<?xml version="1.0" encoding="UTF-8"?>
<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2" location="Not provided because of security concerns.">
  <attribute name="Conventions" value="CF-1.8, ACDD-1.3" />
  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Ground based in situ observations of online_gc at Zürich-Kaserne (CH0010U)" />
  <attribute name="keywords" value="mass_concentration_of_1-3-butadiene_in_air, mass_concentration_of_n-hexane_in_air, mole_fraction_of_propane_in_air, mass_concentration_of_isoprene_in_air, propane, mole_fraction_of_alpha-pinene_in_air, air, butanone, alpha-pinene, n-hexane, mole_fraction_of_2_methylbutane_in_air, mole_fraction_of_butanone_in_air, n-pentane, mole_fraction_of_ethane_in_air, CH0010U, isoheptanes, ethene, mass_concentration_of_butanone_in_air, mole_fraction_of_sum_butenes_in_air, RI-URBANS, m-p-xylene, acetonitrile, methanol, mole_fraction_of_isoprene_in_air, mole_fraction_of_hexane_in_air, limonene, ethanol, mass_concentration_of_ethanal_in_air, mass_concentration_of_ethanol_in_air, propene, toluene, mole_fraction_of_sum_pentenes_in_air, ethanal, mole_fraction_of_13_butadiene_in_air, mole_fraction_of_2_methylpropane_in_air, isoprene, n-butane, butenes, propanone, mass_concentration_of_2-methylbutane_in_air, mole_fraction_of_ethylbenzene_in_air, isohexanes, mass_concentration_of_n-pentane_in_air, mole_fraction_of_propanone_in_air, mole_fraction_of_ethanol_in_air, mole_fraction_of_o-xylene_in_air, ethylbenzene, mole_fraction_of_benzene_in_air, 2-methylbutane, mole_fraction_of_o_xylene_in_air, mole_fraction_of_n-propanol_in_air, mass_concentration_of_propanol_in_air, mole_fraction_of_butane_in_air, 2-methylpropane, mole_fraction_of_ethene_in_air, mass_concentration_of_n-butane_in_air, ethane, mole_fraction_of_ethanal_in_air, mole_fraction_of_ethyne_in_air, mole_fraction_of_m_p_xylene_in_air, Zürich-Kaserne, mole_fraction_of_limonene_in_air, mass_concentration_of_propanone_in_air, 1-3-butadiene, mole_fraction_of_aceto_nitrile_in_air, ethyne, mole_fraction_of_toluene_in_air, o-xylene, mole_fraction_of_m-p-xylene_in_air, benzene, mole_fraction_of_methanol_in_air, mole_fraction_of_pentane_in_air, n-propanol, pentenes, mole_fraction_of_alpha_pinene_in_air, mole_fraction_of_propene_in_air" />
  <attribute name="id" value="CPZA-8CRW.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="RI-URBANS" />
  <attribute name="acknowledgement" value="Request acknowledgement details from data originator" />
  <attribute name="doi" value="https://doi.org/10.48597/CPZA-8CRW" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Matthias Hill, Stefan Reimann, 1-3-butadiene, 2-methylbutane, 2-methylpropane, acetonitrile, alpha-pinene, benzene, butanone, butenes, ethanal, ethane, ethanol, ethene, ethylbenzene, ethyne, isoheptanes, isohexanes, isoprene, limonene, m-p-xylene, methanol, n-butane, n-hexane, n-pentane, n-propanol, o-xylene, pentenes, propane, propanone, propene, toluene - online_gc at Zürich-Kaserne, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/CPZA-8CRW" />
  <attribute name="summary" value="Ground based in situ observations of online_gc at Zürich-Kaserne (CH0010U). These measurements are gathered as a part of the following projects RI-URBANS and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: 1-3-butadiene in air (mass_concentration_of_1-3-butadiene_in_air), 1-3-butadiene in air (mole_fraction_of_13_butadiene_in_air), 1-3-butadiene in air (mass_concentration_of_1-3-butadiene_in_air), 1-3-butadiene in air (mole_fraction_of_13_butadiene_in_air), 1-3-butadiene in air (mass_concentration_of_1-3-butadiene_in_air), 1-3-butadiene in air (mole_fraction_of_13_butadiene_in_air), 2-methylbutane in air (mass_concentration_of_2-methylbutane_in_air), 2-methylbutane in air (mole_fraction_of_2_methylbutane_in_air), 2-methylbutane in air (mass_concentration_of_2-methylbutane_in_air), 2-methylbutane in air (mole_fraction_of_2_methylbutane_in_air), 2-methylbutane in air (mass_concentration_of_2-methylbutane_in_air), 2-methylbutane in air (mole_fraction_of_2_methylbutane_in_air), 2-methylpropane in air (mole_fraction_of_2_methylpropane_in_air), 2-methylpropane in air (mole_fraction_of_2_methylpropane_in_air), 2-methylpropane in air (mole_fraction_of_2_methylpropane_in_air), acetonitrile in air (mole_fraction_of_aceto_nitrile_in_air), acetonitrile in air (mole_fraction_of_aceto_nitrile_in_air), acetonitrile in air (mole_fraction_of_aceto_nitrile_in_air), alpha-pinene in air (mole_fraction_of_alpha-pinene_in_air), alpha-pinene in air (mole_fraction_of_alpha_pinene_in_air), alpha-pinene in air (mole_fraction_of_alpha-pinene_in_air), alpha-pinene in air (mole_fraction_of_alpha_pinene_in_air), alpha-pinene in air (mole_fraction_of_alpha-pinene_in_air), alpha-pinene in air (mole_fraction_of_alpha_pinene_in_air), benzene in air (mole_fraction_of_benzene_in_air), benzene in air (mole_fraction_of_benzene_in_air), benzene in air (mole_fraction_of_benzene_in_air), benzene in air (mole_fraction_of_benzene_in_air), benzene in air (mole_fraction_of_benzene_in_air), benzene in air (mole_fraction_of_benzene_in_air), butanone in air (mole_fraction_of_butanone_in_air), butanone in air (mass_concentration_of_butanone_in_air), butanone in air (mole_fraction_of_butanone_in_air), butanone in air (mass_concentration_of_butanone_in_air), butanone in air (mole_fraction_of_butanone_in_air), butanone in air (mass_concentration_of_butanone_in_air), butenes in air (mole_fraction_of_sum_butenes_in_air), butenes in air (mole_fraction_of_sum_butenes_in_air), butenes in air (mole_fraction_of_sum_butenes_in_air), ethanal in air (mole_fraction_of_ethanal_in_air), ethanal in air (mass_concentration_of_ethanal_in_air), ethanal in air (mole_fraction_of_ethanal_in_air), ethanal in air (mass_concentration_of_ethanal_in_air), ethanal in air (mole_fraction_of_ethanal_in_air), ethanal in air (mass_concentration_of_ethanal_in_air), ethane in air (mole_fraction_of_ethane_in_air), ethane in air (mole_fraction_of_ethane_in_air), ethane in air (mole_fraction_of_ethane_in_air), ethanol in air (mole_fraction_of_ethanol_in_air), ethanol in air (mass_concentration_of_ethanol_in_air), ethanol in air (mole_fraction_of_ethanol_in_air), ethanol in air (mass_concentration_of_ethanol_in_air), ethanol in air (mole_fraction_of_ethanol_in_air), ethanol in air (mass_concentration_of_ethanol_in_air), ethene in air (mole_fraction_of_ethene_in_air), ethene in air (mole_fraction_of_ethene_in_air), ethene in air (mole_fraction_of_ethene_in_air), ethylbenzene in air (mole_fraction_of_ethylbenzene_in_air), ethylbenzene in air (mole_fraction_of_ethylbenzene_in_air), ethylbenzene in air (mole_fraction_of_ethylbenzene_in_air), ethylbenzene in air (mole_fraction_of_ethylbenzene_in_air), ethylbenzene in air (mole_fraction_of_ethylbenzene_in_air), ethylbenzene in air (mole_fraction_of_ethylbenzene_in_air), ethyne in air (mole_fraction_of_ethyne_in_air), ethyne in air (mole_fraction_of_ethyne_in_air), ethyne in air (mole_fraction_of_ethyne_in_air), isoheptanes in air, isoheptanes in air, isoheptanes in air, isohexanes in air, isohexanes in air, isohexanes in air, isoprene in air (mass_concentration_of_isoprene_in_air), isoprene in air (mole_fraction_of_isoprene_in_air), isoprene in air (mass_concentration_of_isoprene_in_air), isoprene in air (mole_fraction_of_isoprene_in_air), isoprene in air (mass_concentration_of_isoprene_in_air), isoprene in air (mole_fraction_of_isoprene_in_air), limonene in air (mole_fraction_of_limonene_in_air), limonene in air (mole_fraction_of_limonene_in_air), limonene in air (mole_fraction_of_limonene_in_air), limonene in air (mole_fraction_of_limonene_in_air), limonene in air (mole_fraction_of_limonene_in_air), limonene in air (mole_fraction_of_limonene_in_air), m-p-xylene in air (mole_fraction_of_m-p-xylene_in_air), m-p-xylene in air (mole_fraction_of_m_p_xylene_in_air), m-p-xylene in air (mole_fraction_of_m-p-xylene_in_air), m-p-xylene in air (mole_fraction_of_m_p_xylene_in_air), m-p-xylene in air (mole_fraction_of_m-p-xylene_in_air), m-p-xylene in air (mole_fraction_of_m_p_xylene_in_air), methanol in air (mole_fraction_of_methanol_in_air), methanol in air (mole_fraction_of_methanol_in_air), methanol in air (mole_fraction_of_methanol_in_air), n-butane in air (mass_concentration_of_n-butane_in_air), n-butane in air (mole_fraction_of_butane_in_air), n-butane in air (mass_concentration_of_n-butane_in_air), n-butane in air (mole_fraction_of_butane_in_air), n-butane in air (mass_concentration_of_n-butane_in_air), n-butane in air (mole_fraction_of_butane_in_air), n-hexane in air (mass_concentration_of_n-hexane_in_air), n-hexane in air (mole_fraction_of_hexane_in_air), n-hexane in air (mass_concentration_of_n-hexane_in_air), n-hexane in air (mole_fraction_of_hexane_in_air), n-hexane in air (mass_concentration_of_n-hexane_in_air), n-hexane in air (mole_fraction_of_hexane_in_air), n-pentane in air (mass_concentration_of_n-pentane_in_air), n-pentane in air (mole_fraction_of_pentane_in_air), n-pentane in air (mass_concentration_of_n-pentane_in_air), n-pentane in air (mole_fraction_of_pentane_in_air), n-pentane in air (mass_concentration_of_n-pentane_in_air), n-pentane in air (mole_fraction_of_pentane_in_air), n-propanol in air (mole_fraction_of_n-propanol_in_air), n-propanol in air (mass_concentration_of_propanol_in_air), n-propanol in air (mole_fraction_of_n-propanol_in_air), n-propanol in air (mass_concentration_of_propanol_in_air), n-propanol in air (mole_fraction_of_n-propanol_in_air), n-propanol in air (mass_concentration_of_propanol_in_air), o-xylene in air (mole_fraction_of_o-xylene_in_air), o-xylene in air (mole_fraction_of_o_xylene_in_air), o-xylene in air (mole_fraction_of_o-xylene_in_air), o-xylene in air (mole_fraction_of_o_xylene_in_air), o-xylene in air (mole_fraction_of_o-xylene_in_air), o-xylene in air (mole_fraction_of_o_xylene_in_air), pentenes in air (mole_fraction_of_sum_pentenes_in_air), pentenes in air (mole_fraction_of_sum_pentenes_in_air), pentenes in air (mole_fraction_of_sum_pentenes_in_air), propane in air (mole_fraction_of_propane_in_air), propane in air (mole_fraction_of_propane_in_air), propane in air (mole_fraction_of_propane_in_air), propanone in air (mole_fraction_of_propanone_in_air), propanone in air (mass_concentration_of_propanone_in_air), propanone in air (mole_fraction_of_propanone_in_air), propanone in air (mass_concentration_of_propanone_in_air), propanone in air (mole_fraction_of_propanone_in_air), propanone in air (mass_concentration_of_propanone_in_air), propene in air (mole_fraction_of_propene_in_air), propene in air (mole_fraction_of_propene_in_air), propene in air (mole_fraction_of_propene_in_air), toluene in air (mole_fraction_of_toluene_in_air), toluene in air (mole_fraction_of_toluene_in_air), toluene in air (mole_fraction_of_toluene_in_air), toluene in air (mole_fraction_of_toluene_in_air), toluene in air (mole_fraction_of_toluene_in_air), toluene in air (mole_fraction_of_toluene_in_air)" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, 8600, Dübendorf, Switzerland" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2023-06-13T12:55:28 UTC" />
  <attribute name="date_metadata_modified" value="2023-06-13T12:55:28 UTC" />
  <attribute name="creator_name" value="Matthias Hill, Stefan Reimann" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="matthias.hill@empa.ch, " />
  <attribute name="creator_institution" value="&quot;Swiss Federal Laboratories for Materials Science and Technology, Air Pollution/Environmental Technology, Empa&quot;, " />
  <attribute name="contributor_name" value="Matthias Hill" />
  <attribute name="contributor_role" value="data submitter" />
  <attribute name="publisher_type" value="institution" />
  <attribute name="publisher_name" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_institution" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_email" value="ebas@nilu.no" />
  <attribute name="publisher_url" value="https://www.nilu.no/" />
  <attribute name="geospatial_bounds" value="POINT Z (47.377586 8.530419 502.5)" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="geospatial_lat_min" type="double" value="47.377586" />
  <attribute name="geospatial_lat_max" type="double" value="47.377586" />
  <attribute name="geospatial_lon_min" type="double" value="8.530419" />
  <attribute name="geospatial_lon_max" type="double" value="8.530419" />
  <attribute name="geospatial_vertical_min" type="double" value="502.5" />
  <attribute name="geospatial_vertical_max" type="double" value="502.5" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="time_coverage_start" value="2022-07-05T07:38:00 UTC" />
  <attribute name="time_coverage_end" value="2022-12-31T22:30:00 UTC" />
  <attribute name="time_coverage_duration" value="P0000-05-26T14:52:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-00T01:00:00" />
  <attribute name="timezone" value="UTC" />
  <attribute name="ebas_data_definition" value="EBAS_1.1" />
  <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="ebas_citation" value="Matthias Hill, Stefan Reimann, 1-3-butadiene, 2-methylbutane, 2-methylpropane, acetonitrile, alpha-pinene, benzene, butanone, butenes, ethanal, ethane, ethanol, ethene, ethylbenzene, ethyne, isoheptanes, isohexanes, isoprene, limonene, m-p-xylene, methanol, n-butane, n-hexane, n-pentane, n-propanol, o-xylene, pentenes, propane, propanone, propene, toluene - online_gc at Zürich-Kaserne, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/CPZA-8CRW" />
  <attribute name="ebas_set_type_code" value="TI" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="CPZA-8CRW.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/CPZA-8CRW" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/CPZA-8CRW" />
  <attribute name="ebas_file_creation" value="2023-12-16T17:13:38.896547 UTC" />
  <attribute name="ebas_export_state" value="2023-04-24T07:27:56.689840 UTC" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="20220705073800" />
  <attribute name="ebas_revision_date" value="20230613125528" />
  <attribute name="ebas_version" value="1" />
  <attribute name="ebas_version_description" value="manually inspected" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="6mo" />
  <attribute name="ebas_resolution_code" value="1h" />
  <attribute name="ebas_sample_duration" value="12mn" />
  <attribute name="ebas_orig_time_res" value="12mn" />
  <attribute name="ebas_station_code" value="CH0010U" />
  <attribute name="ebas_platform_code" value="CH0010S" />
  <attribute name="ebas_station_name" value="Zürich-Kaserne" />
  <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
  <attribute name="ebas_station_land_use" value="Residential" />
  <attribute name="ebas_station_setting" value="Urban and center city" />
  <attribute name="ebas_station_wmo_region" value="6" />
  <attribute name="ebas_station_latitude" value="47.377586" />
  <attribute name="ebas_station_longitude" value="8.530419" />
  <attribute name="ebas_station_altitude" value="409.0 m" />
  <attribute name="ebas_measurement_altitude" value="502.5 m" />
  <attribute name="ebas_measurement_height" value="3.5 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_matrix" value="air" />
  <attribute name="ebas_laboratory_code" value="CH01L" />
  <attribute name="ebas_instrument_type" value="online_gc" />
  <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
  <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
  <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
  <attribute name="ebas_instrument_serial_number" value="cn24502278" />
  <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
  <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
  <attribute name="ebas_calibration_scale" value="NPL" />
  <attribute name="ebas_calibration_standard_id" value="D95441" />
  <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
  <attribute name="ebas_inlet_type" value="Hat or hood" />
  <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
  <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
  <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
  <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
  <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
  <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
  <attribute name="ebas_framework_acronym" value="RI-URBANS" />
  <attribute name="ebas_framework_name" value="RI-URBANS" />
  <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
  <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
  <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
  <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
  <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  <attribute name="_NCProperties" value="version=2,netcdf=4.9.0,hdf5=1.12.2" />
  <attribute name="Metadata_Conventions" value="Unidata Dataset Discovery v1.0" />
  <attribute name="geospatial_lat_units" value="degrees_north" />
  <attribute name="geospatial_lon_units" value="degrees_east" />
  <attribute name="comment" value="{&#xA;    &quot;Data definition&quot;: &quot;EBAS_1.1&quot;,&#xA;    &quot;Data license&quot;: &quot;https://creativecommons.org/licenses/by/4.0/&quot;,&#xA;    &quot;Citation&quot;: &quot;Matthias Hill, Stefan Reimann, 1-3-butadiene, 2-methylbutane, 2-methylpropane, acetonitrile, alpha-pinene, benzene, butanone, butenes, ethanal, ethane, ethanol, ethene, ethylbenzene, ethyne, isoheptanes, isohexanes, isoprene, limonene, m-p-xylene, methanol, n-butane, n-hexane, n-pentane, n-propanol, o-xylene, pentenes, propane, propanone, propene, toluene - online_gc at Zürich-Kaserne, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/CPZA-8CRW&quot;,&#xA;    &quot;Set type code&quot;: &quot;TI&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;CPZA-8CRW.nc&quot;,&#xA;    &quot;Represents DOI&quot;: &quot;https://doi.org/10.48597/CPZA-8CRW&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/CPZA-8CRW&quot;,&#xA;    &quot;File creation&quot;: &quot;2023-12-16T17:13:38.896547 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2023-04-24T07:27:56.689840 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;20220705073800&quot;,&#xA;    &quot;Revision date&quot;: &quot;20230613125528&quot;,&#xA;    &quot;Version&quot;: &quot;1&quot;,&#xA;    &quot;Version description&quot;: &quot;manually inspected&quot;,&#xA;    &quot;Data level&quot;: &quot;2&quot;,&#xA;    &quot;Period code&quot;: &quot;6mo&quot;,&#xA;    &quot;Resolution code&quot;: &quot;1h&quot;,&#xA;    &quot;Sample duration&quot;: &quot;12mn&quot;,&#xA;    &quot;Orig. time res.&quot;: &quot;12mn&quot;,&#xA;    &quot;Station code&quot;: &quot;CH0010U&quot;,&#xA;    &quot;Platform code&quot;: &quot;CH0010S&quot;,&#xA;    &quot;Station name&quot;: &quot;Zürich-Kaserne&quot;,&#xA;    &quot;Station other IDs&quot;: &quot;CH0010A(Airbase)&quot;,&#xA;    &quot;Station land use&quot;: &quot;Residential&quot;,&#xA;    &quot;Station setting&quot;: &quot;Urban and center city&quot;,&#xA;    &quot;Station WMO region&quot;: &quot;6&quot;,&#xA;    &quot;Station latitude&quot;: &quot;47.377586&quot;,&#xA;    &quot;Station longitude&quot;: &quot;8.530419&quot;,&#xA;    &quot;Station altitude&quot;: &quot;409.0 m&quot;,&#xA;    &quot;Measurement altitude&quot;: &quot;502.5 m&quot;,&#xA;    &quot;Measurement height&quot;: &quot;3.5 m&quot;,&#xA;    &quot;Regime&quot;: &quot;IMG&quot;,&#xA;    &quot;Matrix&quot;: &quot;air&quot;,&#xA;    &quot;Laboratory code&quot;: &quot;CH01L&quot;,&#xA;    &quot;Instrument type&quot;: &quot;online_gc&quot;,&#xA;    &quot;Instrument name&quot;: &quot;Agilent_MARKES-GC-FID_cn24502278_ZUE&quot;,&#xA;    &quot;Instrument manufacturer&quot;: &quot;MARKES+MARKES+Agilent&quot;,&#xA;    &quot;Instrument model&quot;: &quot;Air Server+UNITY2+7890A GC/FID&quot;,&#xA;    &quot;Instrument serial number&quot;: &quot;cn24502278&quot;,&#xA;    &quot;Method ref&quot;: &quot;CH01L_MARES_GC_FID_VOCAIR_ZUE&quot;,&#xA;    &quot;Standard method&quot;: &quot;SOP=ACTRIS_VOC_2014&quot;,&#xA;    &quot;Calibration scale&quot;: &quot;NPL&quot;,&#xA;    &quot;Calibration standard ID&quot;: &quot;D95441&quot;,&#xA;    &quot;Secondary standard ID&quot;: &quot;Duebendorf air; RIX-filling;&quot;,&#xA;    &quot;Inlet type&quot;: &quot;Hat or hood&quot;,&#xA;    &quot;Inlet description&quot;: &quot;ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments.&quot;,&#xA;    &quot;Detection limit expl.&quot;: &quot;Determined by integration of a baseline signal multiplied by a factor of 3&quot;,&#xA;    &quot;Measurement uncertainty expl.&quot;: &quot;Includes reproducibility (precision) + systematic errors (accuracy)&quot;,&#xA;    &quot;Zero/negative values code&quot;: &quot;Zero possible&quot;,&#xA;    &quot;Zero/negative values&quot;: &quot;Zero values may appear due to statistical variations at very low concentrations&quot;,&#xA;    &quot;Organization&quot;: &quot;CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland&quot;,&#xA;    &quot;Framework acronym&quot;: &quot;RI-URBANS&quot;,&#xA;    &quot;Framework name&quot;: &quot;RI-URBANS&quot;,&#xA;    &quot;Framework contact name&quot;: &quot;Markus Fiebig&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;Markus.Fiebig@nilu.no&quot;,&#xA;    &quot;Originator&quot;: &quot;Reimann, Stefan, , , , , , , , , &quot;,&#xA;    &quot;Submitter&quot;: &quot;Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland&quot;,&#xA;    &quot;Acknowledgement&quot;: &quot;Request acknowledgement details from data originator&quot;&#xA;}" />
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    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
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    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
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    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.41. Detection limit converted from '2.0 pmol/mol' to '5.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.41." />
  </variable>
  <variable name="1-3-butadiene_ng_per_m3_amean_qc" shape="1-3-butadiene_ng_per_m3_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="1-3-butadiene_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="1-3-butadiene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_13_butadiene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="1-3-butadiene_pmol_per_mol_amean_qc 1-3-butadiene_pmol_per_mol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="1-3-butadiene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="2.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="1-3-butadiene_pmol_per_mol_amean_qc" shape="1-3-butadiene_pmol_per_mol_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="1-3-butadiene_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="1-3-butadiene_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_1-3-butadiene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="1-3-butadiene_ng_per_m3_ExpUnc2s_qc 1-3-butadiene_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="1-3-butadiene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.413." />
  </variable>
  <variable name="1-3-butadiene_ng_per_m3_ExpUnc2s_qc" shape="1-3-butadiene_ng_per_m3_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="1-3-butadiene_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="1-3-butadiene_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_13_butadiene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="1-3-butadiene_pmol_per_mol_ExpUnc2s_qc 1-3-butadiene_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="1-3-butadiene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="1-3-butadiene_pmol_per_mol_ExpUnc2s_qc" shape="1-3-butadiene_pmol_per_mol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="1-3-butadiene_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="1-3-butadiene_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_1-3-butadiene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="1-3-butadiene_ng_per_m3_precision_qc 1-3-butadiene_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="1-3-butadiene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.413." />
  </variable>
  <variable name="1-3-butadiene_ng_per_m3_precision_qc" shape="1-3-butadiene_ng_per_m3_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="1-3-butadiene_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="1-3-butadiene_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_13_butadiene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="1-3-butadiene_pmol_per_mol_precision_qc 1-3-butadiene_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="1-3-butadiene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="1-3-butadiene_pmol_per_mol_precision_qc" shape="1-3-butadiene_pmol_per_mol_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="1-3-butadiene_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="2-methylbutane_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_2-methylbutane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="2-methylbutane_ng_per_m3_amean_qc 2-methylbutane_ng_per_m3_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-methylbutane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="6.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.22. Detection limit converted from '2.0 pmol/mol' to '6.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.22." />
  </variable>
  <variable name="2-methylbutane_ng_per_m3_amean_qc" shape="2-methylbutane_ng_per_m3_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="2-methylbutane_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="2-methylbutane_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2_methylbutane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="2-methylbutane_pmol_per_mol_amean_qc 2-methylbutane_pmol_per_mol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-methylbutane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="2.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="2-methylbutane_pmol_per_mol_amean_qc" shape="2-methylbutane_pmol_per_mol_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="2-methylbutane_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="2-methylbutane_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_2-methylbutane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="2-methylbutane_ng_per_m3_ExpUnc2s_qc 2-methylbutane_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-methylbutane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.219." />
  </variable>
  <variable name="2-methylbutane_ng_per_m3_ExpUnc2s_qc" shape="2-methylbutane_ng_per_m3_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="2-methylbutane_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="2-methylbutane_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2_methylbutane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="2-methylbutane_pmol_per_mol_ExpUnc2s_qc 2-methylbutane_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-methylbutane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="2-methylbutane_pmol_per_mol_ExpUnc2s_qc" shape="2-methylbutane_pmol_per_mol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="2-methylbutane_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="2-methylbutane_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_2-methylbutane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="2-methylbutane_ng_per_m3_precision_qc 2-methylbutane_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-methylbutane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.219." />
  </variable>
  <variable name="2-methylbutane_ng_per_m3_precision_qc" shape="2-methylbutane_ng_per_m3_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="2-methylbutane_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="2-methylbutane_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2_methylbutane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="2-methylbutane_pmol_per_mol_precision_qc 2-methylbutane_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-methylbutane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="2-methylbutane_pmol_per_mol_precision_qc" shape="2-methylbutane_pmol_per_mol_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="2-methylbutane_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="2-methylpropane_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2_methylpropane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="2-methylpropane_amean_qc 2-methylpropane_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-methylpropane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="2.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="2-methylpropane_amean_qc" shape="2-methylpropane_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="2-methylpropane_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="2-methylpropane_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2_methylpropane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="2-methylpropane_ExpUnc2s_qc 2-methylpropane_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-methylpropane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="2-methylpropane_ExpUnc2s_qc" shape="2-methylpropane_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="2-methylpropane_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="2-methylpropane_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2_methylpropane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="2-methylpropane_precision_qc 2-methylpropane_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-methylpropane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="2-methylpropane_precision_qc" shape="2-methylpropane_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="2-methylpropane_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="acetonitrile_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_aceto_nitrile_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="acetonitrile_amean_qc acetonitrile_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="acetonitrile" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="25.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="acetonitrile_amean_qc" shape="acetonitrile_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="acetonitrile_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="acetonitrile_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_aceto_nitrile_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="acetonitrile_ExpUnc2s_qc acetonitrile_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="acetonitrile" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="acetonitrile_ExpUnc2s_qc" shape="acetonitrile_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="acetonitrile_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="acetonitrile_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_aceto_nitrile_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="acetonitrile_precision_qc acetonitrile_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="acetonitrile" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="acetonitrile_precision_qc" shape="acetonitrile_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="acetonitrile_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="alpha-pinene_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_alpha-pinene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="alpha-pinene_ng_per_m3_amean_qc alpha-pinene_ng_per_m3_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="alpha-pinene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="18.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 6.08. Detection limit converted from '3.0 pmol/mol' to '18.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 6.08." />
  </variable>
  <variable name="alpha-pinene_ng_per_m3_amean_qc" shape="alpha-pinene_ng_per_m3_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="alpha-pinene_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="alpha-pinene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_alpha_pinene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="alpha-pinene_pmol_per_mol_amean_qc alpha-pinene_pmol_per_mol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="alpha-pinene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="3.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="alpha-pinene_pmol_per_mol_amean_qc" shape="alpha-pinene_pmol_per_mol_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="alpha-pinene_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="alpha-pinene_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_alpha-pinene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="alpha-pinene_ng_per_m3_ExpUnc2s_qc alpha-pinene_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="alpha-pinene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 6.08." />
  </variable>
  <variable name="alpha-pinene_ng_per_m3_ExpUnc2s_qc" shape="alpha-pinene_ng_per_m3_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="alpha-pinene_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="alpha-pinene_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_alpha_pinene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="alpha-pinene_pmol_per_mol_ExpUnc2s_qc alpha-pinene_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="alpha-pinene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="alpha-pinene_pmol_per_mol_ExpUnc2s_qc" shape="alpha-pinene_pmol_per_mol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="alpha-pinene_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="alpha-pinene_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_alpha-pinene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="alpha-pinene_ng_per_m3_precision_qc alpha-pinene_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="alpha-pinene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 6.08." />
  </variable>
  <variable name="alpha-pinene_ng_per_m3_precision_qc" shape="alpha-pinene_ng_per_m3_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="alpha-pinene_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="alpha-pinene_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_alpha_pinene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="alpha-pinene_pmol_per_mol_precision_qc alpha-pinene_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="alpha-pinene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="alpha-pinene_pmol_per_mol_precision_qc" shape="alpha-pinene_pmol_per_mol_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="alpha-pinene_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="benzene_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_benzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="benzene_ng_per_m3_amean_qc benzene_ng_per_m3_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="benzene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="7.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.49. Detection limit converted from '2.0 pmol/mol' to '7.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.49." />
  </variable>
  <variable name="benzene_ng_per_m3_amean_qc" shape="benzene_ng_per_m3_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="benzene_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="benzene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_benzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="benzene_pmol_per_mol_amean_qc benzene_pmol_per_mol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="benzene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="2.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="benzene_pmol_per_mol_amean_qc" shape="benzene_pmol_per_mol_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="benzene_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="benzene_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_benzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="benzene_ng_per_m3_ExpUnc2s_qc benzene_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="benzene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.485." />
  </variable>
  <variable name="benzene_ng_per_m3_ExpUnc2s_qc" shape="benzene_ng_per_m3_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="benzene_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="benzene_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_benzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="benzene_pmol_per_mol_ExpUnc2s_qc benzene_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="benzene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="benzene_pmol_per_mol_ExpUnc2s_qc" shape="benzene_pmol_per_mol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="benzene_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="benzene_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_benzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="benzene_ng_per_m3_precision_qc benzene_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="benzene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.485." />
  </variable>
  <variable name="benzene_ng_per_m3_precision_qc" shape="benzene_ng_per_m3_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="benzene_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="benzene_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_benzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="benzene_pmol_per_mol_precision_qc benzene_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="benzene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="benzene_pmol_per_mol_precision_qc" shape="benzene_pmol_per_mol_precision_qc_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="benzene_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="butanone_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_butanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="butanone_pmol_per_mol_amean_qc butanone_pmol_per_mol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="butanone" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="8.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003217. Detection limit converted from '8.0 pmol/mol' to '0.0257 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003217. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'pmol/mol', conversion factor 310.841. Detection limit converted from '0.0257 ug/m3' at 273.15 K, 1013.25 hPa to '8.0 pmol/mol', conversion factor 310.841." />
  </variable>
  <variable name="butanone_pmol_per_mol_amean_qc" shape="butanone_pmol_per_mol_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="butanone_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="butanone_ug_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_butanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="butanone_ug_per_m3_amean_qc butanone_ug_per_m3_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="butanone" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="0.0257 ug/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003217. Detection limit converted from '8.0 pmol/mol' to '0.0257 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003217." />
  </variable>
  <variable name="butanone_ug_per_m3_amean_qc" shape="butanone_ug_per_m3_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="butanone_ug_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="butanone_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_butanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="butanone_pmol_per_mol_ExpUnc2s_qc butanone_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="butanone" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00321707. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'pmol/mol', conversion factor 310.84144." />
  </variable>
  <variable name="butanone_pmol_per_mol_ExpUnc2s_qc" shape="butanone_pmol_per_mol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="units" value="1" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="butanone_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="butanone_ug_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_butanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="butanone_ug_per_m3_ExpUnc2s_qc butanone_ug_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="butanone" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00321707." />
  </variable>
  <variable name="butanone_ug_per_m3_ExpUnc2s_qc" shape="butanone_ug_per_m3_ExpUnc2s_qc_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="butanone_ug_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="butanone_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_butanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="butanone_pmol_per_mol_precision_qc butanone_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="butanone" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
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    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00321707. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'pmol/mol', conversion factor 310.84144." />
  </variable>
  <variable name="butanone_pmol_per_mol_precision_qc" shape="butanone_pmol_per_mol_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="butanone_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="butanone_ug_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_butanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="butanone_ug_per_m3_precision_qc butanone_ug_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="butanone" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00321707." />
  </variable>
  <variable name="butanone_ug_per_m3_precision_qc" shape="butanone_ug_per_m3_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="butanone_ug_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="butenes_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_sum_butenes_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="butenes_amean_qc butenes_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="butenes" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="4.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="butenes_amean_qc" shape="butenes_amean_qc_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="butenes_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="butenes_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_sum_butenes_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="butenes_ExpUnc2s_qc butenes_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="butenes" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="butenes_ExpUnc2s_qc" shape="butenes_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="butenes_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="butenes_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_sum_butenes_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="butenes_precision_qc butenes_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="butenes" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="butenes_precision_qc" shape="butenes_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="butenes_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethanal_nmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethanal_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="ethanal_nmol_per_mol_amean_qc ethanal_nmol_per_mol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanal" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="0.024 nmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.001965. Detection limit converted from '24.0 pmol/mol' to '0.0472 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.001965. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.50879. Detection limit converted from '0.0472 ug/m3' at 273.15 K, 1013.25 hPa to '0.024 nmol/mol', conversion factor 0.50879." />
  </variable>
  <variable name="ethanal_nmol_per_mol_amean_qc" shape="ethanal_nmol_per_mol_amean_qc_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="ethanal_nmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethanal_ug_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ethanal_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="ethanal_ug_per_m3_amean_qc ethanal_ug_per_m3_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanal" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="0.0472 ug/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.001965. Detection limit converted from '24.0 pmol/mol' to '0.0472 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.001965." />
  </variable>
  <variable name="ethanal_ug_per_m3_amean_qc" shape="ethanal_ug_per_m3_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="ethanal_ug_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethanal_nmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethanal_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="ethanal_nmol_per_mol_ExpUnc2s_qc ethanal_nmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanal" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
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    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00196544. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.5087909." />
  </variable>
  <variable name="ethanal_nmol_per_mol_ExpUnc2s_qc" shape="ethanal_nmol_per_mol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="ethanal_nmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethanal_ug_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ethanal_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="ethanal_ug_per_m3_ExpUnc2s_qc ethanal_ug_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanal" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
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    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
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    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
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    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
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    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
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    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00196544." />
  </variable>
  <variable name="ethanal_ug_per_m3_ExpUnc2s_qc" shape="ethanal_ug_per_m3_ExpUnc2s_qc_flags time" type="int">
    <attribute name="units" value="1" />
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  <variable name="ethanal_ug_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethanal_nmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethanal_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="ethanal_nmol_per_mol_precision_qc ethanal_nmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanal" />
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    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
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    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
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    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
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    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
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    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
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    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00196544. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.5087909." />
  </variable>
  <variable name="ethanal_nmol_per_mol_precision_qc" shape="ethanal_nmol_per_mol_precision_qc_flags time" type="int">
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    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="ethanal_nmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethanal_ug_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ethanal_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ancillary_variables" value="ethanal_ug_per_m3_precision_qc ethanal_ug_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
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    <attribute name="ebas_version_description" value="manually inspected" />
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    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
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    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
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    <attribute name="ebas_component" value="ethanal" />
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    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00196544." />
  </variable>
  <variable name="ethanal_ug_per_m3_precision_qc" shape="ethanal_ug_per_m3_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="ethanal_ug_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethane_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="ethane_amean_qc ethane_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="13.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="ethane_amean_qc" shape="ethane_amean_qc_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="ethane_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethane_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="ethane_ExpUnc2s_qc ethane_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="ethane_ExpUnc2s_qc" shape="ethane_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="ethane_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethane_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="ethane_precision_qc ethane_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="ethane_precision_qc" shape="ethane_precision_qc_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="ethane_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethanol_nmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="ethanol_nmol_per_mol_amean_qc ethanol_nmol_per_mol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanol" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="0.008 nmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002055. Detection limit converted from '8.0 pmol/mol' to '0.0164 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002055. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.486526. Detection limit converted from '0.0164 ug/m3' at 273.15 K, 1013.25 hPa to '0.008 nmol/mol', conversion factor 0.486526." />
  </variable>
  <variable name="ethanol_nmol_per_mol_amean_qc" shape="ethanol_nmol_per_mol_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="ethanol_nmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethanol_ug_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ethanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="ethanol_ug_per_m3_amean_qc ethanol_ug_per_m3_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanol" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="0.0164 ug/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002055. Detection limit converted from '8.0 pmol/mol' to '0.0164 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002055." />
  </variable>
  <variable name="ethanol_ug_per_m3_amean_qc" shape="ethanol_ug_per_m3_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="units" value="1" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="ethanol_ug_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethanol_nmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="ethanol_nmol_per_mol_ExpUnc2s_qc ethanol_nmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanol" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00205539. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.48652616." />
  </variable>
  <variable name="ethanol_nmol_per_mol_ExpUnc2s_qc" shape="ethanol_nmol_per_mol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="ethanol_nmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethanol_ug_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ethanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="ethanol_ug_per_m3_ExpUnc2s_qc ethanol_ug_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanol" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00205539." />
  </variable>
  <variable name="ethanol_ug_per_m3_ExpUnc2s_qc" shape="ethanol_ug_per_m3_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="ethanol_ug_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethanol_nmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="ethanol_nmol_per_mol_precision_qc ethanol_nmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanol" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00205539. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.48652616." />
  </variable>
  <variable name="ethanol_nmol_per_mol_precision_qc" shape="ethanol_nmol_per_mol_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="ethanol_nmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethanol_ug_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ethanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="ethanol_ug_per_m3_precision_qc ethanol_ug_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanol" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00205539." />
  </variable>
  <variable name="ethanol_ug_per_m3_precision_qc" shape="ethanol_ug_per_m3_precision_qc_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="ethanol_ug_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethene_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="ethene_amean_qc ethene_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="6.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="ethene_amean_qc" shape="ethene_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="units" value="1" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="ethene_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethene_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="ethene_ExpUnc2s_qc ethene_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="ethene_ExpUnc2s_qc" shape="ethene_ExpUnc2s_qc_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="ethene_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethene_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="ethene_precision_qc ethene_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="ethene_precision_qc" shape="ethene_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="ethene_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethylbenzene_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethylbenzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="ethylbenzene_ng_per_m3_amean_qc ethylbenzene_ng_per_m3_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethylbenzene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="14.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.74. Detection limit converted from '3.0 pmol/mol' to '14.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.74." />
  </variable>
  <variable name="ethylbenzene_ng_per_m3_amean_qc" shape="ethylbenzene_ng_per_m3_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="ethylbenzene_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethylbenzene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethylbenzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="ethylbenzene_pmol_per_mol_amean_qc ethylbenzene_pmol_per_mol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethylbenzene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="3.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="ethylbenzene_pmol_per_mol_amean_qc" shape="ethylbenzene_pmol_per_mol_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="ethylbenzene_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethylbenzene_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethylbenzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="ethylbenzene_ng_per_m3_ExpUnc2s_qc ethylbenzene_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethylbenzene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.737." />
  </variable>
  <variable name="ethylbenzene_ng_per_m3_ExpUnc2s_qc" shape="ethylbenzene_ng_per_m3_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="ethylbenzene_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethylbenzene_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethylbenzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="ethylbenzene_pmol_per_mol_ExpUnc2s_qc ethylbenzene_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethylbenzene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="ethylbenzene_pmol_per_mol_ExpUnc2s_qc" shape="ethylbenzene_pmol_per_mol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="ethylbenzene_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethylbenzene_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethylbenzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="ethylbenzene_ng_per_m3_precision_qc ethylbenzene_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethylbenzene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.737." />
  </variable>
  <variable name="ethylbenzene_ng_per_m3_precision_qc" shape="ethylbenzene_ng_per_m3_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="ethylbenzene_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethylbenzene_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethylbenzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="ethylbenzene_pmol_per_mol_precision_qc ethylbenzene_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethylbenzene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="ethylbenzene_pmol_per_mol_precision_qc" shape="ethylbenzene_pmol_per_mol_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="ethylbenzene_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethyne_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethyne_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="ethyne_amean_qc ethyne_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethyne" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="4.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="ethyne_amean_qc" shape="ethyne_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="ethyne_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethyne_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethyne_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="ethyne_ExpUnc2s_qc ethyne_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethyne" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="ethyne_ExpUnc2s_qc" shape="ethyne_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="ethyne_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ethyne_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethyne_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="ethyne_precision_qc ethyne_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethyne" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="ethyne_precision_qc" shape="ethyne_precision_qc_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="ethyne_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="isoheptanes_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="isoheptanes_amean_qc isoheptanes_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="isoheptanes" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="4.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="isoheptanes_amean_qc" shape="isoheptanes_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="isoheptanes_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="isoheptanes_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="isoheptanes_ExpUnc2s_qc isoheptanes_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="isoheptanes" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="isoheptanes_ExpUnc2s_qc" shape="isoheptanes_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="isoheptanes_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="isoheptanes_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="isoheptanes_precision_qc isoheptanes_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="isoheptanes" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="isoheptanes_precision_qc" shape="isoheptanes_precision_qc_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="isoheptanes_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="isohexanes_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="isohexanes_amean_qc isohexanes_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="isohexanes" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="5.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="isohexanes_amean_qc" shape="isohexanes_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="isohexanes_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="isohexanes_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="isohexanes_ExpUnc2s_qc isohexanes_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="isohexanes" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="isohexanes_ExpUnc2s_qc" shape="isohexanes_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="isohexanes_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="isohexanes_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="isohexanes_precision_qc isohexanes_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="isohexanes" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="isohexanes_precision_qc" shape="isohexanes_precision_qc_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="isohexanes_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="isoprene_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_isoprene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="isoprene_ng_per_m3_amean_qc isoprene_ng_per_m3_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="isoprene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="6.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.04. Detection limit converted from '2.0 pmol/mol' to '6.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.04." />
  </variable>
  <variable name="isoprene_ng_per_m3_amean_qc" shape="isoprene_ng_per_m3_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="isoprene_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="isoprene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_isoprene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="isoprene_pmol_per_mol_amean_qc isoprene_pmol_per_mol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="isoprene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="2.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="isoprene_pmol_per_mol_amean_qc" shape="isoprene_pmol_per_mol_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="isoprene_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="isoprene_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_isoprene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="isoprene_ng_per_m3_ExpUnc2s_qc isoprene_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="isoprene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.039." />
  </variable>
  <variable name="isoprene_ng_per_m3_ExpUnc2s_qc" shape="isoprene_ng_per_m3_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="isoprene_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="isoprene_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_isoprene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="isoprene_pmol_per_mol_ExpUnc2s_qc isoprene_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="isoprene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="isoprene_pmol_per_mol_ExpUnc2s_qc" shape="isoprene_pmol_per_mol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="isoprene_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="isoprene_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_isoprene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="isoprene_ng_per_m3_precision_qc isoprene_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="isoprene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.039." />
  </variable>
  <variable name="isoprene_ng_per_m3_precision_qc" shape="isoprene_ng_per_m3_precision_qc_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="isoprene_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="isoprene_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_isoprene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="isoprene_pmol_per_mol_precision_qc isoprene_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="isoprene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="isoprene_pmol_per_mol_precision_qc" shape="isoprene_pmol_per_mol_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="isoprene_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="limonene_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_limonene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="limonene_ng_per_m3_amean_qc limonene_ng_per_m3_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="limonene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="18.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 6.08. Detection limit converted from '3.0 pmol/mol' to '18.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 6.08." />
  </variable>
  <variable name="limonene_ng_per_m3_amean_qc" shape="limonene_ng_per_m3_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="limonene_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="limonene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_limonene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="limonene_pmol_per_mol_amean_qc limonene_pmol_per_mol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="limonene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="3.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="limonene_pmol_per_mol_amean_qc" shape="limonene_pmol_per_mol_amean_qc_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="limonene_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="limonene_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_limonene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="limonene_ng_per_m3_ExpUnc2s_qc limonene_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="limonene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 6.08." />
  </variable>
  <variable name="limonene_ng_per_m3_ExpUnc2s_qc" shape="limonene_ng_per_m3_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="limonene_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="limonene_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_limonene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="limonene_pmol_per_mol_ExpUnc2s_qc limonene_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="limonene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="limonene_pmol_per_mol_ExpUnc2s_qc" shape="limonene_pmol_per_mol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="limonene_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="limonene_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_limonene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="limonene_ng_per_m3_precision_qc limonene_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="limonene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 6.08." />
  </variable>
  <variable name="limonene_ng_per_m3_precision_qc" shape="limonene_ng_per_m3_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="limonene_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="limonene_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_limonene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="limonene_pmol_per_mol_precision_qc limonene_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="limonene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="limonene_pmol_per_mol_precision_qc" shape="limonene_pmol_per_mol_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="limonene_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="m-p-xylene_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_m-p-xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="m-p-xylene_ng_per_m3_amean_qc m-p-xylene_ng_per_m3_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="m-p-xylene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="19.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.74. Detection limit converted from '4.0 pmol/mol' to '19.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.74." />
  </variable>
  <variable name="m-p-xylene_ng_per_m3_amean_qc" shape="m-p-xylene_ng_per_m3_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="m-p-xylene_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="m-p-xylene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_m_p_xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="m-p-xylene_pmol_per_mol_amean_qc m-p-xylene_pmol_per_mol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="m-p-xylene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="4.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="m-p-xylene_pmol_per_mol_amean_qc" shape="m-p-xylene_pmol_per_mol_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="m-p-xylene_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="m-p-xylene_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_m-p-xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="m-p-xylene_ng_per_m3_ExpUnc2s_qc m-p-xylene_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="m-p-xylene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.737." />
  </variable>
  <variable name="m-p-xylene_ng_per_m3_ExpUnc2s_qc" shape="m-p-xylene_ng_per_m3_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="m-p-xylene_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="m-p-xylene_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_m_p_xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="m-p-xylene_pmol_per_mol_ExpUnc2s_qc m-p-xylene_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="m-p-xylene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="m-p-xylene_pmol_per_mol_ExpUnc2s_qc" shape="m-p-xylene_pmol_per_mol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="m-p-xylene_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="m-p-xylene_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_m-p-xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="m-p-xylene_ng_per_m3_precision_qc m-p-xylene_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="m-p-xylene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.737." />
  </variable>
  <variable name="m-p-xylene_ng_per_m3_precision_qc" shape="m-p-xylene_ng_per_m3_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="m-p-xylene_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="m-p-xylene_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_m_p_xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="m-p-xylene_pmol_per_mol_precision_qc m-p-xylene_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="m-p-xylene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="m-p-xylene_pmol_per_mol_precision_qc" shape="m-p-xylene_pmol_per_mol_precision_qc_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="m-p-xylene_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="methanol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_methanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="methanol_amean_qc methanol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="methanol" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="25.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="methanol_amean_qc" shape="methanol_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="methanol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="methanol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_methanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="methanol_ExpUnc2s_qc methanol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="methanol" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="methanol_ExpUnc2s_qc" shape="methanol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="methanol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="methanol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_methanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="methanol_precision_qc methanol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="methanol" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="methanol_precision_qc" shape="methanol_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="methanol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-butane_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-butane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="n-butane_ng_per_m3_amean_qc n-butane_ng_per_m3_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-butane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="5.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.59. Detection limit converted from '2.0 pmol/mol' to '5.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.59." />
  </variable>
  <variable name="n-butane_ng_per_m3_amean_qc" shape="n-butane_ng_per_m3_amean_qc_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-butane_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-butane_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_butane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="n-butane_pmol_per_mol_amean_qc n-butane_pmol_per_mol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-butane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="2.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="n-butane_pmol_per_mol_amean_qc" shape="n-butane_pmol_per_mol_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-butane_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-butane_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-butane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="n-butane_ng_per_m3_ExpUnc2s_qc n-butane_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-butane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.593." />
  </variable>
  <variable name="n-butane_ng_per_m3_ExpUnc2s_qc" shape="n-butane_ng_per_m3_ExpUnc2s_qc_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-butane_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-butane_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_butane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="n-butane_pmol_per_mol_ExpUnc2s_qc n-butane_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-butane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="n-butane_pmol_per_mol_ExpUnc2s_qc" shape="n-butane_pmol_per_mol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-butane_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-butane_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-butane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="n-butane_ng_per_m3_precision_qc n-butane_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-butane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.593." />
  </variable>
  <variable name="n-butane_ng_per_m3_precision_qc" shape="n-butane_ng_per_m3_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-butane_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-butane_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_butane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="n-butane_pmol_per_mol_precision_qc n-butane_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-butane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="n-butane_pmol_per_mol_precision_qc" shape="n-butane_pmol_per_mol_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-butane_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-hexane_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-hexane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="n-hexane_ng_per_m3_amean_qc n-hexane_ng_per_m3_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-hexane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="8.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.84. Detection limit converted from '2.0 pmol/mol' to '8.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.84." />
  </variable>
  <variable name="n-hexane_ng_per_m3_amean_qc" shape="n-hexane_ng_per_m3_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-hexane_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-hexane_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_hexane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="n-hexane_pmol_per_mol_amean_qc n-hexane_pmol_per_mol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-hexane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="2.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="n-hexane_pmol_per_mol_amean_qc" shape="n-hexane_pmol_per_mol_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-hexane_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-hexane_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-hexane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="n-hexane_ng_per_m3_ExpUnc2s_qc n-hexane_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-hexane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.845." />
  </variable>
  <variable name="n-hexane_ng_per_m3_ExpUnc2s_qc" shape="n-hexane_ng_per_m3_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-hexane_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-hexane_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_hexane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="n-hexane_pmol_per_mol_ExpUnc2s_qc n-hexane_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-hexane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="n-hexane_pmol_per_mol_ExpUnc2s_qc" shape="n-hexane_pmol_per_mol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-hexane_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-hexane_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-hexane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="n-hexane_ng_per_m3_precision_qc n-hexane_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-hexane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.845." />
  </variable>
  <variable name="n-hexane_ng_per_m3_precision_qc" shape="n-hexane_ng_per_m3_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-hexane_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-hexane_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_hexane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="n-hexane_pmol_per_mol_precision_qc n-hexane_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-hexane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="n-hexane_pmol_per_mol_precision_qc" shape="n-hexane_pmol_per_mol_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-hexane_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-pentane_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-pentane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="n-pentane_ng_per_m3_amean_qc n-pentane_ng_per_m3_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-pentane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="6.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.22. Detection limit converted from '2.0 pmol/mol' to '6.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.22." />
  </variable>
  <variable name="n-pentane_ng_per_m3_amean_qc" shape="n-pentane_ng_per_m3_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-pentane_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-pentane_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_pentane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="n-pentane_pmol_per_mol_amean_qc n-pentane_pmol_per_mol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-pentane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="2.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="n-pentane_pmol_per_mol_amean_qc" shape="n-pentane_pmol_per_mol_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-pentane_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-pentane_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-pentane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="n-pentane_ng_per_m3_ExpUnc2s_qc n-pentane_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-pentane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.219." />
  </variable>
  <variable name="n-pentane_ng_per_m3_ExpUnc2s_qc" shape="n-pentane_ng_per_m3_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-pentane_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-pentane_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_pentane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="n-pentane_pmol_per_mol_ExpUnc2s_qc n-pentane_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-pentane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="n-pentane_pmol_per_mol_ExpUnc2s_qc" shape="n-pentane_pmol_per_mol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-pentane_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-pentane_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-pentane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="n-pentane_ng_per_m3_precision_qc n-pentane_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-pentane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.219." />
  </variable>
  <variable name="n-pentane_ng_per_m3_precision_qc" shape="n-pentane_ng_per_m3_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="n-pentane_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-pentane_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_pentane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="n-pentane_pmol_per_mol_precision_qc n-pentane_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-pentane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="n-pentane_pmol_per_mol_precision_qc" shape="n-pentane_pmol_per_mol_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-pentane_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-propanol_nmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_n-propanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="n-propanol_nmol_per_mol_amean_qc n-propanol_nmol_per_mol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-propanol" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="0.005 nmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002681. Detection limit converted from '5.0 pmol/mol' to '0.0134 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002681. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.372967. Detection limit converted from '0.0134 ug/m3' at 273.15 K, 1013.25 hPa to '0.005 nmol/mol', conversion factor 0.372967." />
  </variable>
  <variable name="n-propanol_nmol_per_mol_amean_qc" shape="n-propanol_nmol_per_mol_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-propanol_nmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-propanol_ug_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_propanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="n-propanol_ug_per_m3_amean_qc n-propanol_ug_per_m3_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-propanol" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="0.0134 ug/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002681. Detection limit converted from '5.0 pmol/mol' to '0.0134 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002681." />
  </variable>
  <variable name="n-propanol_ug_per_m3_amean_qc" shape="n-propanol_ug_per_m3_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-propanol_ug_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-propanol_nmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_n-propanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="n-propanol_nmol_per_mol_ExpUnc2s_qc n-propanol_nmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-propanol" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00268120. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.37296690." />
  </variable>
  <variable name="n-propanol_nmol_per_mol_ExpUnc2s_qc" shape="n-propanol_nmol_per_mol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-propanol_nmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-propanol_ug_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_propanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="n-propanol_ug_per_m3_ExpUnc2s_qc n-propanol_ug_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-propanol" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00268120." />
  </variable>
  <variable name="n-propanol_ug_per_m3_ExpUnc2s_qc" shape="n-propanol_ug_per_m3_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-propanol_ug_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-propanol_nmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_n-propanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="n-propanol_nmol_per_mol_precision_qc n-propanol_nmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-propanol" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00268120. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.37296690." />
  </variable>
  <variable name="n-propanol_nmol_per_mol_precision_qc" shape="n-propanol_nmol_per_mol_precision_qc_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-propanol_nmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-propanol_ug_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_propanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="n-propanol_ug_per_m3_precision_qc n-propanol_ug_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-propanol" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00268120." />
  </variable>
  <variable name="n-propanol_ug_per_m3_precision_qc" shape="n-propanol_ug_per_m3_precision_qc_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="n-propanol_ug_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="o-xylene_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_o-xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="o-xylene_ng_per_m3_amean_qc o-xylene_ng_per_m3_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="o-xylene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="14.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.74. Detection limit converted from '3.0 pmol/mol' to '14.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.74." />
  </variable>
  <variable name="o-xylene_ng_per_m3_amean_qc" shape="o-xylene_ng_per_m3_amean_qc_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="o-xylene_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="o-xylene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_o_xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="o-xylene_pmol_per_mol_amean_qc o-xylene_pmol_per_mol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="o-xylene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="3.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="o-xylene_pmol_per_mol_amean_qc" shape="o-xylene_pmol_per_mol_amean_qc_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="o-xylene_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="o-xylene_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_o-xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="o-xylene_ng_per_m3_ExpUnc2s_qc o-xylene_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="o-xylene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.737." />
  </variable>
  <variable name="o-xylene_ng_per_m3_ExpUnc2s_qc" shape="o-xylene_ng_per_m3_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="o-xylene_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="o-xylene_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_o_xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="o-xylene_pmol_per_mol_ExpUnc2s_qc o-xylene_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="o-xylene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="o-xylene_pmol_per_mol_ExpUnc2s_qc" shape="o-xylene_pmol_per_mol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="o-xylene_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="o-xylene_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_o-xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="o-xylene_ng_per_m3_precision_qc o-xylene_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="o-xylene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.737." />
  </variable>
  <variable name="o-xylene_ng_per_m3_precision_qc" shape="o-xylene_ng_per_m3_precision_qc_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="o-xylene_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="o-xylene_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_o_xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="o-xylene_pmol_per_mol_precision_qc o-xylene_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="o-xylene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="o-xylene_pmol_per_mol_precision_qc" shape="o-xylene_pmol_per_mol_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="o-xylene_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="pentenes_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_sum_pentenes_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="pentenes_amean_qc pentenes_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="pentenes" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="4.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="pentenes_amean_qc" shape="pentenes_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="pentenes_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="pentenes_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_sum_pentenes_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="pentenes_ExpUnc2s_qc pentenes_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="pentenes" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="pentenes_ExpUnc2s_qc" shape="pentenes_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="pentenes_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="pentenes_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_sum_pentenes_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="pentenes_precision_qc pentenes_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="pentenes" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="pentenes_precision_qc" shape="pentenes_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="pentenes_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="propane_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_propane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="propane_amean_qc propane_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="6.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="propane_amean_qc" shape="propane_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="propane_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="propane_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_propane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="propane_ExpUnc2s_qc propane_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="propane_ExpUnc2s_qc" shape="propane_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="propane_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="propane_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_propane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="propane_precision_qc propane_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="propane_precision_qc" shape="propane_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="propane_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="propanone_nmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_propanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="propanone_nmol_per_mol_amean_qc propanone_nmol_per_mol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propanone" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="0.008 nmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002591. Detection limit converted from '8.0 pmol/mol' to '0.0207 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002591. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.385913. Detection limit converted from '0.0207 ug/m3' at 273.15 K, 1013.25 hPa to '0.008 nmol/mol', conversion factor 0.385913." />
  </variable>
  <variable name="propanone_nmol_per_mol_amean_qc" shape="propanone_nmol_per_mol_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="propanone_nmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="propanone_ug_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_propanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="propanone_ug_per_m3_amean_qc propanone_ug_per_m3_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propanone" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="0.0207 ug/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002591. Detection limit converted from '8.0 pmol/mol' to '0.0207 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002591." />
  </variable>
  <variable name="propanone_ug_per_m3_amean_qc" shape="propanone_ug_per_m3_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="propanone_ug_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="propanone_nmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_propanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="propanone_nmol_per_mol_ExpUnc2s_qc propanone_nmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propanone" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00259126. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.38591277." />
  </variable>
  <variable name="propanone_nmol_per_mol_ExpUnc2s_qc" shape="propanone_nmol_per_mol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="propanone_nmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="propanone_ug_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_propanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="propanone_ug_per_m3_ExpUnc2s_qc propanone_ug_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propanone" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00259126." />
  </variable>
  <variable name="propanone_ug_per_m3_ExpUnc2s_qc" shape="propanone_ug_per_m3_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="propanone_ug_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="propanone_nmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_propanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="propanone_nmol_per_mol_precision_qc propanone_nmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propanone" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00259126. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.38591277." />
  </variable>
  <variable name="propanone_nmol_per_mol_precision_qc" shape="propanone_nmol_per_mol_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="propanone_nmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="propanone_ug_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_propanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="propanone_ug_per_m3_precision_qc propanone_ug_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propanone" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00259126." />
  </variable>
  <variable name="propanone_ug_per_m3_precision_qc" shape="propanone_ug_per_m3_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="propanone_ug_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="propene_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_propene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="propene_amean_qc propene_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="3.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="propene_amean_qc" shape="propene_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="propene_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="propene_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_propene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="propene_ExpUnc2s_qc propene_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="propene_ExpUnc2s_qc" shape="propene_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="propene_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="propene_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_propene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="propene_precision_qc propene_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="propene_precision_qc" shape="propene_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="propene_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="toluene_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_toluene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="toluene_ng_per_m3_amean_qc toluene_ng_per_m3_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="toluene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="16.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.11. Detection limit converted from '4.0 pmol/mol' to '16.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.11." />
  </variable>
  <variable name="toluene_ng_per_m3_amean_qc" shape="toluene_ng_per_m3_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="toluene_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="toluene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_toluene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="toluene_pmol_per_mol_amean_qc toluene_pmol_per_mol_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="toluene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit" value="4.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="toluene_pmol_per_mol_amean_qc" shape="toluene_pmol_per_mol_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="toluene_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="toluene_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_toluene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="toluene_ng_per_m3_ExpUnc2s_qc toluene_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="toluene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.111." />
  </variable>
  <variable name="toluene_ng_per_m3_ExpUnc2s_qc" shape="toluene_ng_per_m3_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="toluene_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="toluene_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_toluene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="toluene_pmol_per_mol_ExpUnc2s_qc toluene_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="toluene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="toluene_pmol_per_mol_ExpUnc2s_qc" shape="toluene_pmol_per_mol_ExpUnc2s_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="toluene_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="toluene_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_toluene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="toluene_ng_per_m3_precision_qc toluene_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="toluene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.111." />
  </variable>
  <variable name="toluene_ng_per_m3_precision_qc" shape="toluene_ng_per_m3_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="toluene_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="toluene_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_toluene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="toluene_pmol_per_mol_precision_qc toluene_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20230613125528" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12mn" />
    <attribute name="ebas_orig_time_res" value="12mn" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="47.377586" />
    <attribute name="ebas_station_longitude" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="toluene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+7890A GC/FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling;" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="RI-URBANS" />
    <attribute name="ebas_framework_name" value="RI-URBANS" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Reimann, Stefan, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Hill, Matthias, matthias.hill@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, Empa, Air Pollution/Environmental Technology, Ueberlandstrasse 129, , CH-8600, Duebendorf, Switzerland" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
  </variable>
  <variable name="toluene_pmol_per_mol_precision_qc" shape="toluene_pmol_per_mol_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="toluene_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="time" shape="time" type="double">
    <attribute name="long_name" value="time of measurement" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01 00:00:00 UTC" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="gregorian" />
    <attribute name="bounds" value="time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="metadata_time" shape="metadata_time" type="double">
    <attribute name="long_name" value="time of ebas metadata intervals" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01 00:00:00 UTC" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="gregorian" />
    <attribute name="bounds" value="metadata_time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
</netcdf>
