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  <attribute name="title" value="VOC (hydrocarbons) at Harwell" />
  <attribute name="summary" value="VOC (hydrocarbons) at Harwell. These measurements are gathered as a part of the following projects ACTRIS, EMEP and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['1-2-3-trimethylbenzene in air (mole_fraction_of_123_trimethylbenzene_in_air)', '1-2-3-trimethylbenzene in air (mass_concentration_of_1-2-3-trimethylbenzene_in_air)', '1-2-4-trimethylbenzene in air (mole_fraction_of_124_trimethylbenzene_in_air)', '1-2-4-trimethylbenzene in air (mass_concentration_of_1-2-4-trimethylbenzene_in_air)', '1-3-5-trimethylbenzene in air (mole_fraction_of_135_trimethylbenzene_in_air)', '1-3-5-trimethylbenzene in air (mass_concentration_of_1-3-5-trimethylbenzene_in_air)', 'n-octane in air (mole_fraction_of_n-octane_in_air)', 'n-octane in air (mole_fraction_of_octane_in_air)', 'trans-2-pentene in air (mass_concentration_of_trans-2-pentene_in_air)', 'trans-2-pentene in air (mole_fraction_of_trans_2_pentene_in_air)']" />
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  <attribute name="doi" value="https://doi.org/10.48597/JUUW-WJWP" />
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  <attribute name="source" value="surface observation" />
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  <attribute name="date_created" value="2014-08-19T12:59:42.027000Z" />
  <attribute name="date_metadata_modified" value="2013-07-31T00:00:00Z" />
  <attribute name="creator_name" value="Steve Telling" />
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  <attribute name="creator_email" value="" />
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  <attribute name="contributor_name" value="Keith Vincent" />
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  <attribute name="publisher_name" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
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  <attribute name="ebas_station_altitude" value="137.0 m" />
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  <attribute name="geospatial_lon_units" value="degrees_east" />
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  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="1" />
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  <dimension name="qc_1_2_4_trimethylbenzene_ug_per_m3_flags" length="1" />
  <dimension name="qc_1_3_5_trimethylbenzene_pmol_per_mol_flags" length="1" />
  <dimension name="qc_1_3_5_trimethylbenzene_ug_per_m3_flags" length="1" />
  <dimension name="qc_n_octane_ng_per_m3_flags" length="1" />
  <dimension name="qc_n_octane_pmol_per_mol_flags" length="1" />
  <dimension name="qc_trans_2_pentene_ng_per_m3_flags" length="1" />
  <dimension name="qc_trans_2_pentene_pmol_per_mol_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2012-01-01T00:30:00Z" />
    <attribute name="time_coverage_end" value="2012-12-31T23:30:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="3600.0" />
    <attribute name="time_coverage_duration" value="P0Y0M365DT23H0M0.000S" />
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    <attribute name="metadata_creation" value="2026-05-18" />
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    <attribute name="long_name" value="time bounds for measurement" />
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    <attribute name="long_name" value="time bounds for ebas metadata intervals" />
  </variable>
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    <attribute name="units" value="pmol/mol" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_framework_name" value="European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value="The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_station_name" value="Harwell" />
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    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
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    <attribute name="ebas_comment" value="Data converted on export from EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.01." />
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  </variable>
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    <attribute name="standard_name" value="mole_fraction_of_124_trimethylbenzene_in_air" />
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    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_1_2_4_trimethylbenzene_pmol_per_mol meta_1_2_4_trimethylbenzene_pmol_per_mol" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2013-07-31T00:00:00.000000Z" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_station_code" value="GB0036R" />
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    <attribute name="ebas_station_name" value="Harwell" />
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    <attribute name="ebas_framework_name" value="European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value="The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="kt@nilu.no" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="units" value="ng/m3" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_statistics" value="arithmetic mean" />
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    <attribute name="actris_variable_preferred_term" value="(2E)-2-pentene mass concentration" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
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  <variable name="qc_trans_2_pentene_pmol_per_mol" shape="qc_trans_2_pentene_pmol_per_mol_flags time" type="int">
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="time" shape="time" type="double">
    <attribute name="long_name" value="time of measurement" />
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    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
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    <attribute name="calendar" value="standard" />
    <attribute name="bounds" value="time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
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    <attribute name="long_name" value="time of ebas metadata intervals" />
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    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
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