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  <attribute name="Conventions" value="CF-1.8, ACDD-1.3" />
  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Particle_number_concentration at Bondville" />
  <attribute name="keywords" value="aerosol, number_concentration_of_particles_in_dry_aerosol_particles_in_air, NOAA-ESRL, particle_number_concentration, GAW-WDCA, Bondville, US0035R" />
  <attribute name="id" value="US0035R.20250101000000.20260608125053.cpc...1y.1h.US06L_TSI_3760_BND.US06L_cpc_ref.lev2.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="GAW-WDCA, NOAA-ESRL" />
  <attribute name="acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
  <attribute name="doi" value="https://doi.org/10.48597/CXG3-NA98" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Andrews, B., GAW-WDCA, NOAA-ESRL, 2026, Particle_number_concentration at Bondville, data hosted by EBAS at NILU, Part of DOI: https://doi.org/10.48597/CXG3-NA98" />
  <attribute name="summary" value="Particle_number_concentration at Bondville. These measurements are gathered as a part of the following projects GAW-WDCA, NOAA-ESRL and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: particle_number_concentration in aerosol (number_concentration_of_particles_in_dry_aerosol_particles_in_air), particle_number_concentration in aerosol (number_concentration_of_particles_in_dry_aerosol_particles_in_air), particle_number_concentration in aerosol (number_concentration_of_particles_in_dry_aerosol_particles_in_air)" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="US06L, National Oceanic and Atmospheric Administration, NOAA/GML, Global Monitoring Laboratory, 325 Broadway, CO 80305-3, Boulder, U.S.A." />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2026-06-08T12:50:53 UTC" />
  <attribute name="date_metadata_modified" value="2026-06-08T12:50:53 UTC" />
  <attribute name="creator_name" value="Betsy Andrews" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="betsy.andrews@noaa.gov" />
  <attribute name="creator_institution" value="&quot;National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD&quot;" />
  <attribute name="contributor_name" value="Betsy Andrews" />
  <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 (40.0499992371 -88.3666687012 213.0)" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="geospatial_lat_min" type="double" value="40.0499992371" />
  <attribute name="geospatial_lat_max" type="double" value="40.0499992371" />
  <attribute name="geospatial_lon_min" type="double" value="-88.3666687012" />
  <attribute name="geospatial_lon_max" type="double" value="-88.3666687012" />
  <attribute name="geospatial_vertical_min" type="double" value="213.0" />
  <attribute name="geospatial_vertical_max" type="double" value="213.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="time_coverage_start" value="2025-01-01T00:00:00 UTC" />
  <attribute name="time_coverage_end" value="2026-01-01T00:00:00 UTC" />
  <attribute name="time_coverage_duration" value="P0001-00-00T00:00:00" />
  <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="Andrews, B., GAW-WDCA, NOAA-ESRL, 2026, Particle_number_concentration at Bondville, data hosted by EBAS at NILU, Part of DOI: https://doi.org/10.48597/CXG3-NA98" />
  <attribute name="ebas_set_type_code" value="TU" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="US0035R.20250101000000.20260608125053.cpc...1y.1h.US06L_TSI_3760_BND.US06L_cpc_ref.lev2.nc" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/CXG3-NA98" />
  <attribute name="ebas_file_creation" value="2026-06-08T16:48:47.310535 UTC" />
  <attribute name="ebas_export_state" value="2026-06-08T14:25:03.051841 UTC" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="20250101000000" />
  <attribute name="ebas_revision_date" value="20260608125053" />
  <attribute name="ebas_version" value="1" />
  <attribute name="ebas_version_description" value="Version numbering not tracked, generated by Forge 1.0.6 and EBAS-IO V.4.04.00" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="1y" />
  <attribute name="ebas_resolution_code" value="1h" />
  <attribute name="ebas_sample_duration" value="1h" />
  <attribute name="ebas_station_code" value="US0035R" />
  <attribute name="ebas_platform_code" value="US0035S" />
  <attribute name="ebas_station_name" value="Bondville" />
  <attribute name="ebas_station_latitude" value="40.05" />
  <attribute name="ebas_station_longitude" value="-88.36667" />
  <attribute name="ebas_station_altitude" value="213.0 m" />
  <attribute name="ebas_measurement_latitude" value="40.0499992371" />
  <attribute name="ebas_measurement_longitude" value="-88.3666687012" />
  <attribute name="ebas_measurement_altitude" value="213.0 m" />
  <attribute name="ebas_measurement_height" value="10.0 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_laboratory_code" value="US06L" />
  <attribute name="ebas_instrument_type" value="cpc" />
  <attribute name="ebas_instrument_name" value="TSI_3760_BND" />
  <attribute name="ebas_instrument_manufacturer" value="TSI" />
  <attribute name="ebas_instrument_model" value="3760" />
  <attribute name="ebas_instrument_serial_number" value="141" />
  <attribute name="ebas_method_ref" value="US06L_cpc_ref" />
  <attribute name="ebas_standard_method" value="None" />
  <attribute name="ebas_inlet_type" value="Hat or hood" />
  <attribute name="ebas_volume_std_temperature" value="273.15 K" />
  <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
  <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="US06L, National Oceanic and Atmospheric Administration, NOAA/GML, Global Monitoring Laboratory, 325 Broadway, , CO 80305-3, Boulder, U.S.A." />
  <attribute name="ebas_framework_acronym" value="GAW-WDCA, NOAA-ESRL" />
  <attribute name="ebas_framework_name" value="World Data Centre for Aerosols, " />
  <attribute name="ebas_framework_description" value="The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme., " />
  <attribute name="ebas_framework_contact_name" value="Markus Fiebig, Markus Fiebig" />
  <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no" />
  <attribute name="ebas_originator" value="Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;Boulder, CO&quot;, USA" />
  <attribute name="ebas_submitter" value="Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;Boulder, CO&quot;, USA" />
  <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
  <attribute name="_NCProperties" value="version=2,netcdf=4.9.1,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;Andrews, B., GAW-WDCA, NOAA-ESRL, 2026, Particle_number_concentration at Bondville, data hosted by EBAS at NILU, Part of DOI: https://doi.org/10.48597/CXG3-NA98&quot;,&#xA;    &quot;Set type code&quot;: &quot;TU&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;US0035R.20250101000000.20260608125053.cpc...1y.1h.US06L_TSI_3760_BND.US06L_cpc_ref.lev2.nc&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/CXG3-NA98&quot;,&#xA;    &quot;File creation&quot;: &quot;2026-06-08T16:48:47.310535 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2026-06-08T14:25:03.051841 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;20250101000000&quot;,&#xA;    &quot;Revision date&quot;: &quot;20260608125053&quot;,&#xA;    &quot;Version&quot;: &quot;1&quot;,&#xA;    &quot;Version description&quot;: &quot;Version numbering not tracked, generated by Forge 1.0.6 and EBAS-IO V.4.04.00&quot;,&#xA;    &quot;Data level&quot;: &quot;2&quot;,&#xA;    &quot;Period code&quot;: &quot;1y&quot;,&#xA;    &quot;Resolution code&quot;: &quot;1h&quot;,&#xA;    &quot;Sample duration&quot;: &quot;1h&quot;,&#xA;    &quot;Station code&quot;: &quot;US0035R&quot;,&#xA;    &quot;Platform code&quot;: &quot;US0035S&quot;,&#xA;    &quot;Station name&quot;: &quot;Bondville&quot;,&#xA;    &quot;Station latitude&quot;: &quot;40.05&quot;,&#xA;    &quot;Station longitude&quot;: &quot;-88.36667&quot;,&#xA;    &quot;Station altitude&quot;: &quot;213.0 m&quot;,&#xA;    &quot;Measurement latitude&quot;: &quot;40.0499992371&quot;,&#xA;    &quot;Measurement longitude&quot;: &quot;-88.3666687012&quot;,&#xA;    &quot;Measurement altitude&quot;: &quot;213.0 m&quot;,&#xA;    &quot;Measurement height&quot;: &quot;10.0 m&quot;,&#xA;    &quot;Regime&quot;: &quot;IMG&quot;,&#xA;    &quot;Laboratory code&quot;: &quot;US06L&quot;,&#xA;    &quot;Instrument type&quot;: &quot;cpc&quot;,&#xA;    &quot;Instrument name&quot;: &quot;TSI_3760_BND&quot;,&#xA;    &quot;Instrument manufacturer&quot;: &quot;TSI&quot;,&#xA;    &quot;Instrument model&quot;: &quot;3760&quot;,&#xA;    &quot;Instrument serial number&quot;: &quot;141&quot;,&#xA;    &quot;Method ref&quot;: &quot;US06L_cpc_ref&quot;,&#xA;    &quot;Standard method&quot;: &quot;None&quot;,&#xA;    &quot;Inlet type&quot;: &quot;Hat or hood&quot;,&#xA;    &quot;Volume std. temperature&quot;: &quot;273.15 K&quot;,&#xA;    &quot;Volume std. pressure&quot;: &quot;1013.25 hPa&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;US06L, National Oceanic and Atmospheric Administration, NOAA/GML, Global Monitoring Laboratory, 325 Broadway, , CO 80305-3, Boulder, U.S.A.&quot;,&#xA;    &quot;Framework acronym&quot;: &quot;GAW-WDCA, NOAA-ESRL&quot;,&#xA;    &quot;Framework name&quot;: &quot;World Data Centre for Aerosols, &quot;,&#xA;    &quot;Framework description&quot;: &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme., &quot;,&#xA;    &quot;Framework contact name&quot;: &quot;Markus Fiebig, Markus Fiebig&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no&quot;,&#xA;    &quot;Originator&quot;: &quot;Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, \&quot;Boulder, CO\&quot;, USA&quot;,&#xA;    &quot;Submitter&quot;: &quot;Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, \&quot;Boulder, CO\&quot;, USA&quot;,&#xA;    &quot;Acknowledgement&quot;: &quot;Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator&quot;&#xA;}" />
  <attribute name="standard_name_vocabulary" value="CF-1.7, ACDD-1.3" />
  <attribute name="history" value="None" />
  <attribute name="creator_url" value="ebas.nilu.no" />
  <attribute name="_CoordSysBuilder" value="ucar.nc2.internal.dataset.conv.CF1Convention" />
  <dimension name="time" length="8760" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="1" />
  <dimension name="Location" length="1" />
  <dimension name="pressure_qc_flags" length="1" />
  <dimension name="relative_humidity_qc_flags" length="1" />
  <dimension name="temperature_qc_flags" length="1" />
  <dimension name="particle_number_concentration_amean_qc_flags" length="1" />
  <dimension name="particle_number_concentration_prec1587_qc_flags" length="1" />
  <dimension name="particle_number_concentration_perc8413_qc_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2025-01-01T00:30:00Z" />
    <attribute name="time_coverage_end" value="2025-12-31T23:30:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="3600.0" />
    <attribute name="time_coverage_duration" value="P0Y0M364DT23H0M0.000S" />
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  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-06-21" />
    <attribute name="nciso_version" value="2.4.8" />
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  <variable name="time_bnds" shape="time tbnds" type="double">
    <attribute name="long_name" value="time bounds for measurement" />
  </variable>
  <variable name="metadata_time_bnds" shape="metadata_time tbnds" type="double">
    <attribute name="long_name" value="time bounds for ebas metadata intervals" />
  </variable>
  <variable name="pressure" shape="Location time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="hPa" />
    <attribute name="ancillary_variables" value="pressure_qc pressure_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="20260608125053" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by Forge 1.0.6 and EBAS-IO V.4.04.00" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_station_code" value="US0035R" />
    <attribute name="ebas_platform_code" value="US0035S" />
    <attribute name="ebas_station_name" value="Bondville" />
    <attribute name="ebas_station_latitude" value="40.05" />
    <attribute name="ebas_station_longitude" value="-88.36667" />
    <attribute name="ebas_station_altitude" value="213.0 m" />
    <attribute name="ebas_measurement_latitude" value="40.0499992371" />
    <attribute name="ebas_measurement_longitude" value="-88.3666687012" />
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    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="pressure" />
    <attribute name="ebas_unit" value="hPa" />
    <attribute name="ebas_matrix" value="instrument" />
    <attribute name="ebas_laboratory_code" value="US06L" />
    <attribute name="ebas_instrument_type" value="cpc" />
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    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3760" />
    <attribute name="ebas_instrument_serial_number" value="141" />
    <attribute name="ebas_method_ref" value="US06L_cpc_ref" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <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="US06L, National Oceanic and Atmospheric Administration, NOAA/GML, Global Monitoring Laboratory, 325 Broadway, , CO 80305-3, Boulder, U.S.A." />
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    <attribute name="ebas_framework_name" value="World Data Centre for Aerosols, " />
    <attribute name="ebas_framework_description" value="The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme., " />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;Boulder, CO&quot;, USA" />
    <attribute name="ebas_submitter" value="Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;Boulder, CO&quot;, USA" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
  </variable>
  <variable name="pressure_qc" shape="Location pressure_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" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="relative_humidity" shape="Location time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="relative_humidity" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="%" />
    <attribute name="ancillary_variables" value="relative_humidity_qc relative_humidity_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="20260608125053" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by Forge 1.0.6 and EBAS-IO V.4.04.00" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_station_code" value="US0035R" />
    <attribute name="ebas_platform_code" value="US0035S" />
    <attribute name="ebas_station_name" value="Bondville" />
    <attribute name="ebas_station_latitude" value="40.05" />
    <attribute name="ebas_station_longitude" value="-88.36667" />
    <attribute name="ebas_station_altitude" value="213.0 m" />
    <attribute name="ebas_measurement_latitude" value="40.0499992371" />
    <attribute name="ebas_measurement_longitude" value="-88.3666687012" />
    <attribute name="ebas_measurement_altitude" value="213.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="relative_humidity" />
    <attribute name="ebas_unit" value="%" />
    <attribute name="ebas_matrix" value="instrument" />
    <attribute name="ebas_laboratory_code" value="US06L" />
    <attribute name="ebas_instrument_type" value="cpc" />
    <attribute name="ebas_instrument_name" value="TSI_3760_BND" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3760" />
    <attribute name="ebas_instrument_serial_number" value="141" />
    <attribute name="ebas_method_ref" value="US06L_cpc_ref" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <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="US06L, National Oceanic and Atmospheric Administration, NOAA/GML, Global Monitoring Laboratory, 325 Broadway, , CO 80305-3, Boulder, U.S.A." />
    <attribute name="ebas_framework_acronym" value="GAW-WDCA, NOAA-ESRL" />
    <attribute name="ebas_framework_name" value="World Data Centre for Aerosols, " />
    <attribute name="ebas_framework_description" value="The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme., " />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;Boulder, CO&quot;, USA" />
    <attribute name="ebas_submitter" value="Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;Boulder, CO&quot;, USA" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
  </variable>
  <variable name="relative_humidity_qc" shape="Location relative_humidity_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="relative_humidity_ebasmetadata" shape="Location metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="temperature" shape="Location time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="K" />
    <attribute name="ancillary_variables" value="temperature_qc temperature_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="20260608125053" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by Forge 1.0.6 and EBAS-IO V.4.04.00" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_station_code" value="US0035R" />
    <attribute name="ebas_platform_code" value="US0035S" />
    <attribute name="ebas_station_name" value="Bondville" />
    <attribute name="ebas_station_latitude" value="40.05" />
    <attribute name="ebas_station_longitude" value="-88.36667" />
    <attribute name="ebas_station_altitude" value="213.0 m" />
    <attribute name="ebas_measurement_latitude" value="40.0499992371" />
    <attribute name="ebas_measurement_longitude" value="-88.3666687012" />
    <attribute name="ebas_measurement_altitude" value="213.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="temperature" />
    <attribute name="ebas_unit" value="K" />
    <attribute name="ebas_matrix" value="instrument" />
    <attribute name="ebas_laboratory_code" value="US06L" />
    <attribute name="ebas_instrument_type" value="cpc" />
    <attribute name="ebas_instrument_name" value="TSI_3760_BND" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3760" />
    <attribute name="ebas_instrument_serial_number" value="141" />
    <attribute name="ebas_method_ref" value="US06L_cpc_ref" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <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="US06L, National Oceanic and Atmospheric Administration, NOAA/GML, Global Monitoring Laboratory, 325 Broadway, , CO 80305-3, Boulder, U.S.A." />
    <attribute name="ebas_framework_acronym" value="GAW-WDCA, NOAA-ESRL" />
    <attribute name="ebas_framework_name" value="World Data Centre for Aerosols, " />
    <attribute name="ebas_framework_description" value="The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme., " />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;Boulder, CO&quot;, USA" />
    <attribute name="ebas_submitter" value="Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;Boulder, CO&quot;, USA" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
  </variable>
  <variable name="temperature_qc" shape="Location temperature_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="temperature_ebasmetadata" shape="Location metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="particle_number_concentration_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="number_concentration_of_particles_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/cm3" />
    <attribute name="ancillary_variables" value="particle_number_concentration_amean_qc particle_number_concentration_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="20260608125053" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by Forge 1.0.6 and EBAS-IO V.4.04.00" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_station_code" value="US0035R" />
    <attribute name="ebas_platform_code" value="US0035S" />
    <attribute name="ebas_station_name" value="Bondville" />
    <attribute name="ebas_station_latitude" value="40.05" />
    <attribute name="ebas_station_longitude" value="-88.36667" />
    <attribute name="ebas_station_altitude" value="213.0 m" />
    <attribute name="ebas_measurement_latitude" value="40.0499992371" />
    <attribute name="ebas_measurement_longitude" value="-88.3666687012" />
    <attribute name="ebas_measurement_altitude" value="213.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="particle_number_concentration" />
    <attribute name="ebas_unit" value="1/cm3" />
    <attribute name="ebas_matrix" value="aerosol" />
    <attribute name="ebas_laboratory_code" value="US06L" />
    <attribute name="ebas_instrument_type" value="cpc" />
    <attribute name="ebas_instrument_name" value="TSI_3760_BND" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3760" />
    <attribute name="ebas_instrument_serial_number" value="141" />
    <attribute name="ebas_method_ref" value="US06L_cpc_ref" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <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="US06L, National Oceanic and Atmospheric Administration, NOAA/GML, Global Monitoring Laboratory, 325 Broadway, , CO 80305-3, Boulder, U.S.A." />
    <attribute name="ebas_framework_acronym" value="GAW-WDCA, NOAA-ESRL" />
    <attribute name="ebas_framework_name" value="World Data Centre for Aerosols, " />
    <attribute name="ebas_framework_description" value="The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme., " />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;Boulder, CO&quot;, USA" />
    <attribute name="ebas_submitter" value="Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;Boulder, CO&quot;, USA" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
  </variable>
  <variable name="particle_number_concentration_amean_qc" shape="particle_number_concentration_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="particle_number_concentration_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="particle_number_concentration_prec1587" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="number_concentration_of_particles_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/cm3" />
    <attribute name="ancillary_variables" value="particle_number_concentration_prec1587_qc particle_number_concentration_prec1587_ebasmetadata" />
    <attribute name="cell_methods" value="time: percentile:15.87" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20260608125053" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by Forge 1.0.6 and EBAS-IO V.4.04.00" />
    <attribute name="ebas_statistics" value="percentile:15.87" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_station_code" value="US0035R" />
    <attribute name="ebas_platform_code" value="US0035S" />
    <attribute name="ebas_station_name" value="Bondville" />
    <attribute name="ebas_station_latitude" value="40.05" />
    <attribute name="ebas_station_longitude" value="-88.36667" />
    <attribute name="ebas_station_altitude" value="213.0 m" />
    <attribute name="ebas_measurement_latitude" value="40.0499992371" />
    <attribute name="ebas_measurement_longitude" value="-88.3666687012" />
    <attribute name="ebas_measurement_altitude" value="213.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="particle_number_concentration" />
    <attribute name="ebas_unit" value="1/cm3" />
    <attribute name="ebas_matrix" value="aerosol" />
    <attribute name="ebas_laboratory_code" value="US06L" />
    <attribute name="ebas_instrument_type" value="cpc" />
    <attribute name="ebas_instrument_name" value="TSI_3760_BND" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3760" />
    <attribute name="ebas_instrument_serial_number" value="141" />
    <attribute name="ebas_method_ref" value="US06L_cpc_ref" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <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="US06L, National Oceanic and Atmospheric Administration, NOAA/GML, Global Monitoring Laboratory, 325 Broadway, , CO 80305-3, Boulder, U.S.A." />
    <attribute name="ebas_framework_acronym" value="GAW-WDCA, NOAA-ESRL" />
    <attribute name="ebas_framework_name" value="World Data Centre for Aerosols, " />
    <attribute name="ebas_framework_description" value="The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme., " />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;Boulder, CO&quot;, USA" />
    <attribute name="ebas_submitter" value="Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;Boulder, CO&quot;, USA" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
  </variable>
  <variable name="particle_number_concentration_prec1587_qc" shape="particle_number_concentration_prec1587_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="particle_number_concentration_prec1587_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="particle_number_concentration_perc8413" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="number_concentration_of_particles_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/cm3" />
    <attribute name="ancillary_variables" value="particle_number_concentration_perc8413_qc particle_number_concentration_perc8413_ebasmetadata" />
    <attribute name="cell_methods" value="time: percentile:84.13" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20260608125053" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by Forge 1.0.6 and EBAS-IO V.4.04.00" />
    <attribute name="ebas_statistics" value="percentile:84.13" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_station_code" value="US0035R" />
    <attribute name="ebas_platform_code" value="US0035S" />
    <attribute name="ebas_station_name" value="Bondville" />
    <attribute name="ebas_station_latitude" value="40.05" />
    <attribute name="ebas_station_longitude" value="-88.36667" />
    <attribute name="ebas_station_altitude" value="213.0 m" />
    <attribute name="ebas_measurement_latitude" value="40.0499992371" />
    <attribute name="ebas_measurement_longitude" value="-88.3666687012" />
    <attribute name="ebas_measurement_altitude" value="213.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="particle_number_concentration" />
    <attribute name="ebas_unit" value="1/cm3" />
    <attribute name="ebas_matrix" value="aerosol" />
    <attribute name="ebas_laboratory_code" value="US06L" />
    <attribute name="ebas_instrument_type" value="cpc" />
    <attribute name="ebas_instrument_name" value="TSI_3760_BND" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3760" />
    <attribute name="ebas_instrument_serial_number" value="141" />
    <attribute name="ebas_method_ref" value="US06L_cpc_ref" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <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="US06L, National Oceanic and Atmospheric Administration, NOAA/GML, Global Monitoring Laboratory, 325 Broadway, , CO 80305-3, Boulder, U.S.A." />
    <attribute name="ebas_framework_acronym" value="GAW-WDCA, NOAA-ESRL" />
    <attribute name="ebas_framework_name" value="World Data Centre for Aerosols, " />
    <attribute name="ebas_framework_description" value="The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme., " />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;Boulder, CO&quot;, USA" />
    <attribute name="ebas_submitter" value="Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;Boulder, CO&quot;, USA" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
  </variable>
  <variable name="particle_number_concentration_perc8413_qc" shape="particle_number_concentration_perc8413_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="particle_number_concentration_perc8413_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>
  <variable name="Location" shape="Location" type="String" />
</netcdf>
