Attributes {
    HDF5_GLOBAL {
        String IdentifierProductDOI "10.5067/AURA/OMI/DATA3010";
        String ProductGenerationAlgorithm "OMHCHOd";
        String RangeBeginningDate "2007-07-28";
        String ContactPersonName "Kelly Chance";
        String GranuleID "OMI-Aura_L3-OMHCHOd_2007m0728_v003-2019m0726t005936.nc";
        String RangeBeginningTime "00:00:00Z";
        String RangeEndingTime "00:00:00Z";
        String ContactPersonEmail "kchange@cfa.harvard.edu";
        String DataSetQuality "OMHCHOd dataset has been computed after excluding level 2 observations with SZA > 70 and cloud fraction > 0.3 and including only the highest quality retrievals as characterized by the level 2 product quality flags. Further details can be found in the OMHCHOd.README file";
        String ProcessingLevel "Level 3";
        String VersionID "003";
        String IdentifierProductionDOIAuthority "https://www.doi.org";
        String references "Sun et al., 2018 (https://doi.org/10.5194/amt-11-6679-2018),Gonzalez Abad et al., 2015 (https://doi.org/10.5194/amt-8-19-2015)";
        Float32 SouthernmostLatitude -90.00000000;
        String ContactPersonRole "Lead algorithm scientist";
        String ObservationArea "Global";
        String institution "OMI SIPS";
        String ProductionDateTime "2019m0726t005936Z";
        Float32 NorthernmostLatitude 90.00000000;
        Float32 MaximumCloudFraction 0.3000000119;
        String ProductGenerationAlgorithmVersion "0.0.5";
        Float32 LongitudeResolution 0.1000000015;
        String title "OMI/Aura Formaldehyde (HCHO) Total Column Daily L3 Weighted Mean Global 0.1deg Lat/Lon Grid";
        Float32 MaximumSZA 70.00000000;
        String Format "NetCDF-4";
        Float32 EasternmostLongitude 180.0000000;
        String InputOriginalFile "OMI-Aura_L2-OMHCHO_2007m0727t2334-o16131_v003-2014m0622t201401.he5,OMI-Aura_L2-OMHCHO_2007m0728t0113-o16132_v003-2014m0622t201702.he5,OMI-Aura_L2-OMHCHO_2007m0728t0252-o16133_v003-2014m0622t201314.he5,OMI-Aura_L2-OMHCHO_2007m0728t0431-o16134_v003-2014m0622t202148.he5,OMI-Aura_L2-OMHCHO_2007m0728t0610-o16135_v003-2014m0622t201839.he5,OMI-Aura_L2-OMHCHO_2007m0728t0748-o16136_v003-2014m0622t201817.he5,OMI-Aura_L2-OMHCHO_2007m0728t0927-o16137_v003-2014m0622t201257.he5,OMI-Aura_L2-OMHCHO_2007m0728t1106-o16138_v003-2014m0622t201824.he5,OMI-Aura_L2-OMHCHO_2007m0728t1245-o16139_v003-2014m0622t201648.he5,OMI-Aura_L2-OMHCHO_2007m0728t1424-o16140_v003-2014m0622t202232.he5,OMI-Aura_L2-OMHCHO_2007m0728t1603-o16141_v003-2014m0622t201758.he5,OMI-Aura_L2-OMHCHO_2007m0728t1742-o16142_v003-2014m0622t202204.he5,OMI-Aura_L2-OMHCHO_2007m0728t1921-o16143_v003-2014m0622t201801.he5,OMI-Aura_L2-OMHCHO_2007m0728t2059-o16144_v003-2014m0622t202033.he5,OMI-Aura_L2-OMHCHO_2007m0728t2238-o16145_v003-2014m0622t201957.he5";
        String Conventions "CF-1.7";
        String source "OMI";
        String DayOfYear "209";
        Float32 LatitudeResolution 0.1000000015;
        String LongName "OMI/Aura Formaldehyde (HCHO) Total Column Daily L3 Weighted Mean Global 0.1deg Lat/Lon Grid";
        String RangeEndingDate "2007-07-29";
        String ShortName "OMHCHOd";
        Float32 WesternmostLongitude -180.0000000;
        String history "2019m0726t005936Z; Original file created by OMI SIPS";
    }
    key_science_data {
    }
    support_data {
    }
    qa_statistics {
    }
    key_science_data_column_amount {
        Float32 _FillValue -1.000000015e+30;
        String comment "mean formaldehyde column amount; units of molecules/cm^2";
        String long_name "HCHO column amount";
        String units "molecules/cm^2";
        String coordinates "longitude latitude";
        String _Storage "contiguous";
        String origname "column_amount";
        String fullnamepath "/key_science_data/column_amount";
    }
    key_science_data_column_uncertainty {
        Float32 _FillValue -1.000000015e+30;
        String comment "mean column amount uncertainty; units of molecules/cm^2";
        String long_name "HCHO column uncertainty";
        String units "molecules/cm^2";
        String coordinates "longitude latitude";
        String _Storage "contiguous";
        String origname "column_uncertainty";
        String fullnamepath "/key_science_data/column_uncertainty";
    }
    support_data_albedo {
        Float32 _FillValue -1.000000015e+30;
        String comment "surface albedo";
        String long_name "surface albedo";
        String units "1";
        Float32 valid_min 0.000000000;
        Float32 valid_max 1.000000000;
        String coordinates "longitude latitude";
        String _Storage "contiguous";
        String origname "albedo";
        String fullnamepath "/support_data/albedo";
    }
    support_data_terrain_height {
        Int16 _FillValue -30000;
        String comment "terrain height";
        String long_name "terrain height";
        String units "m";
        Int16 valid_min -1000;
        Int16 valid_max 10000;
        String coordinates "longitude latitude";
        String _Storage "contiguous";
        String origname "terrain_height";
        String fullnamepath "/support_data/terrain_height";
    }
    support_data_cloud_fraction {
        Float32 _FillValue -1.000000015e+30;
        String comment "cloud fraction for AMF calculation";
        String long_name "AMF cloud fraction";
        String units "1";
        Float32 valid_min 0.000000000;
        Float32 valid_max 1.000000000;
        String coordinates "longitude latitude";
        String _Storage "contiguous";
        String origname "cloud_fraction";
        String fullnamepath "/support_data/cloud_fraction";
    }
    support_data_cloud_pressure {
        Float32 _FillValue -1.000000015e+30;
        String comment "cloud pressure for AMF calculation";
        String long_name "AMF cloud pressure";
        String units "hPa";
        Float32 valid_min 0.000000000;
        Float32 valid_max 1200.000000;
        String coordinates "longitude latitude";
        String _Storage "contiguous";
        String origname "cloud_pressure";
        String fullnamepath "/support_data/cloud_pressure";
    }
    support_data_amf {
        Float32 _FillValue -1.000000015e+30;
        String comment "air mass factor (AMF)";
        String long_name "air mass factor";
        String units "1";
        Float32 valid_min 0.000000000;
        Float32 valid_max 100.0000000;
        String coordinates "longitude latitude";
        String _Storage "contiguous";
        String origname "amf";
        String fullnamepath "/support_data/amf";
    }
    support_data_sample_weight {
        Float32 _FillValue -1.000000015e+30;
        String comment "sample weight";
        String long_name "sample weight";
        String units "1";
        Float32 valid_min 0.000000000;
        String coordinates "longitude latitude";
        String _Storage "contiguous";
        String origname "sample_weight";
        String fullnamepath "/support_data/sample_weight";
    }
    qa_statistics_num_samples {
        Float32 _FillValue -1.000000000;
        String comment "number of samples in the calculation considering the summed spatial sensitivity of all satellite pixels in each level 3 grid box";
        String long_name "number of samples";
        String units "1";
        Float32 valid_min 0.000000000;
        Float32 valid_max 1000.000000;
        String coordinates "longitude latitude";
        String _Storage "contiguous";
        String origname "num_samples";
        String fullnamepath "/qa_statistics/num_samples";
    }
    qa_statistics_data_quality_flag {
        Int16 _FillValue 2;
        String comment "main data quality flag. 0 (good, number of samples > 0.1)1 (good, number of samples < 0.1) 2 (bad / not computed)";
        String long_name "main data quality flag";
        Int16 falg_values 0, 1, 2;
        String flag_meanings "good_number_of_samples_greater_than_0.1 good_number_of_samples_less_than_0.1 bad_or_not_computed";
        Int16 valid_min 0;
        Int16 valid_max 2;
        String coordinates "longitude latitude";
        String _Storage "contiguous";
        String origname "data_quality_flag";
        String fullnamepath "/qa_statistics/data_quality_flag";
    }
    latitude {
        Float32 _FillValue -1.000000015e+30;
        String comment "latitude at grid box center";
        String long_name "latitude";
        String units "degrees_north";
        Float32 valid_min -90.00000000;
        Float32 valid_max 90.00000000;
        String _Storage "contiguous";
        String origname "latitude";
        String fullnamepath "/latitude";
    }
    longitude {
        Float32 _FillValue -1.000000015e+30;
        String comment "longitude at grid box center";
        String long_name "longitude";
        String units "degrees_east";
        Float32 valid_min -180.0000000;
        Float32 valid_max 180.0000000;
        String _Storage "contiguous";
        String origname "longitude";
        String fullnamepath "/longitude";
    }
}