HDF4 file: 1200 data descriptors
library version = "HDF Version 4.2 Release 14, June 26, 2018"
vgroup "/bira-iasb/projects/FRM4DOAS/applications/validation_fv002/results/o3strato/stations/ATHENS/1674_1/o3/fv002/2020/groundbased_uvvis.doas.zenith.o3_iup008_frm4doas.01_athens_20201105t045401z_20201105t152154z_002.hdf" class "CDF0.0"
	vgroup "fakeDim0" class "Dim0.0"
		vdata "fakeDim0" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim1" class "Dim0.0"
		vdata "fakeDim1" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim2" class "Dim0.0"
		vdata "fakeDim2" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim3" class "Dim0.0"
		vdata "fakeDim3" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim4" class "Dim0.0"
		vdata "fakeDim4" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim5" class "Dim0.0"
		vdata "fakeDim5" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim6" class "Dim0.0"
		vdata "fakeDim6" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim7" class "Dim0.0"
		vdata "fakeDim7" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim8" class "Dim0.0"
		vdata "fakeDim8" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim9" class "Dim0.0"
		vdata "fakeDim9" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim10" class "Dim0.0"
		vdata "fakeDim10" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim11" class "Dim0.0"
		vdata "fakeDim11" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim12" class "Dim0.0"
		vdata "fakeDim12" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim13" class "Dim0.0"
		vdata "fakeDim13" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim14" class "Dim0.0"
		vdata "fakeDim14" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim15" class "Dim0.0"
		vdata "fakeDim15" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim16" class "Dim0.0"
		vdata "fakeDim16" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim17" class "Dim0.0"
		vdata "fakeDim17" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim18" class "Dim0.0"
		vdata "fakeDim18" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim19" class "Dim0.0"
		vdata "fakeDim19" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim20" class "Dim0.0"
		vdata "fakeDim20" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim21" class "Dim0.0"
		vdata "fakeDim21" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim22" class "Dim0.0"
		vdata "fakeDim22" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim23" class "Dim0.0"
		vdata "fakeDim23" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim24" class "Dim0.0"
		vdata "fakeDim24" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim25" class "Dim0.0"
		vdata "fakeDim25" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim26" class "Dim0.0"
		vdata "fakeDim26" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim27" class "Dim0.0"
		vdata "fakeDim27" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim28" class "Dim0.0"
		vdata "fakeDim28" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim29" class "Dim0.0"
		vdata "fakeDim29" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim30" class "Dim0.0"
		vdata "fakeDim30" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim31" class "Dim0.0"
		vdata "fakeDim31" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim32" class "Dim0.0"
		vdata "fakeDim32" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim33" class "Dim0.0"
		vdata "fakeDim33" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim34" class "Dim0.0"
		vdata "fakeDim34" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim35" class "Dim0.0"
		vdata "fakeDim35" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim36" class "Dim0.0"
		vdata "fakeDim36" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim37" class "Dim0.0"
		vdata "fakeDim37" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim38" class "Dim0.0"
		vdata "fakeDim38" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim39" class "Dim0.0"
		vdata "fakeDim39" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim40" class "Dim0.0"
		vdata "fakeDim40" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim41" class "Dim0.0"
		vdata "fakeDim41" class "DimVal0.1": fields Values; 1 records
	vgroup "fakeDim42" class "Dim0.0"
		vdata "fakeDim42" class "DimVal0.1": fields Values; 1 records
	vgroup "DATETIME" class "Var0.0"
		attribute VAR_DATA_TYPE = "DOUBLE"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "datetime (UT), defined relative to reference datetime of Jan. 1, 2000 at 0:00:00 UT which is equal to 0.00"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "DATETIME"
		attribute VAR_NOTES = "mean time of the measurement sequence used for each retrieval"
		attribute VAR_SIZE = "2"
		attribute VAR_SI_CONVERSION = "0.0;86400.0;s"
		attribute VAR_UNITS = "MJD2K"
		attribute VAR_VALID_MAX = 10000.0
		attribute VAR_VALID_MIN = -5500.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "ALTITUDE" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "ALTITUDE"
		attribute VAR_DESCRIPTION = "Grid of altitude levels (asl) upon which the retrieved target profile as well as pressure and temperature profiles are reported"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "ALTITUDE"
		attribute VAR_NOTES = "these altitudes are the centers of the retrieval altitude layers (geometric mean between the 2 layer boundaries); the reported number densities, P and T are effective layer values."
		attribute VAR_SIZE = "50"
		attribute VAR_SI_CONVERSION = "0.0;1.0E3;m"
		attribute VAR_UNITS = "km"
		attribute VAR_VALID_MAX = 120.0
		attribute VAR_VALID_MIN = 0.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "ALTITUDE.BOUNDARIES" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "ALTITUDE;INDEPENDENT"
		attribute VAR_DESCRIPTION = "2D matrix providing the layer boundaries (asl) used for vertical profile retrieval"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "ALTITUDE.BOUNDARIES"
		attribute VAR_NOTES = "The retrieved partial columns are given at the center between the boundaries provided in this vector. The lower most boundary is at the altitude of the site."
		attribute VAR_SIZE = "50;2"
		attribute VAR_SI_CONVERSION = "0.0;1.0E3;m"
		attribute VAR_UNITS = "km"
		attribute VAR_VALID_MAX = 120.0
		attribute VAR_VALID_MIN = 0.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "ALTITUDE.INSTRUMENT" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "CONSTANT"
		attribute VAR_DESCRIPTION = "Altitude of the location of the instrument above sea level"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "ALTITUDE.INSTRUMENT"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "1"
		attribute VAR_SI_CONVERSION = "0.0;1.0;m"
		attribute VAR_UNITS = "m"
		attribute VAR_VALID_MAX = 5000.0
		attribute VAR_VALID_MIN = -0.0500000007
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "ANGLE.SOLAR_AZIMUTH" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "azimuth angle of the sun (GEOMS convention is 0.0 for north, 90.0 for east)"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "ANGLE.SOLAR_AZIMUTH"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "2"
		attribute VAR_SI_CONVERSION = "0.0;1.74533E-2;rad"
		attribute VAR_UNITS = "deg"
		attribute VAR_VALID_MAX = 360.0
		attribute VAR_VALID_MIN = 0.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "ANGLE.SOLAR_ZENITH.ASTRONOMICAL" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "astronomical zenith angle of the sun"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "ANGLE.SOLAR_ZENITH.ASTRONOMICAL"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "2"
		attribute VAR_SI_CONVERSION = "0.0;1.74533E-2;rad"
		attribute VAR_UNITS = "deg"
		attribute VAR_VALID_MAX = 180.0
		attribute VAR_VALID_MIN = 0.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "ANGLE.VIEW_AZIMUTH" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "pointing azimuth angle of the MAXDOAS (GEOMS convention is 0.0 for north, 90.0 for east)"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "ANGLE.VIEW_AZIMUTH"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "2"
		attribute VAR_SI_CONVERSION = "0.0;1.74533E-2;rad"
		attribute VAR_UNITS = "deg"
		attribute VAR_VALID_MAX = 360.0
		attribute VAR_VALID_MIN = 0.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "ANGLE.VIEW_ZENITH" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "pointing zenith angle of the MAXDOAS"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "ANGLE.VIEW_ZENITH"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "2"
		attribute VAR_SI_CONVERSION = "0.0;1.74533E-2;rad"
		attribute VAR_UNITS = "deg"
		attribute VAR_VALID_MAX = 180.0
		attribute VAR_VALID_MIN = 0.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "CLOUD.CONDITIONS" class "Var0.0"
		attribute VAR_DATA_TYPE = "STRING"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "Possible Values: clear-sky; thin clouds; thick clouds; broken clouds; [empty]. [empty] means that the cloud retrieval is not successful or not possible"
		attribute VAR_FILL_VALUE = ""
		attribute VAR_NAME = "CLOUD.CONDITIONS"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "2"
		attribute VAR_SI_CONVERSION = ""
		attribute VAR_UNITS = ""
		attribute VAR_VALID_MAX = ""
		attribute VAR_VALID_MIN = ""
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "COLUMN.PARTIAL_INDEPENDENT" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME;ALTITUDE"
		attribute VAR_DESCRIPTION = "Vertical profile of partial columns of dry air number densities (for conversion between VMR and partial column profile)"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "COLUMN.PARTIAL_INDEPENDENT"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "2;50"
		attribute VAR_SI_CONVERSION = "0.0;1.66054E-20;mol m-2"
		attribute VAR_UNITS = "molec cm-2"
		attribute VAR_VALID_MAX = 1.99999991e+25
		attribute VAR_VALID_MIN = 0.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "COLUMN.PARTIAL_INDEPENDENT_SOURCE" class "Var0.0"
		attribute VAR_DATA_TYPE = "STRING"
		attribute VAR_DEPEND = "CONSTANT"
		attribute VAR_DESCRIPTION = "Partial columns of air source (e.g. NCEP; Sonde; ECMWF etc.)"
		attribute VAR_FILL_VALUE = ""
		attribute VAR_NAME = "COLUMN.PARTIAL_INDEPENDENT_SOURCE"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "1"
		attribute VAR_SI_CONVERSION = ""
		attribute VAR_UNITS = ""
		attribute VAR_VALID_MAX = ""
		attribute VAR_VALID_MIN = ""
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "DATETIME.START" class "Var0.0"
		attribute VAR_DATA_TYPE = "DOUBLE"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "datetime start(UT), defined relative to reference datetime of Jan. 1, 2000 at 0:00:00 UT which is equal to 0.00"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "DATETIME.START"
		attribute VAR_NOTES = "start time of the measurement sequence used for each retrieval"
		attribute VAR_SIZE = "2"
		attribute VAR_SI_CONVERSION = "0.0;86400.0;s"
		attribute VAR_UNITS = "MJD2K"
		attribute VAR_VALID_MAX = 10000.0
		attribute VAR_VALID_MIN = -5500.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "DATETIME.STOP" class "Var0.0"
		attribute VAR_DATA_TYPE = "DOUBLE"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "datetime stop(UT), defined relative to reference datetime of Jan. 1, 2000 at 0:00:00 UT which is equal to 0.00"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "DATETIME.STOP"
		attribute VAR_NOTES = "End time of the measurement sequence used for each retrieval"
		attribute VAR_SIZE = "2"
		attribute VAR_SI_CONVERSION = "0.0;86400.0;s"
		attribute VAR_UNITS = "MJD2K"
		attribute VAR_VALID_MAX = 10000.0
		attribute VAR_VALID_MIN = -5500.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "INTEGRATION.TIME" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "duration of the measurement corresponding to the profile retrieval"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "INTEGRATION.TIME"
		attribute VAR_NOTES = " "
		attribute VAR_SIZE = "2"
		attribute VAR_SI_CONVERSION = "0.0;1.0;s"
		attribute VAR_UNITS = "s"
		attribute VAR_VALID_MAX = 25600.0
		attribute VAR_VALID_MIN = 0.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "LATITUDE" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME;ALTITUDE"
		attribute VAR_DESCRIPTION = "Latitude of the effective air mass. Values are given for each altitude layer (ALTITUDE)"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "LATITUDE"
		attribute VAR_NOTES = "sign convention: + for north and - for south"
		attribute VAR_SIZE = "2;50"
		attribute VAR_SI_CONVERSION = "0.0;1.74533E-2;rad"
		attribute VAR_UNITS = "deg"
		attribute VAR_VALID_MAX = 90.0
		attribute VAR_VALID_MIN = -90.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "LATITUDE.INSTRUMENT" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "CONSTANT"
		attribute VAR_DESCRIPTION = "latitude north (decimal degrees) of the location of the instrument"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "LATITUDE.INSTRUMENT"
		attribute VAR_NOTES = "sign convention: + for north and - for south"
		attribute VAR_SIZE = "1"
		attribute VAR_SI_CONVERSION = "0.0;1.74533E-2;rad"
		attribute VAR_UNITS = "deg"
		attribute VAR_VALID_MAX = 90.0
		attribute VAR_VALID_MIN = -90.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "LONGITUDE" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME;ALTITUDE"
		attribute VAR_DESCRIPTION = "Longitude of the effective air mass. Values are given for each altitude layer (ALTITUDE)"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "LONGITUDE"
		attribute VAR_NOTES = "sign convention: + for east and - for west"
		attribute VAR_SIZE = "2;50"
		attribute VAR_SI_CONVERSION = "0.0;1.74533E-2;rad"
		attribute VAR_UNITS = "deg"
		attribute VAR_VALID_MAX = 180.0
		attribute VAR_VALID_MIN = -180.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "LONGITUDE.INSTRUMENT" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "CONSTANT"
		attribute VAR_DESCRIPTION = "longitude east (decimal degrees) of the location of the instrument"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "LONGITUDE.INSTRUMENT"
		attribute VAR_NOTES = "sign convention: + for east and - for west"
		attribute VAR_SIZE = "1"
		attribute VAR_SI_CONVERSION = "0.0;1.74533E-2;rad"
		attribute VAR_UNITS = "deg"
		attribute VAR_VALID_MAX = 180.0
		attribute VAR_VALID_MIN = -180.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "O3.COLUMN.PARTIAL_SCATTER.SOLAR.ZENITH_APRIORI" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME;ALTITUDE"
		attribute VAR_DESCRIPTION = "a priori O3 (vertical) partial columns in the retrieved layers (zenith)"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "O3.COLUMN.PARTIAL_SCATTER.SOLAR.ZENITH_APRIORI"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "2;50"
		attribute VAR_SI_CONVERSION = "0.0;1.66054E-5;mol m-2"
		attribute VAR_UNITS = "Pmolec cm-2"
		attribute VAR_VALID_MAX = 1000.0
		attribute VAR_VALID_MIN = 0.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "O3.COLUMN.STRATOSPHERIC_SCATTER.SOLAR.ZENITH" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "O3 stratospheric column corresponding to retrieved profiles (zenith)"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "O3.COLUMN.STRATOSPHERIC_SCATTER.SOLAR.ZENITH"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "2"
		attribute VAR_SI_CONVERSION = "0.0;1.66054E-5;mol m-2"
		attribute VAR_UNITS = "Pmolec cm-2"
		attribute VAR_VALID_MAX = 10000000.0
		attribute VAR_VALID_MIN = -100.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "O3.COLUMN.STRATOSPHERIC_SCATTER.SOLAR.ZENITH_APRIORI" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "a priori O3 stratospheric column corresponding to a priori profiles (zenith)"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "O3.COLUMN.STRATOSPHERIC_SCATTER.SOLAR.ZENITH_APRIORI"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "2"
		attribute VAR_SI_CONVERSION = "0.0;1.66054E-5;mol m-2"
		attribute VAR_UNITS = "Pmolec cm-2"
		attribute VAR_VALID_MAX = 1e+10
		attribute VAR_VALID_MIN = -100.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "O3.COLUMN.STRATOSPHERIC_SCATTER.SOLAR.ZENITH_AVK" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME;ALTITUDE"
		attribute VAR_DESCRIPTION = "stratospheric vertical column averaging kernel for O3 derived from mixing ratio averaging kernel (zenith)"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "O3.COLUMN.STRATOSPHERIC_SCATTER.SOLAR.ZENITH_AVK"
		attribute VAR_NOTES = "this averaging kernel multiplies the partial column vector in order to get smoothed vertical column"
		attribute VAR_SIZE = "2;50"
		attribute VAR_SI_CONVERSION = "0.0;1.0;1"
		attribute VAR_UNITS = "1"
		attribute VAR_VALID_MAX = 15.0
		attribute VAR_VALID_MIN = -15.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "O3.COLUMN.STRATOSPHERIC_SCATTER.SOLAR.ZENITH_AMF" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "air mass factor associated with the total stratospheric vertical columns of O3 (zenith)"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "O3.COLUMN.STRATOSPHERIC_SCATTER.SOLAR.ZENITH_AMF"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "2"
		attribute VAR_SI_CONVERSION = "0.0;1.0;1"
		attribute VAR_UNITS = "1"
		attribute VAR_VALID_MAX = 50.0
		attribute VAR_VALID_MIN = 0.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "O3.COLUMN.STRATOSPHERIC_SCATTER.SOLAR.ZENITH_UNCERTAINTY.RANDOM.STANDARD" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "total random uncertainty on the retrieved vertical columns of O3 (zenith)"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "O3.COLUMN.STRATOSPHERIC_SCATTER.SOLAR.ZENITH_UNCERTAINTY.RANDOM.STANDARD"
		attribute VAR_NOTES = "smoothing error is not included!"
		attribute VAR_SIZE = "2"
		attribute VAR_SI_CONVERSION = "0.0;1.66054E-5;mol m-2"
		attribute VAR_UNITS = "Pmolec cm-2"
		attribute VAR_VALID_MAX = 1000.0
		attribute VAR_VALID_MIN = -100.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "O3.COLUMN.STRATOSPHERIC_SCATTER.SOLAR.ZENITH_UNCERTAINTY.SYSTEMATIC.STANDARD" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "total systematic uncertainty on the retrieved vertical columns of O3(zenith)"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "O3.COLUMN.STRATOSPHERIC_SCATTER.SOLAR.ZENITH_UNCERTAINTY.SYSTEMATIC.STANDARD"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "2"
		attribute VAR_SI_CONVERSION = "0.0;1.66054E-5;mol m-2"
		attribute VAR_UNITS = "Pmolec cm-2"
		attribute VAR_VALID_MAX = 1000.0
		attribute VAR_VALID_MIN = -100.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "O3.MIXING.RATIO.VOLUME_SCATTER.SOLAR.ZENITH_APRIORI" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME;ALTITUDE"
		attribute VAR_DESCRIPTION = "a priori vertical profile of O3 used in the retrieval in VMR units (zenith)"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "O3.MIXING.RATIO.VOLUME_SCATTER.SOLAR.ZENITH_APRIORI"
		attribute VAR_NOTES = "None"
		attribute VAR_SIZE = "2;50"
		attribute VAR_SI_CONVERSION = "0.0;1.0E-12;1"
		attribute VAR_UNITS = "pptv"
		attribute VAR_VALID_MAX = 8.9999999e+10
		attribute VAR_VALID_MIN = -9.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "PRESSURE_INDEPENDENT" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME;ALTITUDE"
		attribute VAR_DESCRIPTION = "Total effective air pressures in layers for vertical profile retrieval"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "PRESSURE_INDEPENDENT"
		attribute VAR_NOTES = "The pressure values represent the effective pressure in each layer and are reported at the center altitude of each layer"
		attribute VAR_SIZE = "2;50"
		attribute VAR_SI_CONVERSION = "0.0;1.0E2;kg m-1 s-2"
		attribute VAR_UNITS = "hPa"
		attribute VAR_VALID_MAX = 1100.0
		attribute VAR_VALID_MIN = 0.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "PRESSURE_INDEPENDENT_SOURCE" class "Var0.0"
		attribute VAR_DATA_TYPE = "STRING"
		attribute VAR_DEPEND = "CONSTANT"
		attribute VAR_DESCRIPTION = "Pressure profile source (e.g. NCEP, Sonde, ECMWF etc.)"
		attribute VAR_FILL_VALUE = ""
		attribute VAR_NAME = "PRESSURE_INDEPENDENT_SOURCE"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "1"
		attribute VAR_SI_CONVERSION = ""
		attribute VAR_UNITS = ""
		attribute VAR_VALID_MAX = ""
		attribute VAR_VALID_MIN = ""
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "TEMPERATURE_INDEPENDENT" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME;ALTITUDE"
		attribute VAR_DESCRIPTION = "effective air temperatures in layers for vertical profile retrieval"
		attribute VAR_FILL_VALUE = -90000.0
		attribute VAR_NAME = "TEMPERATURE_INDEPENDENT"
		attribute VAR_NOTES = "The temperature values represent the effective temperature in each layer and are reported at the center altitude of each layer"
		attribute VAR_SIZE = "2;50"
		attribute VAR_SI_CONVERSION = "0.0;1.0;K"
		attribute VAR_UNITS = "K"
		attribute VAR_VALID_MAX = 500.0
		attribute VAR_VALID_MIN = 0.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "TEMPERATURE_INDEPENDENT_SOURCE" class "Var0.0"
		attribute VAR_DATA_TYPE = "STRING"
		attribute VAR_DEPEND = "CONSTANT"
		attribute VAR_DESCRIPTION = "Temperature profile source (e.g. NCEP, Sonde, ECMWF etc.)"
		attribute VAR_FILL_VALUE = ""
		attribute VAR_NAME = "TEMPERATURE_INDEPENDENT_SOURCE"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "1"
		attribute VAR_SI_CONVERSION = ""
		attribute VAR_UNITS = ""
		attribute VAR_VALID_MAX = ""
		attribute VAR_VALID_MIN = ""
		vdata "" class "SDSVar": fields SDS variable; 0 records
	attribute DATA_ACKNOWLEDGEMENT = "please contact A. RICHTER"
	attribute DATA_CAVEATS = ""
	attribute DATA_DESCRIPTION = "Total ozone column data from ground-based zenith-sky UV-vis observations at ATHENS (GREECE) from IUP instrument nr 008, UVVIS channel 001.  Data retrieval performed using Hendrick, F., et al., Retrieval of nitrogen dioxide stratospheric profiles from ground-based zenith-sky UV-visible observations: Validation of the technique through correlative comparisons, Atmospheric Chemistry and Physics, 4, 2091-2106, 2004"
	attribute DATA_DISCIPLINE = "ATMOSPHERIC.PHYSICS;REMOTE.SENSING;GROUNDBASED"
	attribute DATA_FILE_VERSION = "002"
	attribute DATA_GROUP = "EXPERIMENTAL;PROFILE.STATIONARY"
	attribute DATA_LOCATION = "ATHENS"
	attribute DATA_MODIFICATIONS = "None"
	attribute DATA_QUALITY = "RD"
	attribute DATA_RULES_OF_USE = "CC-BY-NC-SA license; see also http://www.ndaccdemo.org/data/use-agreement for publication co-authorship policy"
	attribute DATA_SOURCE = "UVVIS.DOAS.ZENITH.O3_IUP008_FRM4DOAS.01"
	attribute DATA_START_DATE = "20201105T045401Z"
	attribute DATA_STOP_DATE = "20201105T152154Z"
	attribute DATA_TEMPLATE = "GEOMS-TE-UVVIS-DOAS-ZENITH-GAS-007"
	attribute DATA_VARIABLES = "DATETIME;ALTITUDE;ALTITUDE.BOUNDARIES;ALTITUDE.INSTRUMENT;ANGLE.SOLAR_AZIMUTH;ANGLE.SOLAR_ZENITH.ASTRONOMICAL;ANGLE.VIEW_AZIMUTH;ANGLE.VIEW_ZENITH;CLOUD.CONDITIONS;COLUMN.PARTIAL_INDEPENDENT;COLUMN.PARTIAL_INDEPENDENT_SOURCE;DATETIME.START;DATETIME.STOP;INTEGRATION.TIME;LATITUDE;LATITUDE.INSTRUMENT;LONGITUDE;LONGITUDE.INSTRUMENT;O3.COLUMN.PARTIAL_SCATTER.SOLAR.ZENITH_APRIORI;O3.COLUMN.STRATOSPHERIC_SCATTER.SOLAR.ZENITH;O3.COLUMN.STRATOSPHERIC_SCATTER.SOLAR.ZENITH_APRIORI;O3.COLUMN.STRATOSPHERIC_SCATTER.SOLAR.ZENITH_AVK;O3.COLUMN.STRATOSPHERIC_SCATTER.SOLAR.ZENITH_AMF;O3.COLUMN.STRATOSPHERIC_SCATTER.SOLAR.ZENITH_UNCERTAINTY.RANDOM.STANDARD;O3.COLUMN.STRATOSPHERIC_SCATTER.SOLAR.ZENITH_UNCERTAINTY.SYSTEMATIC.STANDARD;O3.MIXING.RATIO.VOLUME_SCATTER.SOLAR.ZENITH_APRIORI;PRESSURE_INDEPENDENT;PRESSURE_INDEPENDENT_SOURCE;TEMPERATURE_INDEPENDENT;TEMPERATURE_INDEPENDENT_SOURCE"
	attribute DATA_PROCESSOR = "FRM4DOAS.01"
	attribute DO_ADDRESS = "Avenue Circulaire, 3;B-1180 Brussels;BELGIUM"
	attribute DO_EMAIL = "franch@aeronomie.be"
	attribute DO_NAME = "Hendrick;Francois"
	attribute DO_AFFILIATION = "Belgian Institute for Space Aeronomy;BIRA.IASB"
	attribute DS_ADDRESS = "Avenue Circulaire, 3;B-1180 Brussels;BELGIUM"
	attribute DS_AFFILIATION = "Belgian Institute for Space Aeronomy;BIRA.IASB"
	attribute DS_EMAIL = "caroline.fayt@aeronomie.be"
	attribute DS_NAME = "Fayt;Caroline"
	attribute FILE_ACCESS = "NDACC;EVDC"
	attribute FILE_ASSOCIATION = "NDACC;ESA"
	attribute FILE_DOI = "https://doi.org/10.21336/apdw-nb87"
	attribute FILE_GENERATION_DATE = "20210118T215516Z"
	attribute FILE_META_VERSION = "04R057;CUSTOM"
	attribute FILE_NAME = "groundbased_uvvis.doas.zenith.o3_iup008_frm4doas.01_athens_20201105t045401z_20201105t152154z_002.hdf"
	attribute FILE_PROJECT_ID = "FRM4DOAS"
	attribute PI_ADDRESS = "P.O. Box 330440;D-28334 Bremen;Germany"
	attribute PI_AFFILIATION = "Institut fuer Umweltphysik, Universitaet Bremen;IUP"
	attribute PI_NAME = "Richter;Andreas"
	attribute PI_EMAIL = "richter@iup.physik.uni-bremen.de"