HDF4 file: 1000 data descriptors
library version = "HDF Version 4.2 Release 5, February 17, 2010"
vgroup "/bira-iasb/projects/FTIR/retrievals/working/ftir_op/sfit4/xianghe/bruker125HR/CO/v1/geoms/groundbased_ftir.co_cas.iap001_xianghe_20260706t022521z_20260709t080249z_001.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 "DATETIME" class "Var0.0"
		attribute VAR_DATA_TYPE = "DOUBLE"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "Mean of the zero path difference times of the individual scans that were averaged to produce the fitted spectrum"
		attribute VAR_FILL_VALUE = -99999999.0
		attribute VAR_NAME = "DATETIME"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "6"
		attribute VAR_SI_CONVERSION = "0.0;86400.0;s"
		attribute VAR_UNITS = "MJD2K"
		attribute VAR_VALID_MAX = 9686.3352903125
		attribute VAR_VALID_MIN = 9683.100942766203
		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 = -100000000.0
		attribute VAR_NAME = "LATITUDE.INSTRUMENT"
		attribute VAR_NOTES = ""
		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.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 = -100000000.0
		attribute VAR_NAME = "LONGITUDE.INSTRUMENT"
		attribute VAR_NOTES = ""
		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 "ALTITUDE.INSTRUMENT" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "CONSTANT"
		attribute VAR_DESCRIPTION = "Altitude of the location of the instrument"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "ALTITUDE.INSTRUMENT"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "1"
		attribute VAR_SI_CONVERSION = "0.0;1.0E3;m"
		attribute VAR_UNITS = "km"
		attribute VAR_VALID_MAX = 0.0460000001
		attribute VAR_VALID_MIN = 0.0460000001
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "SURFACE.PRESSURE_INDEPENDENT" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "Surface/ground pressure"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "SURFACE.PRESSURE_INDEPENDENT"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "6"
		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 = 500.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "SURFACE.TEMPERATURE_INDEPENDENT" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "Surface/ground temperature"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "SURFACE.TEMPERATURE_INDEPENDENT"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "6"
		attribute VAR_SI_CONVERSION = "0.0;1.0;K"
		attribute VAR_UNITS = "K"
		attribute VAR_VALID_MAX = 320.0
		attribute VAR_VALID_MIN = 220.0
		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 upon which the retrieved target vmr profile as well as pressure and temperature profiles are reported"
		attribute VAR_FILL_VALUE = -100000000.0
		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 vmr, P and T are effective layer values."
		attribute VAR_SIZE = "47"
		attribute VAR_SI_CONVERSION = "0.0;1.0E3;m"
		attribute VAR_UNITS = "km"
		attribute VAR_VALID_MAX = 120.0
		attribute VAR_VALID_MIN = -0.0500000007
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "ALTITUDE.BOUNDARIES" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "INDEPENDENT;ALTITUDE"
		attribute VAR_DESCRIPTION = "2D matrix providing the layer boundaries used for vertical profile retrieval"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "ALTITUDE.BOUNDARIES"
		attribute VAR_NOTES = "The retrieved partial columns are given between the boundaries provided in this vector. The lowermost boundary is equal to ALTITUDE.INSTRUMENT"
		attribute VAR_SIZE = "2;47"
		attribute VAR_SI_CONVERSION = "0.0;1.0E3;m"
		attribute VAR_UNITS = "km"
		attribute VAR_VALID_MAX = 125.0
		attribute VAR_VALID_MIN = -0.0500000007
		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 = -100000000.0
		attribute VAR_NAME = "PRESSURE_INDEPENDENT"
		attribute VAR_NOTES = "Used as apriori input; The pressure values represent the effective pressure in each layer and are reported at the center altitude of each layer"
		attribute VAR_SIZE = "6;47"
		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 "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 = -100000000.0
		attribute VAR_NAME = "TEMPERATURE_INDEPENDENT"
		attribute VAR_NOTES = "Used as apriori input for SFIT4; The temperature values represent the effective temperatures in each layer and are reported at the center altitude of each layer"
		attribute VAR_SIZE = "6;47"
		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 "INTEGRATION.TIME" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "duration of the measurement of the interferogram (and thus spectrum) from which the profile has been retrieved"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "INTEGRATION.TIME"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "6"
		attribute VAR_SI_CONVERSION = "0.0;1.0;s"
		attribute VAR_UNITS = "s"
		attribute VAR_VALID_MAX = 3600.0
		attribute VAR_VALID_MIN = 0.0
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "CO.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME;ALTITUDE"
		attribute VAR_DESCRIPTION = "Retrieved target vertical  profile in VMR units (with respect to dry air)"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "CO.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR"
		attribute VAR_NOTES = "retrieved from (cm-1): [2057.7,2058.0],[2069.56,2069.76],[2157.5,2159.15]"
		attribute VAR_SIZE = "6;47"
		attribute VAR_SI_CONVERSION = "0.0;1.0E-6;1"
		attribute VAR_UNITS = "ppmv"
		attribute VAR_VALID_MAX = 27.1420002
		attribute VAR_VALID_MIN = 0.0132370004
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "CO.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR_APRIORI" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME;ALTITUDE"
		attribute VAR_DESCRIPTION = "A-priori target vertical profile in VMR units (with respect to dry air)"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "CO.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR_APRIORI"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "6;47"
		attribute VAR_SI_CONVERSION = "0.0;1.0E-6;1"
		attribute VAR_UNITS = "ppmv"
		attribute VAR_VALID_MAX = 27.1539993
		attribute VAR_VALID_MIN = 0.0134439999
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "CO.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR_AVK" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME;ALTITUDE;ALTITUDE"
		attribute VAR_DESCRIPTION = "averaging kernel matrix (AVK) of the retrieved vertical CO profile, in VMR/VMR units"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "CO.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR_AVK"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "6;47;47"
		attribute VAR_SI_CONVERSION = "0.0;1.0;1"
		attribute VAR_UNITS = "1"
		attribute VAR_VALID_MAX = 0.511275053
		attribute VAR_VALID_MIN = -0.0727950931
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "CO.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR_UNCERTAINTY.RANDOM.COVARIANCE" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME;ALTITUDE;ALTITUDE"
		attribute VAR_DESCRIPTION = "total random error covariance matrix associated with the retrieved CO vertical profiles, in VMR units"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "CO.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR_UNCERTAINTY.RANDOM.COVARIANCE"
		attribute VAR_NOTES = "contributions (no smoothing!): measurement;retrieval_params;interfering_specs;temperature;sza;omega;zshift"
		attribute VAR_SIZE = "6;47;47"
		attribute VAR_SI_CONVERSION = "0.0;1.0E-12;1"
		attribute VAR_UNITS = "ppmv2"
		attribute VAR_VALID_MAX = 8.464438e-05
		attribute VAR_VALID_MIN = -4.29616875e-06
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "CO.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR_UNCERTAINTY.SYSTEMATIC.COVARIANCE" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME;ALTITUDE;ALTITUDE"
		attribute VAR_DESCRIPTION = "total systematic error covariance matrix associated with the retrieved CO vertical profiles, in VMR units"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "CO.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR_UNCERTAINTY.SYSTEMATIC.COVARIANCE"
		attribute VAR_NOTES = "contributions (no smoothing!): retrieval_params;interfering_specs;temperature;sza;lineint;linetair;linepair;omega;zshift"
		attribute VAR_SIZE = "6;47;47"
		attribute VAR_SI_CONVERSION = "0.0;1.0E-12;1"
		attribute VAR_UNITS = "ppmv2"
		attribute VAR_VALID_MAX = 0.00363282324
		attribute VAR_VALID_MIN = -0.000678105105
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "CO.COLUMN.PARTIAL_ABSORPTION.SOLAR" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME;ALTITUDE"
		attribute VAR_DESCRIPTION = "CO partial columns in the retrieval layers"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "CO.COLUMN.PARTIAL_ABSORPTION.SOLAR"
		attribute VAR_NOTES = "partial column evaluations use a priori pressure and temperature"
		attribute VAR_SIZE = "6;47"
		attribute VAR_SI_CONVERSION = "0.0;1.66054E-5;mol m-2"
		attribute VAR_UNITS = "Pmolec cm-2"
		attribute VAR_VALID_MAX = 438.407715
		attribute VAR_VALID_MIN = 0.283923566
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "CO.COLUMN.PARTIAL_ABSORPTION.SOLAR_APRIORI" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME;ALTITUDE"
		attribute VAR_DESCRIPTION = "CO a priori partial columns in the retrieval layers"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "CO.COLUMN.PARTIAL_ABSORPTION.SOLAR_APRIORI"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "6;47"
		attribute VAR_SI_CONVERSION = "0.0;1.66054E-5;mol m-2"
		attribute VAR_UNITS = "Pmolec cm-2"
		attribute VAR_VALID_MAX = 472.046204
		attribute VAR_VALID_MIN = 0.284248084
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "CO.COLUMN_ABSORPTION.SOLAR" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "Total vertical column of target gas"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "CO.COLUMN_ABSORPTION.SOLAR"
		attribute VAR_NOTES = "retrieved from (cm-1): [2057.7,2058.0],[2069.56,2069.76],[2157.5,2159.15]"
		attribute VAR_SIZE = "6"
		attribute VAR_SI_CONVERSION = "0.0;1.66054E-2;mol m-2"
		attribute VAR_UNITS = "Emolec cm-2"
		attribute VAR_VALID_MAX = 2.3471601
		attribute VAR_VALID_MIN = 1.98657203
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "CO.COLUMN_ABSORPTION.SOLAR_APRIORI" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "a priori total vertical CO column between boundaries of altitude grid"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "CO.COLUMN_ABSORPTION.SOLAR_APRIORI"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "6"
		attribute VAR_SI_CONVERSION = "0.0;1.66054E-2;mol m-2"
		attribute VAR_UNITS = "Emolec cm-2"
		attribute VAR_VALID_MAX = 2.42447591
		attribute VAR_VALID_MIN = 2.39634848
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "CO.COLUMN_ABSORPTION.SOLAR_AVK" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME;ALTITUDE"
		attribute VAR_DESCRIPTION = "total vertical column averaging kernel for CO derived from mixing ratio averaging kernel"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "CO.COLUMN_ABSORPTION.SOLAR_AVK"
		attribute VAR_NOTES = " this averaging kernel multiplies the partial column vector in order to get smoothed total column"
		attribute VAR_SIZE = "6;47"
		attribute VAR_SI_CONVERSION = "0.0;1.0;1"
		attribute VAR_UNITS = "1"
		attribute VAR_VALID_MAX = 1.03556442
		attribute VAR_VALID_MIN = 0.349219918
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "CO.COLUMN_ABSORPTION.SOLAR_UNCERTAINTY.RANDOM.STANDARD" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "total random uncertainty on the retrieved total vertical CO columns"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "CO.COLUMN_ABSORPTION.SOLAR_UNCERTAINTY.RANDOM.STANDARD"
		attribute VAR_NOTES = "contributions (no smoothing!): measurement;retrieval_params;interfering_specs;temperature;sza;omega;zshift"
		attribute VAR_SIZE = "6"
		attribute VAR_SI_CONVERSION = "0.0;1.66054E-2;mol m-2"
		attribute VAR_UNITS = "Emolec cm-2"
		attribute VAR_VALID_MAX = 0.0213945061
		attribute VAR_VALID_MIN = 0.018700758
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "CO.COLUMN_ABSORPTION.SOLAR_UNCERTAINTY.SYSTEMATIC.STANDARD" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "total systematic uncertainty on the retrieved total vertical CO columns"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "CO.COLUMN_ABSORPTION.SOLAR_UNCERTAINTY.SYSTEMATIC.STANDARD"
		attribute VAR_NOTES = "contributions (no smoothing!): retrieval_params;interfering_specs;temperature;sza;lineint;linetair;linepair;omega;zshift"
		attribute VAR_SIZE = "6"
		attribute VAR_SI_CONVERSION = "0.0;1.66054E-2;mol m-2"
		attribute VAR_UNITS = "Emolec cm-2"
		attribute VAR_VALID_MAX = 0.0652833059
		attribute VAR_VALID_MIN = 0.0481346287
		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 = -100000000.0
		attribute VAR_NAME = "ANGLE.SOLAR_ZENITH.ASTRONOMICAL"
		attribute VAR_NOTES = "calculated with function get_altitude(...,pressure=0) [pysolar 0.7]"
		attribute VAR_SIZE = "6"
		attribute VAR_SI_CONVERSION = "0.0;1.74533E-2;rad"
		attribute VAR_UNITS = "deg"
		attribute VAR_VALID_MAX = 95.0
		attribute VAR_VALID_MIN = 0.0
		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 (O at North, pos. to East, neg. to West)"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "ANGLE.SOLAR_AZIMUTH"
		attribute VAR_NOTES = "calculated with function get_azimuth(...) [pysolar 0.7]"
		attribute VAR_SIZE = "6"
		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 "H2O.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME;ALTITUDE"
		attribute VAR_DESCRIPTION = "Vertical profile of H2O adopted in the target gas retrieval in VMR units"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "H2O.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR"
		attribute VAR_NOTES = ""
		attribute VAR_SIZE = "6;47"
		attribute VAR_SI_CONVERSION = "0.0;1.0E-6;1"
		attribute VAR_UNITS = "ppmv"
		attribute VAR_VALID_MAX = 30787.0
		attribute VAR_VALID_MIN = 0.586809993
		vdata "" class "SDSVar": fields SDS variable; 0 records
	vgroup "H2O.COLUMN_ABSORPTION.SOLAR" class "Var0.0"
		attribute VAR_DATA_TYPE = "REAL"
		attribute VAR_DEPEND = "DATETIME"
		attribute VAR_DESCRIPTION = "Total vertical column of target gas"
		attribute VAR_FILL_VALUE = -100000000.0
		attribute VAR_NAME = "H2O.COLUMN_ABSORPTION.SOLAR"
		attribute VAR_NOTES = "retrieved from (cm-1): [2057.7,2058.0],[2069.56,2069.76],[2157.5,2159.15]"
		attribute VAR_SIZE = "6"
		attribute VAR_SI_CONVERSION = "0.0;1.66054E1;mol m-2"
		attribute VAR_UNITS = "Zmolec cm-2"
		attribute VAR_VALID_MAX = 153.559998
		attribute VAR_VALID_MIN = 113.149002
		vdata "" class "SDSVar": fields SDS variable; 0 records
	attribute DS_NAME = "Langerock;Bavo"
	attribute DS_EMAIL = "bavo.langerock@bira-iasb.oma.be"
	attribute DS_ADDRESS = "Ringlaan 3;B-1180 Brussels;BELGIUM"
	attribute DS_AFFILIATION = "Royal Belgian Institute for Space Aeronomy;BIRA.IASB"
	attribute FILE_ACCESS = "NDACC"
	attribute FILE_PROJECT_ID = ""
	attribute FILE_DOI = ""
	attribute FILE_ASSOCIATION = "NDACC"
	attribute DATA_DISCIPLINE = "ATMOSPHERIC.CHEMISTRY;REMOTE.SENSING;GROUNDBASED"
	attribute DATA_GROUP = "EXPERIMENTAL;PROFILE.STATIONARY"
	attribute DATA_DESCRIPTION = "FTIR CO vmr vertical profile data"
	attribute DATA_MODIFICATIONS = ""
	attribute DATA_CAVEATS = ""
	attribute DATA_RULES_OF_USE = "Please contact the PI."
	attribute DATA_ACKNOWLEDGEMENT = "The data are provided by the Royal Belgian Institute for Space Aeronomy, and have been acquired with national (BELSPO) funding."
	attribute DATA_VARIABLES = "DATETIME;LATITUDE.INSTRUMENT;LONGITUDE.INSTRUMENT;ALTITUDE.INSTRUMENT;SURFACE.PRESSURE_INDEPENDENT;SURFACE.TEMPERATURE_INDEPENDENT;ALTITUDE;ALTITUDE.BOUNDARIES;PRESSURE_INDEPENDENT;TEMPERATURE_INDEPENDENT;INTEGRATION.TIME;CO.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR;CO.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR_APRIORI;CO.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR_AVK;CO.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR_UNCERTAINTY.RANDOM.COVARIANCE;CO.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR_UNCERTAINTY.SYSTEMATIC.COVARIANCE;CO.COLUMN.PARTIAL_ABSORPTION.SOLAR;CO.COLUMN.PARTIAL_ABSORPTION.SOLAR_APRIORI;CO.COLUMN_ABSORPTION.SOLAR;CO.COLUMN_ABSORPTION.SOLAR_APRIORI;CO.COLUMN_ABSORPTION.SOLAR_AVK;CO.COLUMN_ABSORPTION.SOLAR_UNCERTAINTY.RANDOM.STANDARD;CO.COLUMN_ABSORPTION.SOLAR_UNCERTAINTY.SYSTEMATIC.STANDARD;ANGLE.SOLAR_ZENITH.ASTRONOMICAL;ANGLE.SOLAR_AZIMUTH;H2O.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR;H2O.COLUMN_ABSORPTION.SOLAR"
	attribute DATA_PROCESSOR = "SFIT4 1.0.20"
	attribute DATA_TEMPLATE = "GEOMS-TE-FTIR-002"
	attribute FILE_META_VERSION = "04R081;CUSTOM"
	attribute PI_NAME = "Zhou;Minqiang"
	attribute PI_EMAIL = "minqiang.zhou@mail.iap.ac.cn"
	attribute PI_ADDRESS = "40 Huayanli, Chaoyang;100029 Beijing;CHINA"
	attribute PI_AFFILIATION = "Chinese Academy of Sciences - Institute of Atmospheric Physics;CAS.IAP"
	attribute DATA_LOCATION = "XIANGHE"
	attribute DO_NAME = "Zhou;Minqiang"
	attribute DO_EMAIL = "minqiang.zhou@mail.iap.ac.cn"
	attribute DO_ADDRESS = "40 Huayanli, Chaoyang;100029 Beijing;CHINA"
	attribute DO_AFFILIATION = "Chinese Academy of Sciences - Institute of Atmospheric Physics;CAS.IAP"
	attribute DATA_SOURCE = "FTIR.CO_CAS.IAP001"
	attribute DATA_QUALITY = "RD"
	attribute DATA_FILE_VERSION = "001"
	attribute DATA_START_DATE = "20260706T022521Z"
	attribute DATA_STOP_DATE = "20260709T080249Z"
	attribute FILE_NAME = "groundbased_ftir.co_cas.iap001_xianghe_20260706t022521z_20260709t080249z_001.hdf"
	attribute FILE_GENERATION_DATE = "20260720T144416Z"