2,ALTITUDE.INSTRUMENT,CONSTANT,m,REAL,Inst. geolocation. Altitude of the instrument relative to the location site,x
2,LATITUDE.INSTRUMENT,CONSTANT,deg,REAL,Inst. geolocation. Latitude north (decimal degrees) of the location of the instrument (+ for north; - for south),x
2,LONGITUDE.INSTRUMENT,CONSTANT,deg,REAL,Inst. geolocation. Longitude east (decimal degrees) of the location of the instrument (+ for east; - for west),x
2,INTERNAL.INSTRUMENT.TEMPERATURE,DATETIME,degC,REAL,Internal temperature sensor,x
2,ANGLE.SOLAR_ZENITH.ASTRONOMICAL,DATETIME,deg,REAL,The solar astronomical zenith angle at which the measurement was taken,x
2,AIR.MASS,DATETIME,1,REAL,Optical air mass,x
2,AEROSOL.OPTICAL.DEPTH,DATETIME;WAVELENGTH,1,REAL,Aerosol optical depth at corrisponding wavelength,x
2,H2O.COLUMN_ABSORPTION.SOLAR,DATETIME,cm,REAL,Total column water vapor at 940 nm,o
2,AEROSOL.ANGSTROM.EXPONENT_WAVELENGTH.INDEX,AEROSOL.ANGSTROM.EXPONENT_WAVELENGTH.INDEX,Index of number of wavelength pairs considered for the AEROSOL.ANGSTROM.EXPONENT calculation,x
2,AEROSOL.ANGSTROM.EXPONENT_WAVELENGTH.PAIR,AEROSOL.ANGSTROM.EXPONENT_WAVELENGTH.INDEX;INDEPENDENT,Boundaries of the range of wavelengths used for the calculation of AEROSOL.ANGSTROM.EXPONENT. The algorithm uses all wavelengths listed in WAVELENGTH variable, comprised in this range,x
2,AEROSOL.ANGSTROM.EXPONENT,DATETIME;AEROSOL.ANGSTROM.EXPONENT_WAVELENGTH.INDEX,Aerosol Angstrom exponent retrieved using the wavelengths range specified by the variable AEROSOL.ANGSTROM.EXPONENT_WAVELENGTH.PAIR,x
2.SOURCE.PRODUCT,INDEPENDENT,[empty],STRING,Information relevant to the source history of the Metadata and Data,o