2,WAVELENGTH,[CONSTANT|WAVELENGTH],nm,REAL,Wavelength (Can be a vector if retrieval is made at different wavelengths. Then all retrieved variables have an additional wavelength dependence.),x
2,ANGLE.SOLAR_ZENITH.ASTRONOMICAL,DATETIME,deg,REAL,The solar astronomical zenith angle at which the measurement was taken,x
2,ANGLE.SOLAR_AZIMUTH,DATETIME,deg,REAL,The solar azimuth angle at which the measurement was taken using north as the reference plane and increasing clockwise (0 for north
2,ANGLE.VIEW_AZIMUTH,DATETIME,deg,REAL,The azimuth viewing direction of the instrument using north as the reference plane and increasing clockwise (0 for north
2,ANGLE.VIEW_ZENITH,DATETIME,deg,REAL,The zenith viewing direction of the instrument,x