IDMP:International Daylight Measurement Programme, Copyright©1997, CIE, Vienna
Evg : Global horizontal illuminance
Evg + (nesw) : Global horizontal and vertical north, east, south, west illuminance
Evgn : Global vertical north illuminance
Evge : Global vertical east illuminance
Evgs : Global vertical south illuminance
Evgw : Global vertical west illuminance
Evd : Diffuse horizontal illuminance
Evd+Eed : Diffuse horizontal illuminance and irradiance
Evg_nesw+Eeg_nesw : Global vertical (nesw) illuminance / Global vertical (nesw) irradiance
Eeg_nesw : Global vertical north, east, south, west irradiance
Evg_nesw : Global vertical north, east, south, west illuminance
Evs : Direct normal illuminance
Lvz : Zenith luminance Evg(nesw) : Global vertical north, east, south, west illuminance
Eeg : Global horizontal irradiance
Eeg + (nesw) : Global horizontal and vertical north, east, south, west irradiance
Eegn : Global vertical north irradiance
Eege : Global vertical east irradiance
Eegs : Global vertical south irradiance
Eegw : Global vertical west irradiance
Eed : Diffuse horizontal irradiance
Ees : Direct normal irradiance
Dbt_Rh : Dew point temperature / Relative humidity