netcdf clouds { types: byte enum cloud_t {Clear = 0, Cumulonimbus = 1, Stratus = 2, Stratocumulus = 3, Cumulus = 4, Altostratus = 5, Nimbostratus = 6, Altocumulus = 7, Missing = 127} ; dimensions: time = UNLIMITED ; // (5 currently) variables: cloud_t primary_cloud(time) ; cloud_t primary_cloud:_FillValue = Missing ; data: primary_cloud = Clear, Stratus, Cumulus, _, Cumulonimbus ; }