DA_SCAN_OBS_RAIN
DA_READ_OBS_BUFRAIRS
DA_READ_OBS_BUFRATMS
DA_READ_OBS_BUFRIASI
DA_READ_OBS_BUFRSEVIRI
DA_READ_OBS_BUFRSSMIS
DA_READ_OBS_BUFRTOVS
DA_READ_OBS_FY3
DA_READ_OBS_HDF5AMSR2