ce50701f_GLAH12_Data_Dictionary__description
[Label] d_IsRngFst [Datatype (Dimensions)] DOUBLE (UNLIMITED) [long_name (standard_name)] Ice Sheet Range Offset using first peak (NOT_SET) [units] meters [source] Rel 34 GLAS Binary Data [coordinates] DS_UTCTime_40 [description] 
Range offset to be added to d_refRng to calculate ice sheet specific range from centroid of first peak in standard gaussian fit.
GLAH12 Data Dictionary