ce50701f_GLAH12_Data_Dictionary__description
[Label] d_isRngOff [Datatype (Dimensions)] DOUBLE (UNLIMITED) [long_name (standard_name)] Ice Sheet Range Offset (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 the range using the algorithm deemed appropriate for ice sheets.
GLAH12 Data Dictionary