The BLANKED ASSOCIATED ARRAY is an integer array of 0 or 1 indicating if the RY data should be flagged out (1) or not (0). The purpose is similar to the bad values in RY, except that the actual (non-bad) values are still available by default, and it is the choice of the user to apply the BLANKED flags or not1. The user can apply these flags to RY e.g. with the following command:
LAS> LET RY R%HEAD%SPE%BAD /WHERE R%ASSOC%BLANKED%DATA.EQ.1