TWP/MPLCMASK/C1 - Reprocess: Backscatter signals not set to missing when beam blocked
The backscatter signals are flagged as missing when the beam is blocked. For the historical data, this functionality was not implemented (when the VAP uses MPL as input). This flag is not very reliable since it is based on the signal strength during the beam blocked conditions.
Look for weak signals for 4 hours around noon to detect beam blocked conditions.