I noticed that the PD offset nulling script for PRMI did not run for some reason. I looked into the script and found that this was due to too-many PD channels requested to tdsavg at once. So I modified the script so that it divides the PDs into a number of group. This seems running OK at a expense of the processing time. The modified script is named as lsc/h1/scripts/pdOffsetNull_ver2.py. I also checked this script into the svn.