Those data taken before I moved the ribbon cable from the 0-15 slot to the 16-31 slot still have to use the old data base ~/DB/20110217, and data taken after I moved the cable today, should use a new map of pion rejectors.
PS: I checked those PMTs which show only pedestal in their plots in data we took, and found that actually they have signals by viewing from a scope that connected to cables from upstairs patch panel or from downstairs patch panel. It looks like the PMTs are OK, as well as the connection from PMTs to downstairs patch panels. We will do further check on the connection from patch panel to fast bus ADC tomorrow.