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User name Carlos
Log entry time 21:13:39 on October 23, 2010
Entry number 336374
keyword=HV change: block 119
Block 119 had very high HV (720V), result of an elastic calibration
without any signal on the block. After we fixed this block, we got too
much signal: runs 7809-7811.
I changed the HV to 500V after run 7811, rough average value of all other
blocks.
This means that this blocks have probably been dead from the beginning of
the experiment, not just the last 24h as I concluded before.