Today we installed 2 more accelerometers on the PSL table, one by where the water enters the high-power amplifier and the other by the PMC. We also removed the cover from the PMC. In addition we switched out the dust monitor which has been giving a calibration error message for some time (the 300 and 500 nm cutoffs may not be well calibrated).  And we put up some signage related to switching between commissioning and science mode.