I replaced the fuse in the breakout box for dust monitor 7 in the LVEA (near the previous location of the H2 electronics racks). It had turned off at what looks like around January 22, 2012 12:00 UTC (from a plot of H0:PEM-LVEA_DST7_MODE).

I turned off the dust monitor at location 1 in the LVEA, which had previously been sampling the enclosure around ISCT4, as it was sitting on the floor without an isokinetic probe attached. It has probably been running without one since ISCT4 was removed. I would not use its data since then.

Attached are plots of dust counts > .5 microns.