Plots of > .5 micron dust counts are attached. Notice the higher than usual counts in the H1 PSL enclosure (H0:PEM-LVEA_DST10_5).
The higher counts in the H1 PSL enclosure may be due to the fans being turned off. http://ilog.ligo-wa.caltech.edu/ilog/pub/ilog.cgi?group=detector&date_to_view=09/22/2011&anchor_to_scroll_to=2011:09:22:16:42:44-nicolas