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Message ID: 1411     Entry time: Fri Mar 20 11:01:02 2009
Author: steve 
Type: Update 
Category: PEM 
Subject: particle counts are high 

The outside particle counts for 0.5 micron are 3 million this morning at 9am. Low clouds, foggy condition with low inversion layer.

This makes the 40m lab 30-50K

I just turned on the HEPA filter at the PSL enclosure.

Please, leave it on high


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