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Entry  Wed Apr 11 14:31:52 2012, Frank, DailyProgress, NoiseBudget, low frequency noise source 
    Reply  Thu Apr 12 13:58:17 2012, Frank, DailyProgress, NoiseBudget, low frequency noise source HEPA.png
Message ID: 908     Entry time: Wed Apr 11 14:31:52 2012     Reply to this: 910
Author: Frank 
Type: DailyProgress 
Category: NoiseBudget 
Subject: low frequency noise source 

i have identified part of the low frequency noise source from yesterdays measurement - air fluctuations. We still had the HEPA fans on maximum.

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