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Loading 2015-01-01 - 2015-02-01
Data loaded from detarred, dezipped files from the DMF

To reduce Operator need for frequent filter changes, dilution turned on @ 14-02-21 21:12.  Every 24-h, the dilution is turned off for 5 minutes.  This was not long enough to get an undiluted sample.  Dilution operational at ~0.5 until ~ 2015-02-07 when the Pentras drier died.  

As always, data not reported for T(blue) < 0.7

Impactor in place, operational and signals are correct polarity.  As cofirmation, the flow signal decreases slightly when the impactor is in the 1-um state.  

Some evidence of supermicron particles.  A number of local events resulting in high absorbance.  These were not edited.

Multiple power outages this month.  These are not logged numerically so there is no way to reconcile the outage periods to the data output.  

D150308.1
2015-01-23 00:00, 2015-02-01 00:00  Periods when the flow through the impactor is abnormal and the instrument signal is unacceptably noisy and clearly spurious.  It is surmised there was a flow distrubance, but there was no Operator record of events.  This period also corresponds with the failure of the Pentras drier.  Repeated restarts MAY have affected the instrument output.