Processing Record for this file:
(Make notes here unique for this file)

Loading 2015-04-01 - 2015-05-01
Data loaded from DMF.  Files detarred, dezipped and names restored

Processed SO2 data normally.  These data are taken with a ~10-s time constant on the instrument. 

Ambient data appear reliable.  There is a time lag after the standard additions where a slight signal shows up as the calibration line flushes out.  

2015-04-09 00:00:00, 2015-04-11 23:59:59 DQR: D150527.1 Standard addition turned off (or ran out).  Data unaffected.