Processing Record for this file: (Make notes here unique for this file) Loading from flight 140909a Data taken from NOx CPU c:\data\NOx Data in flight appear normal. Plume is prominently apparent. It has been observed that the NO/NO2 ratios do not appear reasonable at low levels (<500 pptv). The NOx channel appears abnormally high with the photolysis lamp on or off. This affects only the NO2 channel. These data are only preliminary.