Processing Record for this file: (Make notes here unique for this file) Loading from flight 140303a Data taken from NOx CPU c:\data\NOx Data in flight appear normal. Considerable pre/post flight data included in file (sorry). It has been observed that the NO/NO2 ratios do not appear reasonable at low levels (<500 pptv). The zero on the NO channel appears erroneously high. This affects both the NO and the NO2 results at low values. These data are only preliminary.