Processing Record for this file: (Make notes here unique for this file) Loading 3/1 - 4/1/2014 Data loaded directly from DMF Processed CO data normally. Data appear normal and acceptable. Standard additions show minimal variation over the month, except for the first three days (due to changes in the manifold flow). However, between 14-03-30 03:18 and 14-03-30 22:49, the Ambient Temperature sensor showed a pronounced (and unreal) negative excursion. for reasons that have not been explained This did not appear to affect the ambient CO measurements, but it did cause a disruption of the N2O and H2O signals. Following this time, the N2O and H2O signals should be viewed with some scepticism.