Jan 5, 2004 Final stage of reprocessing Umkehr data using FAP03 algorithm. RT - retrieved (using Umkehr Dobson C-pair retrieval algorithm UMKV8) OBS - observed Umkehr measurements (so-called N-values) SZA - solar zenith znagle Description of files: STN014-Tateno STN035-Arosa STN067-Boulder 'ap' means a priori ozone profile for UMKV8 algorithm, based on NASA Climatology 'ap92" is the a priori of the UMK92 algorithm (Mateer and DeLuisi, 1992) Format of the AP file DD MM YY TO_OB LO3(12:0) 1 8 57 279.0 0.1042 0.3372 0.9891 2.9847 9.7834 25.9466 52.5572 74.3062 60.6886 25.8584 11.3458 13.8404 23.6888 DD is day MM is month YY is year TO_OB is observed total ozone (TO) LO3(10:1) is 100*ozone amount (DU*100) in Umkehr layers 10, 9,...1 (layer 1 is a double layer 0+1)