The IUCX01 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IU): Upper air T1T2A1 (IUC): (used for single level satellite-derived reports – see Note 3) A2 (X): Global Area (area not definable) (The bulletin collects reports from stations: EDMO;) (Remarks from Volume-C: GOME_O3, METOPB, DLR)