---- The bulletin collects SYNOP reports:FM 12 (SYNOP, Report of surface observation from a fixed land station).(Refer to WMO No.306 - Manual on Codes for the definition of WMO international codes)---- The SIAA21 TTAAii Data Designators decode (2) as:T1 (S): Surface data.T2 (I): Intermediate synoptic hour.A1A2 (AA): Antarctic.(2: Refer to WMO No.386 - Manual on the GTS - Attachment II.5)---- The bulletin collects reports from stations:Dumont d'urville

The FAYG31 TTAAii Data Designators decode as: T1 (F): Forecast T1T2 (FA): Aviation area /GAMET/advisories A1A2 (YG): Serbia

The FPOS54 TTAAii Data Designators decode as: T1 (F): Forecast T1T2 (FP): Public A1A2 (OS): Austria (Remarks from Volume-C: PUBLIC FORECAST/WESTERN ALPS)

The WSYG31 TTAAii Data Designators decode as: T1 (W): Warnings T1T2 (WS): SIGMET A1A2 (YG): Serbia

The WODL45 TTAAii Data Designators decode as: T1 (W): Warnings T1T2 (WO): Other A1A2 (DL): Germany (Remarks from Volume-C: STRONG WIND, GALE AND STORM WARNINGS FOR GERMAN BIGHT AND BALTIC SEA (IN GERMAN/ENGLISH))

The WAYG31 TTAAii Data Designators decode as: T1 (W): Warnings T1T2 (WA): AIRMET A1A2 (YG): Serbia

The WWDL20 TTAAii Data Designators decode as: T1 (W): Warnings T1T2 (WW): Warnings and weather summary A1A2 (DL): Germany (Remarks from Volume-C: STORM SURGE WARNING FOR THE GERMAN NORTH SEA COAST (IN GERMAN))