The ISAD30 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IS): Surface/sea level T1T2A1 (ISA): N-minute observations from automatic (fixed or mobile) land stations A2 (D): 90°E - 0° northern hemisphere (Remarks from Volume-C: NilReason)
The ISSX81 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IS): Surface/sea level T1T2A1 (ISS): Synoptic observations from marine stations A2 (X): Global Area (area not definable) (Remarks from Volume-C: SHIP)
The FQEN63 TTAAii Data Designators decode as: T1 (F): Forecast T1T2 (FQ): Other shipping A1A2 (EN): Northern Europe (Remarks from Volume-C: Nautical warnings NCC HAMBURG (IN GERMAN))
The ISSX21 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IS): Surface/sea level T1T2A1 (ISS): One-hour observations from automatic marine stations A2 (X): Global Area (area not definable) (Remarks from Volume-C: SHIP)
The FQEN64 TTAAii Data Designators decode as: T1 (F): Forecast T1T2 (FQ): Other shipping A1A2 (EN): Northern Europe (Remarks from Volume-C: Nautical warnings NCC HAMBURG (IN GERMAN))
The ISSX22 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IS): Surface/sea level T1T2A1 (ISS): One-hour observations from automatic marine stations A2 (X): Global Area (area not definable) (Remarks from Volume-C: SHIP)
The IUSN21 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IU): Upper air T1T2A1 (IUS): Radio soundings from mobile land stations (entire sounding) A2 (N): Northern hemisphere (Remarks from Volume-C: TeamX Campaign)
The ISAD88 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IS): Surface/sea level T1T2A1 (ISA): Routinely scheduled observations for distribution from automatic (fixed or mobile) land stations (e.g. 0000, 0100, … or 0220, 0240, 0300, …, or 0715, 0745, ... UTC) A2 (D): 90°E - 0° northern hemisphere (Remarks from Volume-C: NATIONAL AUTOMATIC SYNOP)
The ISSE02 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IS): Surface/sea level T1T2A1 (ISS): Synoptic observations from marine stations A2 (E): 0° - 90°W tropical belt (Remarks from Volume-C: SHIP,VOS 3rd party data)
The ISGD31 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IS): Surface/sea level A2 (D): 90°E - 0° northern hemisphere