The ISGD86 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IS): Surface/sea level A2 (D): 90°E - 0° northern hemisphere
The ISHD38 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IS): Surface/sea level A2 (D): 90°E - 0° northern hemisphere (Remarks from Volume-C: NATIONAL AUTOMATIC SYNOP - NATIONAL PART)
The ISGD72 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IS): Surface/sea level A2 (D): 90°E - 0° northern hemisphere
The ISSK01 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 (K): 180° - 90°E southern hemisphere (Remarks from Volume-C: SHIP)
The ISAD37 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: NATIONAL AUTOMATIC SYNOP)
The ISSL01 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 (L): 90°E - 0° southern hemisphere (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 ISSB02 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 (B): 90°W - 180° northern hemisphere (Remarks from Volume-C: SHIP,VOS 3rd party data)
The IXXD42 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IX): Other data types A2 (D): 90°E - 0° northern hemisphere (Remarks from Volume-C: LIGHTNING REPORT)
The ISSH01 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 (H): 90°E - 0° tropical belt (Remarks from Volume-C: SHIP)