The UZAC99 TTAAii Data Designators decode as: T1 (U): Upper air data T1T2 (UZ): Upper level pressure, temperature, humidity and wind from a sonde released by carrier balloon or aircraft (Parts A, B, C, D) A1A2 (AC): Arctic(Remarks from Volume-C: CAMPAGNE DATA FROM ARCTIC FLYOVER ESTIMATED AUG 05 - SEP 15, 2022)

The USDL40 TTAAii Data Designators decode as: T1 (U): Upper air data T1T2 (US): Upper level pressure, temperature, humidity and wind (Part A) A1A2 (DL): Germany (The bulletin collects reports from stations: 10962;Hohenpeißenberg;) (Remarks from Volume-C: XXX)

The IUKD01 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IU): Upper air T1T2A1 (IUK): Radio soundings from fixed land stations (up to 100 hPa) A2 (D): 90°E - 0° northern hemisphere(The bulletin collects reports from stations: 10035;Schleswig;) (Remarks from Volume-C: high resolution 2 sec.)

The IUKD10 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IU): Upper air T1T2A1 (IUK): Radio soundings from fixed land stations (up to 100 hPa) A2 (D): 90°E - 0° northern hemisphere(The bulletin collects reports from stations: 26435;SKRIVERI;)

The IUSX01 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IU): Upper air T1T2A1 (IUS): Radio soundings from marine stations (entire sounding) A2 (X): Global Area (area not definable) (Remarks from Volume-C: TEMP SHIP COMPLETE SOUNDING)

The IUSD06 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IU): Upper air T1T2A1 (IUS): Radiosondes/pibal reports from fixed land stations (entire sounding) A2 (D): 90°E - 0° northern hemisphere(The bulletin collects reports from stations: 10548;Meiningen;) (Remarks from Volume-C: high resolution 2 sec.)

The UZDL99 TTAAii Data Designators decode as: T1 (U): Upper air data T1T2 (UZ): Upper level pressure, temperature, humidity and wind from a sonde released by carrier balloon or aircraft (Parts A, B, C, D) A1A2 (DL): Germany (Remarks from Volume-C: CAMPAGNE DATA FROM BARBADOS ESTIMATED JAN 20 - FEB 17, 2020)

The IUSD03 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IU): Upper air T1T2A1 (IUS): Radiosondes/pibal reports from fixed land stations (entire sounding) A2 (D): 90°E - 0° northern hemisphere(The bulletin collects reports from stations: 10184;Greifswald;) (Remarks from Volume-C: high resolution 2 sec.)

The IUSI01 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IU): Upper air T1T2A1 (IUS): Radiosondes/pibal reports from fixed land stations (entire sounding) A2 (I): 0° - 90°W southern hemisphere (The bulletin collects reports from stations: 89002;GEORG VON NEUMAYER;) (Remarks from Volume-C: COMPLETE SOUNDING)

The IUSD09 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IU): Upper air T1T2A1 (IUS): Radiosondes/pibal reports from fixed land stations (entire sounding) A2 (D): 90°E - 0° northern hemisphere(The bulletin collects reports from stations: 10962;Hohenpeißenberg;) (Remarks from Volume-C: high resolution 2 sec.,if available)