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  • ---- The UZPQ01 TTAAii Data Designator 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 (PQ): Western North Pacific (Remarks from Volume-C: TEMP DROP FROM AIRCRAFT WHEN AVAILABLE)