The UAHU61 TTAAii Data Designators decode as: T1 (U): Upper air data T1T2 (UA): Aircraft reports A1A2 (HU): Hungary T1T2ii (UA61): Special aircraft reports, except for volcanic ash (Remarks from Volume-C: NilReason)
The SPHU31 TTAAii Data Designators decode as: T1 (S): Surface data T1T2 (SP): Special aviation weather reports A1A2 (HU): Hungary (Remarks from Volume-C: NilReason)
The LPHU31 TTAAii Data Designators decode as: T1 (L): Aviation Information in XML A1A2 (HU): Hungary T1T2 (LP): Special Aviation weather reports("SPECI") (Remarks from Volume-C: NilReason)