The HUXD30 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HU): Eastward wind component A1 (X): Global Area (area not definable) A2 (D): 18 hours forecast T1ii (H30): 300 hPa (Remarks from Volume-C: H+ 18 (GLOBAL MODEL) WIND COMPONENT 300 HPA)

The HHXG30 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HH): Height A1 (X): Global Area (area not definable) A2 (G): 36 hours forecast T1ii (H30): 300 hPa (Remarks from Volume-C: H+ 36 (GLOBAL MODEL) HEIGHT 300 HPA)

The HUXO30 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HU): Eastward wind component A1 (X): Global Area (area not definable) A2 (O): 120 hours forecast (5 days) T1ii (H30): 300 hPa (Remarks from Volume-C: H+ 120 (GLOBAL MODEL) WIND COMPONENT 300 HPA)

The HRXB30 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HR): Relative humidity A1 (X): Global Area (area not definable) A2 (B): 6 hours forecast T1ii (H30): 300 hPa (Remarks from Volume-C: H+ 06 (GLOBAL MODEL) RELATIVE HUMIDITY 700 HPA)

The HRXG30 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HR): Relative humidity A1 (X): Global Area (area not definable) A2 (G): 36 hours forecast T1ii (H30): 300 hPa (Remarks from Volume-C: H+ 36 (GLOBAL MODEL) RELATIVE HUMIDITY 700 HPA)

The HVXI30 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HV): Northward wind component A1 (X): Global Area (area not definable) A2 (I): 48 hours forecast T1ii (H30): 300 hPa (Remarks from Volume-C: H+ 48 (GLOBAL MODEL) WIND COMPONENT 300 HPA)

The HUXK30 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HU): Eastward wind component A1 (X): Global Area (area not definable) A2 (K): 72 hours forecast T1ii (H30): 300 hPa (Remarks from Volume-C: H+ 72 (GLOBAL MODEL) WIND COMPONENT 300 HPA)

The HVXA30 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HV): Northward wind component A1 (X): Global Area (area not definable) A2 (A): Analysis (00 hour) T1ii (H30): 300 hPa (Remarks from Volume-C: H+ 00 (GLOBAL MODEL) WIND COMPONENT 300 HPA)

The PWZE30 TTAAii Data Designators decode as: T1 (P): Pictorial information (Binary coded) T1T2 (PW): Wind A2 (E): 24 hours forecast T1ii (P30): 300 hPa (Remarks from Volume-C: WAFS W+T H+24 FL 300 (ICAO D))

The HHXI30 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HH): Height A1 (X): Global Area (area not definable) A2 (I): 48 hours forecast T1ii (H30): 300 hPa (Remarks from Volume-C: H+ 48 (GLOBAL MODEL) HEIGHT 300 HPA)