The HRXE50 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HR): Relative humidity A1 (X): Global Area (area not definable) A2 (E): 24 hours forecast T1ii (H50): 500 hPa (Remarks from Volume-C: H+ 24 (GLOBAL MODEL) RELATIVE HUMIDITY 500 HPA)

The HRXA85 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HR): Relative humidity A1 (X): Global Area (area not definable) A2 (A): Analysis (00 hour) T1ii (H85): 850 hPa (Remarks from Volume-C: H+ 00 (GLOBAL MODEL) RELATIVE HUMIDITY 850 HPA)

The HTXG40 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HT): Temperature A1 (X): Global Area (area not definable) A2 (G): 36 hours forecast T1ii (H40): 400 hPa (Remarks from Volume-C: H+ 36 (GLOBAL MODEL) TEMPERATURE 400 HPA)

The HTXQ70 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HT): Temperature A1 (X): Global Area (area not definable) A2 (Q): 144 hours forecast T1ii (H70): 700 hPa (Remarks from Volume-C: H+ 144 (GLOBAL MODEL) TEMPERATURE 700 HPA)

The HVXF50 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HV): Northward wind component A1 (X): Global Area (area not definable) A2 (F): 30 hours forecast T1ii (H50): 500 hPa (Remarks from Volume-C: H+ 30 (GLOBAL MODEL) WIND COMPONENT 500 HPA)

The HVXR70 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HV): Northward wind component A1 (X): Global Area (area not definable) A2 (R): 156 hours forecast (7 days) T1ii (H70): 700 hPa (Remarks from Volume-C: H+ 156 (GLOBAL MODEL) WIND COMPONENT 700 HPA)

The HGXO70 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HG): Divergence A1 (X): Global Area (area not definable) A2 (O): 120 hours forecast (5 days) T1ii (H70): 700 hPa (Remarks from Volume-C: H+ 120 (GLOBAL MODEL) DIVERGENCE 700 HPA)

The HHXJ30 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HH): Height A1 (X): Global Area (area not definable) A2 (J): 60 hours forecast T1ii (H30): 300 hPa (Remarks from Volume-C: H+ 60 (GLOBAL MODEL) HEIGHT 300 HPA)

The HUXL60 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HU): Eastward wind component A1 (X): Global Area (area not definable) A2 (L): 84 hours forecast T1ii (H60): 600 hPa (Remarks from Volume-C: H+ 84 (GLOBAL MODEL) WIND COMPONENT 600 HPA)

The HPXP89 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HP): Pressure A1 (X): Global Area (area not definable) A2 (P): 132 hours forecast T1ii (H89): Any parameter reduced to sea level (eg MSLP) (Remarks from Volume-C: H+ 132 (GLOBAL MODEL) MEAN SEA LEVEL PRESSURE)