The HHXF30 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HH): Height A1 (X): Global Area (area not definable) A2 (F): 30 hours forecast T1ii (H30): 300 hPa (Remarks from Volume-C: H+ 30 (GLOBAL MODEL) HEIGHT 300 HPA)

The HHXS50 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HH): Height A1 (X): Global Area (area not definable) A2 (S): 168 hours forecast T1ii (H50): 500 hPa (Remarks from Volume-C: H+ 168 (GLOBAL MODEL) HEIGHT 500 HPA)

The HHXJ70 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 (H70): 700 hPa (Remarks from Volume-C: H+ 60 (GLOBAL MODEL) HEIGHT 700 HPA)

The HTXR85 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HT): Temperature A1 (X): Global Area (area not definable) A2 (R): 156 hours forecast (7 days) T1ii (H85): 850 hPa (Remarks from Volume-C: H+ 156 (GLOBAL MODEL) TEMPERATURE 850 HPA)

The HHXX40 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HH): Height A1 (X): Global Area (area not definable) A2 (X): Not assigned T1ii (H40): 400 hPa (Remarks from Volume-C: H+ 66 (GLOBAL MODEL) HEIGHT 400 HPA)

The HTXD10 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HT): Temperature A1 (X): Global Area (area not definable) A2 (D): 18 hours forecast T1ii (H10): 100 hPa (Remarks from Volume-C: H+ 18 (GLOBAL MODEL) TEMPERATURE 100 HPA)

The HHXN30 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HH): Height A1 (X): Global Area (area not definable) A2 (N): 108 hours forecast T1ii (H30): 300 hPa (Remarks from Volume-C: H+ 108 (GLOBAL MODEL) HEIGHT 300 HPA)

The HTXQ85 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 (H85): 850 hPa (Remarks from Volume-C: H+ 144 (GLOBAL MODEL) TEMPERATURE 850 HPA)

The HPXO89 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HP): Pressure A1 (X): Global Area (area not definable) A2 (O): 120 hours forecast (5 days) T1ii (H89): Any parameter reduced to sea level (eg MSLP) (Remarks from Volume-C: H+ 120 (GLOBAL MODEL) MEAN SEA LEVEL PRESSURE)

The HHXL70 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HH): Height A1 (X): Global Area (area not definable) A2 (L): 84 hours forecast T1ii (H70): 700 hPa (Remarks from Volume-C: H+ 84 (GLOBAL MODEL) HEIGHT 700 HPA)