The HHXH25 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HH): Height A1 (X): Global Area (area not definable) A2 (H): 42 hours forecast T1ii (H25): 250 hPa (Remarks from Volume-C: H+ 42 (GLOBAL MODEL) HEIGHT 250 HPA)

The HHXB25 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HH): Height A1 (X): Global Area (area not definable) A2 (B): 6 hours forecast T1ii (H25): 250 hPa (Remarks from Volume-C: H+ 06 (GLOBAL MODEL) HEIGHT 250 HPA)

The HVXN25 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HV): Northward wind component A1 (X): Global Area (area not definable) A2 (N): 108 hours forecast T1ii (H25): 250 hPa (Remarks from Volume-C: H+ 108 (GLOBAL MODEL) WIND COMPONENT 250 HPA)

The HTXL25 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HT): Temperature A1 (X): Global Area (area not definable) A2 (L): 84 hours forecast T1ii (H25): 250 hPa (Remarks from Volume-C: H+ 84 (GLOBAL MODEL) TEMPERATURE 250 HPA)

The HHXX25 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 (H25): 250 hPa (Remarks from Volume-C: H+ 66 (GLOBAL MODEL) HEIGHT 250 HPA)

The HVXF25 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 (H25): 250 hPa (Remarks from Volume-C: H+ 30 (GLOBAL MODEL) WIND COMPONENT 250 HPA)

The HUXW25 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HU): Eastward wind component A1 (X): Global Area (area not definable) A2 (W): Not assigned T1ii (H25): 250 hPa (Remarks from Volume-C: H+ 54 (GLOBAL MODEL) WIND COMPONENT 250 HPA)

The HVXX25 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HV): Northward wind component A1 (X): Global Area (area not definable) A2 (X): Not assigned T1ii (H25): 250 hPa (Remarks from Volume-C: H+ 66 (GLOBAL MODEL) WIND COMPONENT 250 HPA)

The HUXJ25 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HU): Eastward wind component A1 (X): Global Area (area not definable) A2 (J): 60 hours forecast T1ii (H25): 250 hPa (Remarks from Volume-C: H+ 60 (GLOBAL MODEL) WIND COMPONENT 250 HPA)

The HGXO25 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 (H25): 250 hPa (Remarks from Volume-C: H+ 120 (GLOBAL MODEL) DIVERGENCE 250 HPA)