The HVXD98 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HV): Northward wind component A1 (X): Global Area (area not definable) A2 (D): 18 hours forecast T1ii (H98): Air priorities for the Earth's surface (Remarks from Volume-C: H+ 18 (GLOBAL MODEL) WIND COMPONENT 10 METRES)

The HVXK50 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HV): Northward wind component A1 (X): Global Area (area not definable) A2 (K): 72 hours forecast T1ii (H50): 500 hPa (Remarks from Volume-C: H+ 72 (GLOBAL MODEL) WIND COMPONENT 500 HPA)

The HVXA40 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 (H40): 400 hPa (Remarks from Volume-C: H+ 00 (GLOBAL MODEL) WIND COMPONENT 400 HPA)

The HVXA50 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 (H50): 500 hPa (Remarks from Volume-C: H+ 00 (GLOBAL MODEL) WIND COMPONENT 500 HPA)

The HVXI50 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 (H50): 500 hPa (Remarks from Volume-C: H+ 48 (GLOBAL MODEL) WIND COMPONENT 500 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 HVXF98 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 (H98): Air priorities for the Earth's surface (Remarks from Volume-C: H+ 30 (GLOBAL MODEL) WIND COMPONENT 10 METRES)

The HVXX92 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 (H92): 925 hPa (Remarks from Volume-C: H+ 66 (GLOBAL MODEL) WIND COMPONENT 925 HPA)

The HVXH98 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HV): Northward wind component A1 (X): Global Area (area not definable) A2 (H): 42 hours forecast T1ii (H98): Air priorities for the Earth's surface (Remarks from Volume-C: H+ 42 (GLOBAL MODEL) WIND COMPONENT 10 METRES)

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)