The HHXH30 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 (H30): 300 hPa (Remarks from Volume-C: H+ 42 (GLOBAL MODEL) HEIGHT 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 HTXI30 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HT): Temperature A1 (X): Global Area (area not definable) A2 (I): 48 hours forecast T1ii (H30): 300 hPa (Remarks from Volume-C: H+ 48 (GLOBAL MODEL) TEMERATURE 300 HPA)

The HVXX30 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 (H30): 300 hPa (Remarks from Volume-C: H+ 66 (GLOBAL MODEL) WIND COMPONENT 300 HPA)

The HTXD30 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 (H30): 300 hPa (Remarks from Volume-C: H+ 18 (GLOBAL MODEL) TEMERATURE 300 HPA)

The HUXB30 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HU): Eastward wind component A1 (X): Global Area (area not definable) A2 (B): 6 hours forecast T1ii (H30): 300 hPa (Remarks from Volume-C: H+ 06 (GLOBAL MODEL) WIND COMPONENT 300 HPA)

The HHXM30 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HH): Height A1 (X): Global Area (area not definable) A2 (M): 96 hours forecast T1ii (H30): 300 hPa (Remarks from Volume-C: H+ 96 (GLOBAL MODEL) HEIGHT 300 HPA)

The HVXH30 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 (H30): 300 hPa (Remarks from Volume-C: H+ 42 (GLOBAL MODEL) WIND COMPONENT 300 HPA)

The HUXN30 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HU): Eastward wind component A1 (X): Global Area (area not definable) A2 (N): 108 hours forecast T1ii (H30): 300 hPa (Remarks from Volume-C: H+ 108 (GLOBAL MODEL) WIND COMPONENT 300 HPA)

The HHXA30 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HH): Height A1 (X): Global Area (area not definable) A2 (A): Analysis (00 hour) T1ii (H30): 300 hPa (Remarks from Volume-C: H+ 00 (GLOBAL MODEL) HEIGHT 300 HPA)