The HGXC25 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HG): Divergence A1 (X): Global Area (area not definable) A2 (C): 12 hours forecast T1ii (H25): 250 hPa (Remarks from Volume-C: H+ 12 (GLOBAL MODEL) DIVERGENCE 250 HPA)
The HGXD25 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HG): Divergence A1 (X): Global Area (area not definable) A2 (D): 18 hours forecast T1ii (H25): 250 hPa (Remarks from Volume-C: H+ 18 (GLOBAL MODEL) DIVERGENCE 250 HPA)
The HGXX92 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HG): Divergence A1 (X): Global Area (area not definable) A2 (X): Not assigned T1ii (H92): 925 hPa (Remarks from Volume-C: H+ 66 (GLOBAL MODEL) DIVERGENCE 925 HPA)
The HGXB25 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HG): Divergence A1 (X): Global Area (area not definable) A2 (B): 6 hours forecast T1ii (H25): 250 hPa (Remarks from Volume-C: H+ 06 (GLOBAL MODEL) DIVERGENCE 250 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 HGXM92 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HG): Divergence A1 (X): Global Area (area not definable) A2 (M): 96 hours forecast T1ii (H92): 925 hPa (Remarks from Volume-C: H+ 96 (GLOBAL MODEL) DIVERGENCE 925 HPA)
The HGXA25 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HG): Divergence A1 (X): Global Area (area not definable) A2 (A): Analysis (00 hour) T1ii (H25): 250 hPa (Remarks from Volume-C: H+ 00 (GLOBAL MODEL) DIVERGENCE 250 HPA)
The HGXB70 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HG): Divergence A1 (X): Global Area (area not definable) A2 (B): 6 hours forecast T1ii (H70): 700 hPa (Remarks from Volume-C: H+ 06 (GLOBAL MODEL) DIVERGENCE 700 HPA)
The HGXG92 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HG): Divergence A1 (X): Global Area (area not definable) A2 (G): 36 hours forecast T1ii (H92): 925 hPa (Remarks from Volume-C: H+ 36 (GLOBAL MODEL) DIVERGENCE 925 HPA)
The HGXH92 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HG): Divergence A1 (X): Global Area (area not definable) A2 (H): 42 hours forecast T1ii (H92): 925 hPa (Remarks from Volume-C: H+ 42 (GLOBAL MODEL) DIVERGENCE 925 HPA)