The HGXK92 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HG): Divergence A1 (X): Global Area (area not definable) A2 (K): 72 hours forecast T1ii (H92): 925 hPa (Remarks from Volume-C: H+ 72 (GLOBAL MODEL) DIVERGENCE 925 HPA)

The HGXK25 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HG): Divergence A1 (X): Global Area (area not definable) A2 (K): 72 hours forecast T1ii (H25): 250 hPa (Remarks from Volume-C: H+ 72 (GLOBAL MODEL) DIVERGENCE 250 HPA)

The HGXQ92 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HG): Divergence A1 (X): Global Area (area not definable) A2 (Q): 144 hours forecast T1ii (H92): 925 hPa (Remarks from Volume-C: H+ 144 (GLOBAL MODEL) DIVERGENCE 925 HPA)

The HGXQ70 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HG): Divergence A1 (X): Global Area (area not definable) A2 (Q): 144 hours forecast T1ii (H70): 700 hPa (Remarks from Volume-C: H+ 144 (GLOBAL MODEL) DIVERGENCE 700 HPA)

The HGXW92 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HG): Divergence A1 (X): Global Area (area not definable) A2 (W): Not assigned T1ii (H92): 925 hPa (Remarks from Volume-C: H+ 54 (GLOBAL MODEL) DIVERGENCE 925 HPA)

The HGXA92 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 (H92): 925 hPa (Remarks from Volume-C: H+ 00 (GLOBAL MODEL) DIVERGENCE 925 HPA)

The HGXW25 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HG): Divergence A1 (X): Global Area (area not definable) A2 (W): Not assigned T1ii (H25): 250 hPa (Remarks from Volume-C: H+ 54 (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 HGXS70 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HG): Divergence A1 (X): Global Area (area not definable) A2 (S): 168 hours forecast T1ii (H70): 700 hPa (Remarks from Volume-C: H+ 168 (GLOBAL MODEL) DIVERGENCE 700 HPA)

The HGXQ25 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HG): Divergence A1 (X): Global Area (area not definable) A2 (Q): 144 hours forecast T1ii (H25): 250 hPa (Remarks from Volume-C: H+ 144 (GLOBAL MODEL) DIVERGENCE 250 HPA)