The HHXK50 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HH): Height A1 (X): Global Area (area not definable) A2 (K): 72 hours forecast T1ii (H50): 500 hPa (Remarks from Volume-C: H+ 72 (GLOBAL MODEL) HEIGHT 500 HPA)

The HHXF50 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HH): Height A1 (X): Global Area (area not definable) A2 (F): 30 hours forecast T1ii (H50): 500 hPa (Remarks from Volume-C: H+ 30 (GLOBAL MODEL) HEIGHT 500 HPA)

The PTOF50 TTAAii Data Designators decode as: T1 (P): Pictorial information (Binary coded) T1T2 (PT): Temperature A2 (F): 30 hours forecast T1ii (P50): 500 hPa (Remarks from Volume-C: H+12, H+18, H+24, H+30 500 hPa H + T, MSL pressure)

The PHNA50 TTAAii Data Designators decode as: T1 (P): Pictorial information (Binary coded) T1T2 (PH): Height A1 (N): Northern hemisphere A2 (A): Analysis (00 hour) T1ii (P50): 500 hPa (Remarks from Volume-C: GEOPOTENTIAL HIGHT (gpdam))

The HOXC50 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HO): Vertical velocity A1 (X): Global Area (area not definable) A2 (C): 12 hours forecast T1ii (H50): 500 hPa (Remarks from Volume-C: H+ 12 (GLOBAL MODEL) VERTICAL VELOCITY 500 HPA)

The HUXS50 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HU): Eastward wind component A1 (X): Global Area (area not definable) A2 (S): 168 hours forecast T1ii (H50): 500 hPa (Remarks from Volume-C: H+ 168 (GLOBAL MODEL) WIND COMPONENT 500 HPA)

The HUXB50 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 (H50): 500 hPa (Remarks from Volume-C: H+ 06 (GLOBAL MODEL) WIND COMPONENT 500 HPA)

The HTXI50 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 (H50): 500 hPa (Remarks from Volume-C: H+ 48 (GLOBAL MODEL) TEMPERATURE 500 HPA)

The HUXD50 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HU): Eastward wind component A1 (X): Global Area (area not definable) A2 (D): 18 hours forecast T1ii (H50): 500 hPa (Remarks from Volume-C: H+ 18 (GLOBAL MODEL) WIND COMPONENT 500 HPA)

The HTXC50 TTAAii Data Designators decode as: T1 (H): Grid point information (GRIB) T1T2 (HT): Temperature A1 (X): Global Area (area not definable) A2 (C): 12 hours forecast T1ii (H50): 500 hPa (Remarks from Volume-C: H+ 12 (GLOBAL MODEL) TEMPERATURE 500 HPA)