| Octet No. | 
      Contents | 
    
    
      10
  | 
      Parameter category (see Code table 4.1)
  | 
    
    
      11
  | 
      Parameter number (see Code table 4.2)
  | 
    
    
      12
  | 
      Tile classification (see Code table 4.242)
  | 
    
    
      13-14
  | 
      Type of Tile (see Code table 4.252)
  | 
    
    
      | 15 | 
      Number of used spatial tiles
  | 
    
    
      16
  | 
      Number of used tile attribute combinations for type of tile
  | 
    
    
      17
  | 
      Number of used tile attributes for tile attribute combination (NUTAFTAC)
  | 
    
    
      
  | 
      Repeat the following octet for each attribute of tile (n=1,NUTAFTAC)
  | 
    
    
      18 + (n-1)
  | 
      Attribute of tile (see Code table 4.241)
  | 
    
    
      
  | 
      End of repitition
  | 
    
    
      19 + (NUTAFTAC-1)
  | 
      Total number of tile attribute combinations
  | 
    
    
      20 + (NUTAFTAC-1)
  | 
      Tile index
  | 
    
    
      21 + (NUTAFTAC-1) - 36 + (NUTAFTAC-1) 
  | 
      UUID of data group
  | 
    
    
      37 + (NUTAFTAC-1)
  | 
      Type of generating process
  | 
    
    
      38 + (NUTAFTAC-1)
  | 
      Background process
  | 
    
    
      39 + (NUTAFTAC-1)
  | 
      Generating process identifier
  | 
    
    
      40 + (NUTAFTAC-1) - 41 + (NUTAFTAC-1)
  | 
      Hours after data cut-off
  | 
    
    
      42 + (NUTAFTAC-1)
  | 
      Minutes after data cut-off
  | 
    
    
      43 + (NUTAFTAC-1)
  | 
      Indicator of unit of time range (see Code table 4.4)
  | 
    
    
      44 + (NUTAFTAC-1) - 47 + (NUTAFTAC-1)
  | 
      Forecast time
  | 
    
    
      48 + (NUTAFTAC-1)
  | 
      Type of first fixed surface (see Code table 4.5)
  | 
    
    
      49 + (NUTAFTAC-1)
  | 
      Scale factor of first surface | 
    
    
      50 + (NUTAFTAC-1) - 53 + (NUTAFTAC-1)
  | 
      Scaled value of first surface | 
    
    
      54 + (NUTAFTAC-1)
  | 
      Type of second fixed surface (see Code table 4.5)
  | 
    
    
      55 + (NUTAFTAC-1)
  | 
      Scale factor of second surface | 
    
    
      56 + (NUTAFTAC-1) - 59 + (NUTAFTAC-1)
  | 
      Scaled value of second surface |