| Octet No. | Contents | 
    
      | 10 
 | Parameter category (see Code 
Table 4.1) 
 | 
    
      | 11 
 | Parameter number (see Code Table
4.2) 
 | 
    
      | 12 
 | Type of generating process (see
Code Table 4.3) 
 | 
    
      | 13 
 | Number of radar sites used 
 | 
    
      | 14 
 | Indicator of unit time range 
 | 
    
      | 15-18 
 | Site latitude (in 10-6
degree) 
 | 
    
      | 19-22 
 | Site longitude (in 10-6
degree) | 
    
      | 23-24 
 | Site elevation (metres) | 
    
      | 25-28 
 | Site ID (alphanumeric) | 
    
      | 29-30 
 | Site ID (numeric) 
 | 
    
      | 31 
 | Operating mode (see Code Table 4.12) 
 | 
    
      | 32 
 | Reflectivity calibration
constant (tenths of dB) 
 | 
    
      | 33 
 | Quality control indicator (see
Code Table 4.13) 
 | 
    
      | 34 
 | Clutter filter indicator (see
Code Table 4.14) 
 | 
    
      | 35 
 | Constant antenna elevation angle
(tenths of degree true) 
 | 
    
      | 36-37 
 | Accumulation interval (minutes) 
 | 
    
      | 38 
 | Reference reflectivity for echo
top (dB) 
 | 
    
      | 39-41 
 | Range bin spacing (metres) 
 | 
    
      | 42-43 
 | Radial angular spacing (tenths
of degree true) 
 |