| Number (In Section 4, octet 11)  | 
      Parameter | Units | 
      Abbrev | 
|---|---|---|---|
| 0 | 
      Seconds Prior To Initial Reference Time (Defined In Section 1) | 
      s | 
      IRTSEC | 
    
| 1 | 
      Meridional Overturning Stream Function | 
      m3 s-1 | 
      MOSF | 
    
| 2 | Reserved | ||
| 3 | Days Since Last Observation | d | DSLOBSO | 
| 4 | Barotropic Stream Function | m3 s-1 | 
      BARDSF | 
| 5-191 | 
      Reserved | ||
| 192-254 | 
      Reserved for Local Use | 
      ||
| 255 | 
      Missing |