| Octet No. | Contents |
|---|---|
| 15 | Shape of the Earth (See Code Table 3.2) |
| 16 | Scale factor of radius of spherical Earth |
| 17-20 | Scaled value of radius of spherical Earth |
| 21 | Scale factor of major axis of oblate spheroid Earth |
| 22-25 | Scaled value of major axis of oblate spheroid Earth |
| 26 | Scale factor of minor axis of oblate spheroid Earth |
| 27-30 | Scaled value of minor axis of oblate spheroid Earth |
| 31-(Nx4x2) | Ordered list of latitude/Longitude pairs for each grid point. The list of numbers are integer values of the valid latitudes in micro degrees (scale by 106). Each integer value is represented in 4 octets and general regulations 92.1.7 and 92.1.8 |