| Octet No. | Contents |
|---|---|
| 12-15 | Reference value (R) (IEEE 32-bit floating-point value) |
| 16-17 | Binary scale factor (E) |
| 18-19 | Decimal scale factor (D) |
| 20 | Number of bits used for each
packed value for simple packing, or for each group reference value for
complex packing or spatial differencing |
| 21 | Type of original field values (see Code Table 5.1) |
| Note: Negative values of E or D shall be represented according to Regulation 92.1.5. |