Flags 11: Flag
Code tables
| Bit | Value | Meaning |
| 1 | 0 | Grid-point data |
| 1 | 1 | Spherical harmonic coefficients |
| 2 | 0 | Simple packing |
| 2 | 1 | Complex or second-order packing |
| 3 | 0 | Floating point values (in the original data) are represented |
| 3 | 1 | Integer values (in the original data) are represented |
| 4 | 0 | No additional flags at octet 14 |
| 4 | 1 | Octet 14 contains additional flag bits |
| 5 | 0 | Reserved set to zero |
| 6 | 0 | Single datum at each grid point |
| 6 | 1 | Matrix of values at each grid point |
| 7 | 0 | No secondary bit-maps |
| 7 | 1 | Secondary bit-maps present |
| 8 | 0 | Second-order values constant width |
| 8 | 1 | Second-order values different widths |
| 9-12 | Reserved for future use |
( 1) Bit 4 shall be set to 1 to indicate that bits 5 to 12 are contained in octet 14 of the Binary data section.
( 2) Bit 3 shall be set to 1 to indicate that the data represented are integer values; where integer values are Latitude and longitude are represented, any reference values, if not zero, should be rounded to integer before being applied.
( 3) Where secondary bit-maps are present in the data (used in association with second-order packing and, optionally, with a matrix of values at each point), this shall be indicated by setting bit 7 to 1.
( 4) The indicated meaning of bit 6 shall be retained in anticipation of the future reintroduction of a system to define a matrix of values at each grid point.