Section 3 - Flag Table 3 : Resolution and Component Flags
Flag Tables for Section 3
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| Bit | Value | Meaning |
| 1-2 | Reserved | |
| 3 | 0 | i direction increments not given |
| 3 | 1 | i direction increments given |
| 4 | 0 | j direction increments not given |
| 4 | 1 | j direction increments given |
| 5 | 0 | Resolved u- and v- components of vector quantities relative to easterly and northerly directions |
| 5 | 1 | Resolved u- and v- components of vector quantities relative to the defined grid in the direction of increasing x and y (or i and j) coordinates respectively |
| 6-8 | Reserved - set to zero |