Section 3 - Code Table 3 : Resolution and component flags
Code Tables for Section 3
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| Code | Meaning |
| 3 | i direction increments not given |
| 3 | i direction increments given |
| 4 | j direction increments not given |
| 4 | j direction increments given |
| 5 | Resolved u- and v- components of vector quantities relative to easterly and northerly directions |
| 5 | 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 |