Grid 5: Polar stereographic
Grids
| Octets | Key | Type | Content |
| 7-8 | Nx | unsigned | Nx number of points along x-axis |
| 9-10 | Ny | unsigned | Ny number of points along y-axis |
| 11-13 | latitudeOfFirstGridPoint | signed | La1 latitude of first grid point |
| 14-16 | longitudeOfFirstGridPoint | signed | Lo1 longitude of first grid point |
| 17 | resolutionAndComponentFlags | codeflag | Resolution and component flags (see Code table 7) |
| 18-20 | orientationOfTheGrid | signed | LoV orientation of the grid; i.e. the longitude value of the meridian which is parallel to the y-axis (or columns of the grid) along which latitude increases as the Y-coordinate increases (the orientation longitude may or may not appear on a particular grid) |
| 21-23 | DxInMetres | unsigned | Dx X-direction grid length (see Note (2)) |
| 24-26 | DyInMetres | unsigned | Dy Y-direction grid length (see Note (2)) |
| 27 | projectionCenterFlag | unsigned | Projection centre flag (see Note (5)) |
| 28 | scanningMode | codeflag | Scanning mode (flags see Flag/Code table 8) |
| 29-32 | Set to zero (reserved) |
( 1) Latitude and longitude are in millidegrees (thousandths of a degree).
( 2) Grid lengths are in units of metres, at the 60-degree parallel nearest to the pole on the projection plane.
( 3) Latitude values are limited to the range 0–90 000; bit 1 is set to 1 to indicate south latitude.
( 4) Latitude and longitude are in millidegrees (thousandths of a degree).
( 5) Octet 27 (projection centre flag):
Latitude and longitude are in millidegrees (thousandths of a degree).
bit 1 set to 1 if South Pole is on the projection plane
(to be set up as flag table).
( 6) Where items are not given, the appropriate octet(s) should have all bits set to 1.
( 7) See Note (11) under Grid definition — latitude/longitude grid (or equidistant cylindrical, or Plate Carrée) — page I.2 – Bi — 8.
( 8) The resolution flag (bit 1 of Code table 7) is not applicable.