Topographic mapping.
Replaced Accra datum (code 6168) from 1978. Coordinates at Leigon fundamental point defined as Accra datum values for that point.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Leigon", "ellipsoid": { "name": "Clarke 1880 (RGS)", "semi_major_axis": 6378249.145, "inverse_flattening": 293.465 }, "scope": "Topographic mapping.", "area": "Ghana - onshore and offshore.", "bbox": { "south_latitude": 1.4, "west_longitude": -3.79, "north_latitude": 11.16, "east_longitude": 2.1 }, "id": { "authority": "EPSG", "code": 6250 } }