EPSG
Conseil National de l'Information Geographique groupe de travail "Reseaux de Nivellement" recommendations v5.1 April 1994.
2012-01-21
Geodesy, engineering survey, topographic mapping.
Uses Normal heights. Replaces NGC (datum code 5189).
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalReferenceFrame", "name": "Nivellement General de la France - IGN78", "scope": "Geodesy, engineering survey, topographic mapping.", "area": "France - Corsica onshore.", "bbox": { "south_latitude": 41.31, "west_longitude": 8.5, "north_latitude": 43.07, "east_longitude": 9.63 }, "id": { "authority": "EPSG", "code": 5120 } }