EPSG
Eurogeographics, http://crs.bkg.bund.de/crs-eu/
2004-03-09
Geodesy, engineering survey, topographic mapping.
Orthometric heights.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalReferenceFrame", "name": "Cascais", "scope": "Geodesy, engineering survey, topographic mapping.", "area": "Portugal - mainland - onshore.", "bbox": { "south_latitude": 36.95, "west_longitude": -9.56, "north_latitude": 42.16, "east_longitude": -6.19 }, "id": { "authority": "EPSG", "code": 5178 } }