{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"VerticalCRS","name":"NGC 1948 height","datum":{"type":"VerticalReferenceFrame","name":"Nivellement General de la Corse 1948"},"coordinate_system":{"subtype":"vertical","axis":[{"name":"Gravity-related height","abbreviation":"H","direction":"up","unit":"metre"}]},"scope":"Geodesy, engineering survey.","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":5791}}