{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"CompoundCRS","name":"RGF93 geographiques (dms) et NGF-IGN 1978","components":[{"type":"GeographicCRS","name":"RGF93 geographiques (dms)","datum":{"type":"GeodeticReferenceFrame","name":"Reseau Geodesique Francais 1993 v1","anchor_epoch":1993,"ellipsoid":{"name":"GRS 1980","semi_major_axis":6378137,"inverse_flattening":298.257222101}},"coordinate_system":{"subtype":"ellipsoidal","axis":[{"name":"Geodetic longitude","abbreviation":"Lon","direction":"east","unit":"degree"},{"name":"Geodetic latitude","abbreviation":"Lat","direction":"north","unit":"degree"}]}},{"type":"VerticalCRS","name":"NGF-IGN 1978","datum":{"type":"VerticalReferenceFrame","name":"NGF-IGN 1978"},"coordinate_system":{"subtype":"vertical","axis":[{"name":"Gravity-related height","abbreviation":"H","direction":"up","unit":"metre"}]}}],"scope":"LOCALE A CARACTERE LEGAL","area":"CORSE","bbox":{"south_latitude":41.2,"west_longitude":8,"north_latitude":43.5,"east_longitude":10},"id":{"authority":"IGNF","code":"RGF93G.IGN78C"}}