{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"VerticalCRS","name":"ETRF97","datum":{"type":"VerticalReferenceFrame","name":"European_Terrestrial_Reference_Frame_1997"},"coordinate_system":{"subtype":"vertical","axis":[{"name":"Ellipsoidal height","abbreviation":"h","direction":"up","unit":"metre"}]},"scope":"Not known.","area":"Europe - onshore and offshore - ETRF extent - approximately 16°W to 33°E and 33°N to 84°N.","bbox":{"south_latitude":33.26,"west_longitude":-16.1,"north_latitude":84.73,"east_longitude":38.01},"id":{"authority":"ESRI","code":115828}}