{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"DynamicGeodeticReferenceFrame","name":"European Terrestrial Reference Frame 1991","frame_reference_epoch":1989,"ellipsoid":{"name":"GRS 1980","semi_major_axis":6378137,"inverse_flattening":298.257222101},"scope":"Geodesy.","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":"EPSG","code":1180}}