{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"GeodeticReferenceFrame","name":"Not specified (based on Average Terrestrial System 1977 ellipsoid)","ellipsoid":{"name":"Average Terrestrial System 1977","semi_major_axis":6378135,"inverse_flattening":298.257},"scope":"Not a valid datum.","area":"Not specified.","bbox":{"south_latitude":-90,"west_longitude":-180,"north_latitude":90,"east_longitude":180},"id":{"authority":"EPSG","code":6041}}