{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"GeographicCRS","name":"Unspecified datum based upon the International 1924 Authalic Sphere","datum":{"type":"GeodeticReferenceFrame","name":"Not specified (based on International 1924 Authalic Sphere)","ellipsoid":{"name":"International 1924 Authalic Sphere","radius":6371228}},"coordinate_system":{"subtype":"ellipsoidal","axis":[{"name":"Geodetic latitude","abbreviation":"Lat","direction":"north","unit":"degree"},{"name":"Geodetic longitude","abbreviation":"Lon","direction":"east","unit":"degree"}]},"scope":"Statistical analysis.","area":"Not specified.","bbox":{"south_latitude":-90,"west_longitude":-180,"north_latitude":90,"east_longitude":180},"id":{"authority":"EPSG","code":4053},"remarks":"Use only in cases where geodetic datum is unknown."}