{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"GeodeticReferenceFrame","name":"Not specified (based on Airy 1830 ellipsoid)","ellipsoid":{"name":"Airy 1830","semi_major_axis":6377563.396,"inverse_flattening":299.3249646},"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":6001}}