{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"GeodeticReferenceFrame","name":"Chatham Islands Datum 1979","ellipsoid":{"name":"International 1924","semi_major_axis":6378388,"inverse_flattening":297},"scope":"Geodesy, engineering survey, topographic mapping.","area":"New Zealand - Chatham Islands group - onshore.","bbox":{"south_latitude":-44.64,"west_longitude":-177.25,"north_latitude":-43.3,"east_longitude":-175.54},"id":{"authority":"EPSG","code":6673}}