{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"VerticalReferenceFrame","name":"Cagliari 1956","scope":"Geodesy, engineering survey, topographic mapping.","area":"Italy - Sardinia onshore.","bbox":{"south_latitude":38.82,"west_longitude":8.08,"north_latitude":41.31,"east_longitude":9.89},"id":{"authority":"EPSG","code":1307}}