{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"VerticalReferenceFrame","name":"PDO Height Datum 1993","scope":"Oil and gas exploration.","area":"Oman - onshore. Includes Musandam and the Kuria Muria (Al Hallaniyah) islands.","bbox":{"south_latitude":16.59,"west_longitude":51.99,"north_latitude":26.58,"east_longitude":59.91},"id":{"authority":"EPSG","code":5123}}