{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"VerticalCRS","name":"Yellow Sea","datum":{"type":"VerticalReferenceFrame","name":"Yellow Sea 1956"},"coordinate_system":{"subtype":"vertical","axis":[{"name":"Gravity-related height","abbreviation":"H","direction":"up","unit":"metre"}]},"scope":"Geodesy, engineering survey.","area":"China - onshore and offshore.","bbox":{"south_latitude":16.7,"west_longitude":73.62,"north_latitude":53.56,"east_longitude":134.77},"id":{"authority":"EPSG","code":5704}}