{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"VerticalCRS","name":"Macao height","datum":{"type":"VerticalReferenceFrame","name":"Macao Height Datum"},"coordinate_system":{"subtype":"vertical","axis":[{"name":"Gravity-related height","abbreviation":"H","direction":"up","unit":"metre"}]},"scope":"Geodesy, engineering survey, topographic mapping.","area":"Macao - onshore and offshore.","bbox":{"south_latitude":22.06,"west_longitude":113.52,"north_latitude":22.23,"east_longitude":113.68},"id":{"authority":"EPSG","code":8434}}