{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"VerticalCRS","name":"Nelson 1955 height","datum":{"type":"VerticalReferenceFrame","name":"Nelson 1955"},"coordinate_system":{"subtype":"vertical","axis":[{"name":"Gravity-related height","abbreviation":"H","direction":"up","unit":"metre"}]},"scope":"Geodesy, engineering survey, topographic mapping.","area":"New Zealand - South Island - north of approximately 42°20'S - Nelson vertical CRS area.","bbox":{"south_latitude":-42.44,"west_longitude":171.82,"north_latitude":-40.44,"east_longitude":174.46},"id":{"authority":"EPSG","code":5766}}