{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"VerticalCRS","name":"IGLD 1985 height","datum":{"type":"VerticalReferenceFrame","name":"International Great Lakes Datum 1985"},"coordinate_system":{"subtype":"vertical","axis":[{"name":"Gravity-related height","abbreviation":"H","direction":"up","unit":"metre"}]},"scope":"Hydrology.","area":"Canada and United States (USA) - Great Lakes basin and St Lawrence Seaway.","bbox":{"south_latitude":40.99,"west_longitude":-93.17,"north_latitude":52.22,"east_longitude":-54.75},"id":{"authority":"EPSG","code":5609}}