{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"VerticalCRS","name":"Sule Skerry height","datum":{"type":"VerticalReferenceFrame","name":"Sule Skerry"},"coordinate_system":{"subtype":"vertical","axis":[{"name":"Gravity-related height","abbreviation":"H","direction":"up","unit":"metre"}]},"scope":"Geodesy, engineering survey.","area":"United Kingdom (UK) - Great Britain - Scotland - Sule Skerry onshore.","bbox":{"south_latitude":59.05,"west_longitude":-4.5,"north_latitude":59.13,"east_longitude":-4.3},"id":{"authority":"EPSG","code":5744}}