{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"VerticalReferenceFrame","name":"St. Helena Vertical Datum 2015","scope":"Geodesy, engineering survey, topographic mapping.","area":"St Helena, Ascension and Tristan da Cunha - St Helena Island - onshore.","bbox":{"south_latitude":-16.08,"west_longitude":-5.85,"north_latitude":-15.85,"east_longitude":-5.59},"id":{"authority":"EPSG","code":1177}}