{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"GeographicCRS","name":"Camacupa 1948","datum":{"type":"GeodeticReferenceFrame","name":"Camacupa 1948","ellipsoid":{"name":"Clarke 1880 (RGS)","semi_major_axis":6378249.145,"inverse_flattening":293.465}},"coordinate_system":{"subtype":"ellipsoidal","axis":[{"name":"Geodetic latitude","abbreviation":"Lat","direction":"north","unit":"degree"},{"name":"Geodetic longitude","abbreviation":"Lon","direction":"east","unit":"degree"}]},"scope":"Oil and gas exploration and production.","area":"Angola - Angola proper - onshore and offshore.","bbox":{"south_latitude":-18.02,"west_longitude":8.2,"north_latitude":-5.82,"east_longitude":24.09},"id":{"authority":"EPSG","code":4220},"remarks":"Provisional adjustment. Coastal stations used for offshore radio-navigation positioning and determination of transformations to WGS. Differs from second adjustment (Camacupa 2015, CRS code 8694), which is not used for offshore E&P, by up to 25m."}