{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"BoundCRS","source_crs":{"type":"ProjectedCRS","name":"Nord Sahara 1959 / Nord Algerie","base_crs":{"type":"GeographicCRS","name":"Nord Sahara 1959","datum":{"type":"GeodeticReferenceFrame","name":"Nord Sahara 1959","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"}]},"id":{"authority":"EPSG","code":4307},"remarks":"Sometimes incorrectly referred to as Voirol Unifie 1960: this is NOT a GeogCRS but two projected CRSs based on Nord Sahara 1959 (codes 30791-92). Strictly applicable only to north of 32°N but extended southwards non-homogoneously by oil industry."},"conversion":{"name":"Nord Algerie","method":{"name":"Lambert Conic Conformal (1SP)","id":{"authority":"EPSG","code":9801}},"parameters":[{"name":"Latitude of natural origin","value":40,"unit":{"type":"AngularUnit","name":"grad","conversion_factor":0.0157079632679489},"id":{"authority":"EPSG","code":8801}},{"name":"Longitude of natural origin","value":3,"unit":{"type":"AngularUnit","name":"grad","conversion_factor":0.0157079632679489},"id":{"authority":"EPSG","code":8802}},{"name":"Scale factor at natural origin","value":0.999625544,"unit":"unity","id":{"authority":"EPSG","code":8805}},{"name":"False easting","value":500135,"unit":"metre","id":{"authority":"EPSG","code":8806}},{"name":"False northing","value":300090,"unit":"metre","id":{"authority":"EPSG","code":8807}}]},"coordinate_system":{"subtype":"Cartesian","axis":[{"name":"Easting","abbreviation":"X","direction":"east","unit":"metre"},{"name":"Northing","abbreviation":"Y","direction":"north","unit":"metre"}]},"id":{"authority":"EPSG","code":30791}},"target_crs":{"type":"GeographicCRS","name":"WGS 84","datum_ensemble":{"name":"World Geodetic System 1984 ensemble","members":[{"name":"World Geodetic System 1984 (Transit)","id":{"authority":"EPSG","code":1166}},{"name":"World Geodetic System 1984 (G730)","id":{"authority":"EPSG","code":1152}},{"name":"World Geodetic System 1984 (G873)","id":{"authority":"EPSG","code":1153}},{"name":"World Geodetic System 1984 (G1150)","id":{"authority":"EPSG","code":1154}},{"name":"World Geodetic System 1984 (G1674)","id":{"authority":"EPSG","code":1155}},{"name":"World Geodetic System 1984 (G1762)","id":{"authority":"EPSG","code":1156}},{"name":"World Geodetic System 1984 (G2139)","id":{"authority":"EPSG","code":1309}},{"name":"World Geodetic System 1984 (G2296)","id":{"authority":"EPSG","code":1383}}],"ellipsoid":{"name":"WGS 84","semi_major_axis":6378137,"inverse_flattening":298.257223563},"accuracy":"2.0","id":{"authority":"EPSG","code":6326}},"coordinate_system":{"subtype":"ellipsoidal","axis":[{"name":"Geodetic latitude","abbreviation":"Lat","direction":"north","unit":"degree"},{"name":"Geodetic longitude","abbreviation":"Lon","direction":"east","unit":"degree"}]},"id":{"authority":"EPSG","code":4326}},"transformation":{"name":"Transformation from unknown to WGS84","method":{"name":"Position Vector transformation (geog2D domain)","id":{"authority":"EPSG","code":9606}},"parameters":[{"name":"X-axis translation","value":-152.9,"unit":"metre","id":{"authority":"EPSG","code":8605}},{"name":"Y-axis translation","value":43.8,"unit":"metre","id":{"authority":"EPSG","code":8606}},{"name":"Z-axis translation","value":358.3,"unit":"metre","id":{"authority":"EPSG","code":8607}},{"name":"X-axis rotation","value":2.714,"unit":{"type":"AngularUnit","name":"arc-second","conversion_factor":4.84813681109536e-06},"id":{"authority":"EPSG","code":8608}},{"name":"Y-axis rotation","value":1.386,"unit":{"type":"AngularUnit","name":"arc-second","conversion_factor":4.84813681109536e-06},"id":{"authority":"EPSG","code":8609}},{"name":"Z-axis rotation","value":-2.788,"unit":{"type":"AngularUnit","name":"arc-second","conversion_factor":4.84813681109536e-06},"id":{"authority":"EPSG","code":8610}},{"name":"Scale difference","value":-6.743,"unit":{"type":"ScaleUnit","name":"parts per million","conversion_factor":1e-06},"id":{"authority":"EPSG","code":8611}}]}}