{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"BoundCRS","source_crs":{"type":"ProjectedCRS","name":"Tahiti 79 / UTM zone 6S","base_crs":{"type":"GeographicCRS","name":"Tahiti 79","datum":{"type":"GeodeticReferenceFrame","name":"Tahiti 79","ellipsoid":{"name":"International 1924","semi_major_axis":6378388,"inverse_flattening":297}},"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":4690},"remarks":"Replaces Tahiti 52 (CRS code 4628) in Tahiti. Replaced by RGPF (CRS code 4687)."},"conversion":{"name":"UTM zone 6S","method":{"name":"Transverse Mercator","id":{"authority":"EPSG","code":9807}},"parameters":[{"name":"Latitude of natural origin","value":0,"unit":"degree","id":{"authority":"EPSG","code":8801}},{"name":"Longitude of natural origin","value":-147,"unit":"degree","id":{"authority":"EPSG","code":8802}},{"name":"Scale factor at natural origin","value":0.9996,"unit":"unity","id":{"authority":"EPSG","code":8805}},{"name":"False easting","value":500000,"unit":"metre","id":{"authority":"EPSG","code":8806}},{"name":"False northing","value":10000000,"unit":"metre","id":{"authority":"EPSG","code":8807}}]},"coordinate_system":{"subtype":"Cartesian","axis":[{"name":"Easting","abbreviation":"E","direction":"east","unit":"metre"},{"name":"Northing","abbreviation":"N","direction":"north","unit":"metre"}]},"id":{"authority":"EPSG","code":3304}},"target_crs":{"type":"GeographicCRS","name":"RGPF","datum":{"type":"GeodeticReferenceFrame","name":"Reseau Geodesique de la Polynesie Francaise","ellipsoid":{"name":"GRS 1980","semi_major_axis":6378137,"inverse_flattening":298.257222101}},"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":4687},"remarks":"Replaces Tahaa 54 (CRS code 4629), IGN 63 Hiva Oa (4689), IGN 72 Nuku Hiva (4630), Maupiti 83 (4692), MHEFO 55 (4688), Moorea 87 (4691) and Tahiti 79 (4690)."},"transformation":{"name":"Tahiti 79 to RGPF (2)","method":{"name":"NTv2","id":{"authority":"EPSG","code":9615}},"parameters":[{"name":"Latitude and longitude difference file","value":"gr3dpf25.gsb","id":{"authority":"EPSG","code":8656}}],"id":{"authority":"EPSG","code":11433}}}