{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"ProjectedCRS","name":"PRS92 / Philippines zone 4","base_crs":{"type":"GeographicCRS","name":"PRS92","datum":{"type":"GeodeticReferenceFrame","name":"Philippine Reference System 1992","ellipsoid":{"name":"Clarke 1866","semi_major_axis":6378206.4,"semi_minor_axis":6356583.8}},"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":4683},"remarks":"Replaces Luzon 19111 (CRS code 4253)."},"conversion":{"name":"Philippines zone IV","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":123,"unit":"degree","id":{"authority":"EPSG","code":8802}},{"name":"Scale factor at natural origin","value":0.99995,"unit":"unity","id":{"authority":"EPSG","code":8805}},{"name":"False easting","value":500000,"unit":"metre","id":{"authority":"EPSG","code":8806}},{"name":"False northing","value":0,"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"}]},"scope":"Engineering survey, topographic mapping.","area":"Philippines - approximately between 122°E and 124°E onshore and offshore - southeast Luzon (east of 122°E); Tablas; Masbate; Panay; Cebu; Negros; west Mindanao (west of 122°E).","bbox":{"south_latitude":3.44,"west_longitude":121.74,"north_latitude":22.18,"east_longitude":124.29},"id":{"authority":"EPSG","code":3124}}