{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"GeographicCRS","name":"Puerto Rico","datum":{"type":"GeodeticReferenceFrame","name":"Puerto Rico","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"}]},"scope":"Geodesy.","area":"Puerto Rico, US Virgin Islands and British Virgin Islands - onshore.","bbox":{"south_latitude":17.62,"west_longitude":-67.97,"north_latitude":18.78,"east_longitude":-64.25},"id":{"authority":"EPSG","code":4139},"remarks":"NAD27 (CRS code 4267) used for military purposes. Note: this CRS includes longitudes which are POSITIVE EAST."}