{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"GeographicCRS","name":"MML07-IRF","datum":{"type":"GeodeticReferenceFrame","name":"MML07 Intermediate Reference Frame","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"}]},"scope":"Engineering survey and topographic mapping for railway applications.","area":"United Kingdom (UK) - on or related to the Midland Mainline rail route from Sheffield to London.","bbox":{"south_latitude":51.46,"west_longitude":-1.89,"north_latitude":53.42,"east_longitude":0.16},"id":{"authority":"EPSG","code":9372},"remarks":"Intermediate CRS created in 2020 to assist the emulation of the ETRS89 / MML07 SnakeGrid projected CRS (code 9373) through transformation ETRS89 to MML07-IRF (1) (code 9369) used in conjunction with the MML07-TM map projection (code 9370)."}