{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"ProjectedCRS","name":"NAD27 / MTM zone 10","base_crs":{"type":"GeographicCRS","name":"NAD27","datum":{"type":"GeodeticReferenceFrame","name":"North American Datum 1927","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":4267},"remarks":"Note: this CRS includes longitudes which are POSITIVE EAST. Replaced by NAD27(76) (code 4608) in Ontario, CGQ77 (code 4609) in Quebec, Mexican Datum of 1993 (code 4483) in Mexico, NAD83 (code 4269) in Canada (excl. Ontario & Quebec) & USA."},"conversion":{"name":"MTM zone 10","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":-79.5,"unit":"degree","id":{"authority":"EPSG","code":8802}},{"name":"Scale factor at natural origin","value":0.9999,"unit":"unity","id":{"authority":"EPSG","code":8805}},{"name":"False easting","value":304800,"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":"Canada - Ontario - between 81°W and 78°W: south of 46°N in area to west of 80°15'W, south of 47°N in area between 80°15'W and 79°30'W, entire province between 79°30'W and 78°W.","bbox":{"south_latitude":42.26,"west_longitude":-81,"north_latitude":47.33,"east_longitude":-77.99},"id":{"authority":"EPSG","code":7991}}