{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"BoundCRS","source_crs":{"type":"ProjectedCRS","name":"Datum 73 / Modified Portuguese Grid","base_crs":{"type":"GeographicCRS","name":"Datum 73","datum":{"type":"GeodeticReferenceFrame","name":"Datum 73","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":4274}},"conversion":{"name":"Modified Portuguese Grid","method":{"name":"Transverse Mercator","id":{"authority":"EPSG","code":9807}},"parameters":[{"name":"Latitude of natural origin","value":39.6666666666667,"unit":"degree","id":{"authority":"EPSG","code":8801}},{"name":"Longitude of natural origin","value":-8.13190611111111,"unit":"degree","id":{"authority":"EPSG","code":8802}},{"name":"Scale factor at natural origin","value":1,"unit":"unity","id":{"authority":"EPSG","code":8805}},{"name":"False easting","value":180.598,"unit":"metre","id":{"authority":"EPSG","code":8806}},{"name":"False northing","value":-86.99,"unit":"metre","id":{"authority":"EPSG","code":8807}}]},"coordinate_system":{"subtype":"Cartesian","axis":[{"name":"Northing","abbreviation":"X","direction":"north","unit":"metre"},{"name":"Easting","abbreviation":"Y","direction":"east","unit":"metre"}]},"id":{"authority":"EPSG","code":27492}},"target_crs":{"type":"GeographicCRS","name":"ETRS89-PRT [1995]","datum":{"type":"GeodeticReferenceFrame","name":"ETRS89-PRT [1995]","anchor_epoch":1995.4,"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":11108},"remarks":"Horizontal component of national realization of ETRS89 in continental Portugal."},"transformation":{"name":"Datum 73 to ETRS89-PRT [1995] (6)","method":{"name":"NTv2","id":{"authority":"EPSG","code":9615}},"parameters":[{"name":"Latitude and longitude difference file","value":"D73_ETRS89_geo.gsb","id":{"authority":"EPSG","code":8656}}],"id":{"authority":"EPSG","code":11577}}}