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{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"BoundCRS","source_crs":{"type":"ProjectedCRS","name":"S-JTSK (Ferro) / Krovak","base_crs":{"type":"GeographicCRS","name":"S-JTSK (Ferro)","datum":{"type":"GeodeticReferenceFrame","name":"System of the Unified Trigonometrical Cadastral Network (Ferro)","ellipsoid":{"name":"Bessel 1841","semi_major_axis":6377397.155,"inverse_flattening":299.1528128},"prime_meridian":{"name":"Ferro","longitude":-17.6666666666667}},"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":4818}},"conversion":{"name":"Krovak","method":{"name":"Krovak","id":{"authority":"EPSG","code":9819}},"parameters":[{"name":"Latitude of projection centre","value":49.5,"unit":"degree","id":{"authority":"EPSG","code":8811}},{"name":"Longitude of origin","value":42.5,"unit":"degree","id":{"authority":"EPSG","code":8833}},{"name":"Co-latitude of cone axis","value":30.2881397527778,"unit":"degree","id":{"authority":"EPSG","code":1036}},{"name":"Latitude of pseudo standard parallel","value":78.5,"unit":"degree","id":{"authority":"EPSG","code":8818}},{"name":"Scale factor on pseudo standard parallel","value":0.9999,"unit":"unity","id":{"authority":"EPSG","code":8819}},{"name":"False easting","value":0,"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":"Southing","abbreviation":"X","direction":"south","unit":"metre"},{"name":"Westing","abbreviation":"Y","direction":"west","unit":"metre"}]},"id":{"authority":"EPSG","code":2065}},"target_crs":{"type":"GeographicCRS","name":"S-JTSK","datum":{"type":"GeodeticReferenceFrame","name":"System of the Unified Trigonometrical Cadastral Network","ellipsoid":{"name":"Bessel 1841","semi_major_axis":6377397.155,"inverse_flattening":299.1528128}},"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":4156},"remarks":"Greenwich-referenced equivalent to S-JTSK (CRS code 4818). Technically improved and replaced through S-JTSK [JTSK03] in Slovakia, CRS code 8351. Remains the legal system in Czechia but see scientific working system CRSs 5228 and 5229."},"transformation":{"name":"S-JTSK (Ferro) to S-JTSK (1)","source_crs":{"type":"GeographicCRS","name":"S-JTSK (Ferro) (with Greenwich prime meridian)","datum":{"type":"GeodeticReferenceFrame","name":"System of the Unified Trigonometrical Cadastral Network (Ferro) (with Greenwich prime meridian)","ellipsoid":{"name":"Bessel 1841","semi_major_axis":6377397.155,"inverse_flattening":299.1528128}},"coordinate_system":{"subtype":"ellipsoidal","axis":[{"name":"Geodetic latitude","abbreviation":"Lat","direction":"north","unit":"degree"},{"name":"Geodetic longitude","abbreviation":"Lon","direction":"east","unit":"degree"}]}},"method":{"name":"Longitude rotation","id":{"authority":"EPSG","code":9601}},"parameters":[{"name":"Longitude offset","value":-63600.0000000001,"unit":{"type":"Unit","name":"","conversion_factor":1},"id":{"authority":"EPSG","code":8602}}],"id":{"authority":"EPSG","code":1884}}}