PROJCS["RGF93_CC50",GEOGCS["GCS_RGF93",DATUM["D_RGF_1993",SPHEROID["GRS_1980",6378137,298.257222101]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["standard_parallel_1",49.25],PARAMETER["standard_parallel_2",50.75],PARAMETER["latitude_of_origin",50],PARAMETER["central_meridian",3],PARAMETER["false_easting",1700000],PARAMETER["false_northing",9200000],UNIT["Meter",1]]