4621=GEOGCS["Fort Marigot",DATUM["Fort_Marigot",SPHEROID["International 1924",6378388,297],TOWGS84[151.613,253.832,-429.084,-0.0506,0.0958,-0.5974,-0.3971]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4621"]]