4724=GEOGCS["Diego Garcia 1969",DATUM["Diego_Garcia_1969",SPHEROID["International 1924",6378388,297],TOWGS84[208,-435,-229,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4724"]]