Derived at 4 stations. Accuracy 4m in each axis. Along with CTs 6974 and 6975, replaces SAD69 to WGS 84 (5) (code 1868). Also used as a CT from SAD69 to SIRGAS-Chile - see code 7449. Note: SAD69 adopted by Chile authorities only south of 43°30'S.
U.S. National Geospatial Intelligence Agency (NGA) Standard 0036 v1.0.0 of 2014-07-08.
See CRS code 4618 for recommended coordinate axis representation for the human interface.