OSTN02_NTv2.gsb
Approximate alternative to official OSTN02 method (tfm code 7952). Accuracy at 2000 test points compared to OSTN02 (tfm code 1039): latitude 0.5mm av, 17mm max; longitude 0.8mm av, 23mm max. May be taken as approximate CT to WGS 84 - see code 5339.
Ordnance Survey of Great Britain, http://www.gps.gov.uk
2021-05-13
Geodesy.
See CRS code 4277 for recommended coordinate axis representation for the human interface.
Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: dec deg