AB_CSRS.DAC
This gridded difference file AB_CSRS.DAC will need to be renamed to AB_CSRS.gsb to run in some software suites. Formats identical, but AB file is provincial fit only. Can be taken as an approximate transformation NAD83 to WGS 84 - see code 1702.
Geodetic Control Section; Land and Forest Svc; Alberta Environment; http://www3.gov.ab.ca/env/land/dos/
2005-09-29
Geodesy.
See CRS code 4269 for recommended coordinate axis representation for the human interface.
Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: dec deg