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Method: NTv2
Grid Files: CQ77NA83.GSB
Remarks: Replaces NAD27(CGQ77) to NAD83 (1) (code 1451). Can be taken as approx transformation to WGS 84 - see code 1691.
Information source: Geodetic Service of Quebec.
Revision date: 2021-11-04
Unit: degree
Geodetic CRS: NAD27(CGQ77)
Datum: North American Datum 1927 (CGQ77)
Ellipsoid: Clarke 1866
Prime meridian: Greenwich
Data source: EPSG
Information source: OGP
Revision date: 2002-11-22
Scope: Geodesy.
Remarks: See CRS code 4609 for recommended coordinate axis representation for the human interface.
Area of use: Canada - Quebec.
Coordinate system: Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: dec deg
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