BOUNDCRS[SOURCECRS[GEOGCRS["ATS77",DATUM["Average Terrestrial System 1977",ELLIPSOID["Average Terrestrial System 1977",6378135,298.257,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],CS[ellipsoidal,2],AXIS["geodetic latitude (Lat)",north,ORDER[1],ANGLEUNIT["degree",0.0174532925199433]],AXIS["geodetic longitude (Lon)",east,ORDER[2],ANGLEUNIT["degree",0.0174532925199433]],USAGE[SCOPE["Geodesy."],AREA["Canada - New Brunswick; Nova Scotia; Prince Edward Island."],BBOX[43.41,-69.05,48.07,-59.73]],ID["EPSG",4122]]],TARGETCRS[GEOGCRS["NAD83(CSRS)",DATUM["NAD83 Canadian Spatial Reference System",ELLIPSOID["GRS 1980",6378137,298.257222101,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],CS[ellipsoidal,2],AXIS["geodetic latitude (Lat)",north,ORDER[1],ANGLEUNIT["degree",0.0174532925199433]],AXIS["geodetic longitude (Lon)",east,ORDER[2],ANGLEUNIT["degree",0.0174532925199433]],USAGE[SCOPE["Horizontal component of 3D system."],AREA["Canada - onshore and offshore - Alberta; British Columbia; Manitoba; New Brunswick; Newfoundland and Labrador; Northwest Territories; Nova Scotia; Nunavut; Ontario; Prince Edward Island; Quebec; Saskatchewan; Yukon."],BBOX[38.21,-141.01,86.46,-40.73]],ID["EPSG",4617]]],ABRIDGEDTRANSFORMATION["ATS77 to NAD83(CSRS) (3)",METHOD["NTv2",ID["EPSG",9615]],PARAMETERFILE["Latitude and longitude difference file","NS778301.gsb"],USAGE[SCOPE["Transformation of coordinates at 1m to 2m level of accuracy."],AREA["Canada - Nova Scotia onshore."],BBOX[43.41,-66.28,47.08,-59.73]],ID["EPSG",1850],REMARK["Can be taken as an approximate transformation ATS77 to WGS 84 - see code 1851."]]]