It held fixed the height of the primary tidal bench mark, referenced to the International Great Lakes Datum of 1985 local mean sea level height value, at Rimouski, Quebec, Canada.
2.
Additional tidal bench mark elevations were not used due to the demonstrated variations in sea surface topography, i . e ., that mean sea level is not the same equipotential surface at all tidal bench marks.
3.
Additional tidal bench mark elevations were not used due to the demonstrated variations in sea surface topography, i . e ., that mean sea level is not the same equipotential surface at all tidal bench marks.