The difference between the tidal hours for two stations will be the difference in the time of occurrence of the tides expressed in lunar hours.
One of the most important results brought out from the tidal observations of the expedition is the fact that high water occurs two hours earlier (in absolute time) at Cape Columbia than at Cape Sheridan.
The Cape Columbia tides are even earlier than the tides along the northern coast of the Spitzbergen Islands.

These facts prove that the tide at Cape Columbia comes from the west.

It is the Baffin Bay tide transmitted, first, northwesterly through the eastern portion of the Arctic Archipelago to the Arctic Ocean, and then easterly along the northern coast of Grant Land to Cape Columbia.

That the tide wave should be felt after a passage of this kind, instead of practically disappearing after entering the Arctic Ocean, is one argument for the existence of a waterway of limited width to the northwest of Grant Land.
This suggests that Crocker Land, first seen by Peary on June 24, 1906, from an altitude of about 2000 feet, may form a portion of the northern boundary of this channel or waterway.
The tides along the northern coast of Greenland are due mainly to the large rise-and-fall occurring at the head of Baffin Bay.

The Arctic Ocean being of itself a nearly tideless body so far as semidaily tides are concerned, it follows that the time of tide varies but little as one goes through Smith Sound, Kane Basin, Kennedy Channel, and Robeson Channel; in other words there exists a stationary oscillation in this waterway.