We calculate the height of the tide in the same manner. 5.6 meters lies at about half the interval between plus 0.3 and plus 0.9 meters. So the height difference for high water should read plus 0.6 meters. We apply this figure to the high water in Cherbourg. 5.6 meters plus 0.6 meters equals 6.2 meters. The high water in Barfleur at 19:33 will be 6.2 meters.