31 (土)	05:16	08:58	15:55	23:28
	70cm	59cm	123cm	26cm
中潮 出 06:56 入 15:53 出 19:16 入 08:23

コイセボイ（北海道）2050年12月31日の10分毎の潮の高低差を確認できます。
また1日の潮の高低差が1番大きい（潮の流れが大きい）時間に「最大潮位差」と明記してます。

時刻	潮位	高低差	各ポイント
12/31 00:00	25.7	↑1.1
12/31 00:10	26.9	↑1.2
12/31 00:20	28.3	↑1.4
12/31 00:30	29.9	↑1.6
12/31 00:40	31.5	↑1.6
12/31 00:50	33.2	↑1.7
12/31 01:00	35.1	↑1.9
12/31 01:10	37.0	↑1.9
12/31 01:20	38.9	↑1.9
12/31 01:30	40.9	↑2.0
12/31 01:40	42.9	↑2.0
12/31 01:50	44.9	↑2.0
12/31 02:00	46.9	↑2.0
12/31 02:10	48.9	↑2.0
12/31 02:20	50.9	↑2.0
12/31 02:30	52.8	↑1.9
12/31 02:40	54.6	↑1.8
12/31 02:50	56.4	↑1.8
12/31 03:00	58.1	↑1.7
12/31 03:10	59.7	↑1.6
12/31 03:20	61.2	↑1.5
12/31 03:30	62.6	↑1.4
12/31 03:40	63.9	↑1.3
12/31 03:50	65.0	↑1.1
12/31 04:00	66.1	↑1.1
12/31 04:10	67.0	↑0.9
12/31 04:20	67.7	↑0.7
12/31 04:30	68.4	↑0.7
12/31 04:40	68.9	↑0.5
12/31 04:50	69.2	↑0.3
12/31 05:00	69.5	↑0.3
12/31 05:10	69.6	↑0.1	満潮
12/31 05:20	69.6	0
12/31 05:30	69.5	↓-0.1
12/31 05:40	69.2	↓-0.3
12/31 05:50	68.9	↓-0.3
12/31 06:00	68.5	↓-0.4
12/31 06:10	68.0	↓-0.5
12/31 06:20	67.4	↓-0.6
12/31 06:30	66.8	↓-0.6
12/31 06:40	66.2	↓-0.6
12/31 06:50	65.5	↓-0.7
12/31 07:00	64.7	↓-0.8
12/31 07:10	64.0	↓-0.7
12/31 07:20	63.3	↓-0.7
12/31 07:30	62.6	↓-0.7
12/31 07:40	61.9	↓-0.7
12/31 07:50	61.2	↓-0.7
12/31 08:00	60.7	↓-0.5
12/31 08:10	60.1	↓-0.6
12/31 08:20	59.7	↓-0.4
12/31 08:30	59.3	↓-0.4
12/31 08:40	59.1	↓-0.2
12/31 08:50	58.9	↓-0.2	干潮
12/31 09:00	58.9	0
12/31 09:10	59.0	↑0.1
12/31 09:20	59.2	↑0.2
12/31 09:30	59.6	↑0.4
12/31 09:40	60.1	↑0.5
12/31 09:50	60.8	↑0.7
12/31 10:00	61.6	↑0.8
12/31 10:10	62.5	↑0.9
12/31 10:20	63.6	↑1.1
12/31 10:30	64.8	↑1.2
12/31 10:40	66.2	↑1.4
12/31 10:50	67.7	↑1.5
12/31 11:00	69.4	↑1.7
12/31 11:10	71.1	↑1.7
12/31 11:20	73.0	↑1.9
12/31 11:30	75.0	↑2.0
12/31 11:40	77.2	↑2.2
12/31 11:50	79.4	↑2.2
12/31 12:00	81.6	↑2.2
12/31 12:10	84.0	↑2.4
12/31 12:20	86.4	↑2.4
12/31 12:30	88.8	↑2.4
12/31 12:40	91.3	↑2.5
12/31 12:50	93.7	↑2.4
12/31 13:00	96.2	↑2.5
12/31 13:10	98.6	↑2.4
12/31 13:20	101.1	↑2.5
12/31 13:30	103.4	↑2.3
12/31 13:40	105.7	↑2.3
12/31 13:50	107.9	↑2.2
12/31 14:00	110.0	↑2.1
12/31 14:10	112.0	↑2.0
12/31 14:20	113.8	↑1.8
12/31 14:30	115.6	↑1.8
12/31 14:40	117.1	↑1.5
12/31 14:50	118.5	↑1.4
12/31 15:00	119.7	↑1.2
12/31 15:10	120.8	↑1.1
12/31 15:20	121.6	↑0.8
12/31 15:30	122.2	↑0.6
12/31 15:40	122.6	↑0.4
12/31 15:50	122.8	↑0.2	満潮
12/31 16:00	122.8	0
12/31 16:10	122.5	↓-0.3
12/31 16:20	122.0	↓-0.5
12/31 16:30	121.3	↓-0.7
12/31 16:40	120.4	↓-0.9
12/31 16:50	119.2	↓-1.2
12/31 17:00	117.9	↓-1.3
12/31 17:10	116.3	↓-1.6
12/31 17:20	114.5	↓-1.8
12/31 17:30	112.5	↓-2.0
12/31 17:40	110.3	↓-2.2
12/31 17:50	107.9	↓-2.4
12/31 18:00	105.3	↓-2.6
12/31 18:10	102.6	↓-2.7
12/31 18:20	99.8	↓-2.8
12/31 18:30	96.8	↓-3.0
12/31 18:40	93.7	↓-3.1
12/31 18:50	90.5	↓-3.2
12/31 19:00	87.3	↓-3.2
12/31 19:10	83.9	↓-3.4
12/31 19:20	80.6	↓-3.3
12/31 19:30	77.2	↓-3.4
12/31 19:40	73.7	↓-3.5	最大潮位差
12/31 19:50	70.3	↓-3.4
12/31 20:00	66.9	↓-3.4
12/31 20:10	63.6	↓-3.3
12/31 20:20	60.3	↓-3.3
12/31 20:30	57.1	↓-3.2
12/31 20:40	53.9	↓-3.2
12/31 20:50	50.9	↓-3.0
12/31 21:00	48.0	↓-2.9
12/31 21:10	45.3	↓-2.7
12/31 21:20	42.6	↓-2.7
12/31 21:30	40.2	↓-2.4
12/31 21:40	37.9	↓-2.3
12/31 21:50	35.8	↓-2.1
12/31 22:00	33.9	↓-1.9
12/31 22:10	32.2	↓-1.7
12/31 22:20	30.6	↓-1.6
12/31 22:30	29.3	↓-1.3
12/31 22:40	28.2	↓-1.1
12/31 22:50	27.4	↓-0.8
12/31 23:00	26.7	↓-0.7
12/31 23:10	26.2	↓-0.5
12/31 23:20	26.0	↓-0.2	干潮
12/31 23:30	25.9	↓-0.1
12/31 23:40	26.1	↑0.2
12/31 23:50	26.5	↑0.4