31 (日)	03:30	05:14	13:00	21:06
	67cm	66cm	121cm	23cm
大潮 出 06:56 入 15:53 出 04:49 入 14:34

コイセボイ（北海道）2051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	51.1	↑1.4
12/31 00:10	52.5	↑1.4
12/31 00:20	53.9	↑1.4
12/31 00:30	55.2	↑1.3
12/31 00:40	56.4	↑1.2
12/31 00:50	57.6	↑1.2
12/31 01:00	58.7	↑1.1
12/31 01:10	59.8	↑1.1
12/31 01:20	60.7	↑0.9
12/31 01:30	61.6	↑0.9
12/31 01:40	62.4	↑0.8
12/31 01:50	63.1	↑0.7
12/31 02:00	63.7	↑0.6
12/31 02:10	64.3	↑0.6
12/31 02:20	64.8	↑0.5
12/31 02:30	65.1	↑0.3
12/31 02:40	65.5	↑0.4
12/31 02:50	65.7	↑0.2
12/31 03:00	65.9	↑0.2
12/31 03:10	66.0	↑0.1
12/31 03:20	66.1	↑0.1	満潮
12/31 03:30	66.1	0	満潮
12/31 03:40	66.1	0
12/31 03:50	66.0	↓-0.1
12/31 04:00	65.9	↓-0.1
12/31 04:10	65.8	↓-0.1
12/31 04:20	65.7	↓-0.1
12/31 04:30	65.6	↓-0.1
12/31 04:40	65.5	↓-0.1
12/31 04:50	65.4	↓-0.1
12/31 05:00	65.3	↓-0.1
12/31 05:10	65.3	0	干潮
12/31 05:20	65.3	0
12/31 05:30	65.4	↑0.1
12/31 05:40	65.5	↑0.1
12/31 05:50	65.7	↑0.2
12/31 06:00	65.9	↑0.2
12/31 06:10	66.3	↑0.4
12/31 06:20	66.7	↑0.4
12/31 06:30	67.2	↑0.5
12/31 06:40	67.7	↑0.5
12/31 06:50	68.4	↑0.7
12/31 07:00	69.2	↑0.8
12/31 07:10	70.1	↑0.9
12/31 07:20	71.1	↑1.0
12/31 07:30	72.2	↑1.1
12/31 07:40	73.3	↑1.1
12/31 07:50	74.6	↑1.3
12/31 08:00	76.0	↑1.4
12/31 08:10	77.4	↑1.4
12/31 08:20	79.0	↑1.6
12/31 08:30	80.6	↑1.6
12/31 08:40	82.3	↑1.7
12/31 08:50	84.1	↑1.8
12/31 09:00	85.9	↑1.8
12/31 09:10	87.8	↑1.9
12/31 09:20	89.8	↑2.0
12/31 09:30	91.7	↑1.9
12/31 09:40	93.7	↑2.0
12/31 09:50	95.7	↑2.0
12/31 10:00	97.7	↑2.0
12/31 10:10	99.7	↑2.0
12/31 10:20	101.6	↑1.9
12/31 10:30	103.6	↑2.0
12/31 10:40	105.4	↑1.8
12/31 10:50	107.3	↑1.9
12/31 11:00	109.0	↑1.7
12/31 11:10	110.7	↑1.7
12/31 11:20	112.2	↑1.5
12/31 11:30	113.7	↑1.5
12/31 11:40	115.0	↑1.3
12/31 11:50	116.3	↑1.3
12/31 12:00	117.3	↑1.0
12/31 12:10	118.3	↑1.0
12/31 12:20	119.0	↑0.7
12/31 12:30	119.7	↑0.7
12/31 12:40	120.1	↑0.4
12/31 12:50	120.4	↑0.3	満潮
12/31 13:00	120.4	0	満潮
12/31 13:10	120.3	↓-0.1
12/31 13:20	120.0	↓-0.3
12/31 13:30	119.5	↓-0.5
12/31 13:40	118.8	↓-0.7
12/31 13:50	118.0	↓-0.8
12/31 14:00	116.9	↓-1.1
12/31 14:10	115.6	↓-1.3
12/31 14:20	114.2	↓-1.4
12/31 14:30	112.5	↓-1.7
12/31 14:40	110.7	↓-1.8
12/31 14:50	108.7	↓-2.0
12/31 15:00	106.6	↓-2.1
12/31 15:10	104.3	↓-2.3
12/31 15:20	101.8	↓-2.5
12/31 15:30	99.3	↓-2.5
12/31 15:40	96.5	↓-2.8
12/31 15:50	93.7	↓-2.8
12/31 16:00	90.8	↓-2.9
12/31 16:10	87.8	↓-3.0
12/31 16:20	84.7	↓-3.1
12/31 16:30	81.6	↓-3.1
12/31 16:40	78.4	↓-3.2
12/31 16:50	75.2	↓-3.2
12/31 17:00	71.9	↓-3.3	最大潮位差
12/31 17:10	68.7	↓-3.2
12/31 17:20	65.5	↓-3.2
12/31 17:30	62.3	↓-3.2
12/31 17:40	59.2	↓-3.1
12/31 17:50	56.1	↓-3.1
12/31 18:00	53.1	↓-3.0
12/31 18:10	50.1	↓-3.0
12/31 18:20	47.3	↓-2.8
12/31 18:30	44.6	↓-2.7
12/31 18:40	42.0	↓-2.6
12/31 18:50	39.5	↓-2.5
12/31 19:00	37.2	↓-2.3
12/31 19:10	35.0	↓-2.2
12/31 19:20	33.0	↓-2.0
12/31 19:30	31.2	↓-1.8
12/31 19:40	29.5	↓-1.7
12/31 19:50	28.0	↓-1.5
12/31 20:00	26.7	↓-1.3
12/31 20:10	25.6	↓-1.1
12/31 20:20	24.7	↓-0.9
12/31 20:30	24.0	↓-0.7
12/31 20:40	23.4	↓-0.6
12/31 20:50	23.1	↓-0.3
12/31 21:00	22.9	↓-0.2	干潮
12/31 21:10	22.9	0
12/31 21:20	23.1	↑0.2
12/31 21:30	23.4	↑0.3
12/31 21:40	23.9	↑0.5
12/31 21:50	24.6	↑0.7
12/31 22:00	25.4	↑0.8
12/31 22:10	26.4	↑1.0
12/31 22:20	27.5	↑1.1
12/31 22:30	28.7	↑1.2
12/31 22:40	30.0	↑1.3
12/31 22:50	31.4	↑1.4
12/31 23:00	32.9	↑1.5
12/31 23:10	34.4	↑1.5
12/31 23:20	36.1	↑1.7
12/31 23:30	37.7	↑1.6
12/31 23:40	39.4	↑1.7
12/31 23:50	41.2	↑1.8