31 (木)	05:47	07:01	14:58	23:07
	65cm	65cm	133cm	15cm
大潮 出 06:56 入 15:54 出 16:45 入 07:50

コイセボイ（北海道）2020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	21.0	↑1.5
12/31 00:10	22.6	↑1.6
12/31 00:20	24.3	↑1.7
12/31 00:30	26.0	↑1.7
12/31 00:40	27.8	↑1.8
12/31 00:50	29.7	↑1.9
12/31 01:00	31.7	↑2.0
12/31 01:10	33.6	↑1.9
12/31 01:20	35.6	↑2.0
12/31 01:30	37.6	↑2.0
12/31 01:40	39.6	↑2.0
12/31 01:50	41.5	↑1.9
12/31 02:00	43.4	↑1.9
12/31 02:10	45.3	↑1.9
12/31 02:20	47.1	↑1.8
12/31 02:30	48.9	↑1.8
12/31 02:40	50.6	↑1.7
12/31 02:50	52.2	↑1.6
12/31 03:00	53.7	↑1.5
12/31 03:10	55.1	↑1.4
12/31 03:20	56.4	↑1.3
12/31 03:30	57.6	↑1.2
12/31 03:40	58.7	↑1.1
12/31 03:50	59.7	↑1.0
12/31 04:00	60.6	↑0.9
12/31 04:10	61.4	↑0.8
12/31 04:20	62.1	↑0.7
12/31 04:30	62.7	↑0.6
12/31 04:40	63.2	↑0.5
12/31 04:50	63.6	↑0.4
12/31 05:00	63.9	↑0.3
12/31 05:10	64.2	↑0.3
12/31 05:20	64.4	↑0.2
12/31 05:30	64.5	↑0.1
12/31 05:40	64.5	0	満潮
12/31 05:50	64.5	0
12/31 06:00	64.5	0
12/31 06:10	64.4	↓-0.1
12/31 06:20	64.4	0
12/31 06:30	64.3	↓-0.1
12/31 06:40	64.2	↓-0.1
12/31 06:50	64.2	0
12/31 07:00	64.2	0	干潮
12/31 07:10	64.2	0
12/31 07:20	64.2	0
12/31 07:30	64.4	↑0.2
12/31 07:40	64.6	↑0.2
12/31 07:50	64.9	↑0.3
12/31 08:00	65.2	↑0.3
12/31 08:10	65.7	↑0.5
12/31 08:20	66.2	↑0.5
12/31 08:30	66.9	↑0.7
12/31 08:40	67.7	↑0.8
12/31 08:50	68.6	↑0.9
12/31 09:00	69.6	↑1.0
12/31 09:10	70.7	↑1.1
12/31 09:20	72.0	↑1.3
12/31 09:30	73.4	↑1.4
12/31 09:40	74.9	↑1.5
12/31 09:50	76.5	↑1.6
12/31 10:00	78.2	↑1.7
12/31 10:10	80.0	↑1.8
12/31 10:20	82.0	↑2.0
12/31 10:30	84.0	↑2.0
12/31 10:40	86.2	↑2.2
12/31 10:50	88.4	↑2.2
12/31 11:00	90.7	↑2.3
12/31 11:10	93.0	↑2.3
12/31 11:20	95.4	↑2.4
12/31 11:30	97.8	↑2.4
12/31 11:40	100.3	↑2.5
12/31 11:50	102.7	↑2.4
12/31 12:00	105.2	↑2.5
12/31 12:10	107.6	↑2.4
12/31 12:20	110.1	↑2.5
12/31 12:30	112.4	↑2.3
12/31 12:40	114.7	↑2.3
12/31 12:50	116.9	↑2.2
12/31 13:00	119.1	↑2.2
12/31 13:10	121.1	↑2.0
12/31 13:20	123.0	↑1.9
12/31 13:30	124.7	↑1.7
12/31 13:40	126.4	↑1.7
12/31 13:50	127.8	↑1.4
12/31 14:00	129.1	↑1.3
12/31 14:10	130.2	↑1.1
12/31 14:20	131.1	↑0.9
12/31 14:30	131.8	↑0.7
12/31 14:40	132.3	↑0.5
12/31 14:50	132.6	↑0.3	満潮
12/31 15:00	132.6	0
12/31 15:10	132.5	↓-0.1
12/31 15:20	132.0	↓-0.5
12/31 15:30	131.4	↓-0.6
12/31 15:40	130.5	↓-0.9
12/31 15:50	129.4	↓-1.1
12/31 16:00	128.0	↓-1.4
12/31 16:10	126.5	↓-1.5
12/31 16:20	124.7	↓-1.8
12/31 16:30	122.6	↓-2.1
12/31 16:40	120.4	↓-2.2
12/31 16:50	118.0	↓-2.4
12/31 17:00	115.3	↓-2.7
12/31 17:10	112.5	↓-2.8
12/31 17:20	109.5	↓-3.0
12/31 17:30	106.4	↓-3.1
12/31 17:40	103.1	↓-3.3
12/31 17:50	99.6	↓-3.5
12/31 18:00	96.1	↓-3.5
12/31 18:10	92.5	↓-3.6
12/31 18:20	88.7	↓-3.8
12/31 18:30	84.9	↓-3.8
12/31 18:40	81.1	↓-3.8
12/31 18:50	77.2	↓-3.9	最大潮位差
12/31 19:00	73.3	↓-3.9	最大潮位差
12/31 19:10	69.5	↓-3.8
12/31 19:20	65.6	↓-3.9	最大潮位差
12/31 19:30	61.8	↓-3.8
12/31 19:40	58.0	↓-3.8
12/31 19:50	54.3	↓-3.7
12/31 20:00	50.7	↓-3.6
12/31 20:10	47.2	↓-3.5
12/31 20:20	43.9	↓-3.3
12/31 20:30	40.6	↓-3.3
12/31 20:40	37.5	↓-3.1
12/31 20:50	34.6	↓-2.9
12/31 21:00	31.9	↓-2.7
12/31 21:10	29.3	↓-2.6
12/31 21:20	26.9	↓-2.4
12/31 21:30	24.7	↓-2.2
12/31 21:40	22.8	↓-1.9
12/31 21:50	21.0	↓-1.8
12/31 22:00	19.5	↓-1.5
12/31 22:10	18.1	↓-1.4
12/31 22:20	17.0	↓-1.1
12/31 22:30	16.1	↓-0.9
12/31 22:40	15.5	↓-0.6
12/31 22:50	15.0	↓-0.5
12/31 23:00	14.8	↓-0.2	干潮
12/31 23:10	14.8	0
12/31 23:20	15.0	↑0.2
12/31 23:30	15.3	↑0.3
12/31 23:40	15.9	↑0.6
12/31 23:50	16.6	↑0.7