31 (木)	05:09	10:12	15:38	23:05
	81cm	56cm	99cm	0cm
大潮 出 07:04 入 16:19 出 17:12 入 07:57

函館（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	11.9	↑2.2
12/31 00:10	14.3	↑2.4
12/31 00:20	16.9	↑2.6
12/31 00:30	19.6	↑2.7
12/31 00:40	22.5	↑2.9
12/31 00:50	25.6	↑3.1
12/31 01:00	28.7	↑3.1
12/31 01:10	32.0	↑3.3
12/31 01:20	35.3	↑3.3
12/31 01:30	38.6	↑3.3
12/31 01:40	41.9	↑3.3
12/31 01:50	45.2	↑3.3
12/31 02:00	48.5	↑3.3
12/31 02:10	51.7	↑3.2
12/31 02:20	54.7	↑3.0
12/31 02:30	57.7	↑3.0
12/31 02:40	60.5	↑2.8
12/31 02:50	63.2	↑2.7
12/31 03:00	65.7	↑2.5
12/31 03:10	68.0	↑2.3
12/31 03:20	70.1	↑2.1
12/31 03:30	72.0	↑1.9
12/31 03:40	73.8	↑1.8
12/31 03:50	75.3	↑1.5
12/31 04:00	76.6	↑1.3
12/31 04:10	77.7	↑1.1
12/31 04:20	78.6	↑0.9
12/31 04:30	79.3	↑0.7
12/31 04:40	79.8	↑0.5
12/31 04:50	80.2	↑0.4
12/31 05:00	80.4	↑0.2	満潮
12/31 05:10	80.4	0
12/31 05:20	80.3	↓-0.1
12/31 05:30	80.1	↓-0.2
12/31 05:40	79.7	↓-0.4
12/31 05:50	79.3	↓-0.4
12/31 06:00	78.7	↓-0.6
12/31 06:10	78.0	↓-0.7
12/31 06:20	77.2	↓-0.8
12/31 06:30	76.4	↓-0.8
12/31 06:40	75.4	↓-1.0
12/31 06:50	74.4	↓-1.0
12/31 07:00	73.3	↓-1.1
12/31 07:10	72.2	↓-1.1
12/31 07:20	71.0	↓-1.2
12/31 07:30	69.7	↓-1.3
12/31 07:40	68.5	↓-1.2
12/31 07:50	67.2	↓-1.3
12/31 08:00	65.9	↓-1.3
12/31 08:10	64.7	↓-1.2
12/31 08:20	63.4	↓-1.3
12/31 08:30	62.2	↓-1.2
12/31 08:40	61.1	↓-1.1
12/31 08:50	60.0	↓-1.1
12/31 09:00	59.0	↓-1.0
12/31 09:10	58.1	↓-0.9
12/31 09:20	57.3	↓-0.8
12/31 09:30	56.6	↓-0.7
12/31 09:40	56.1	↓-0.5
12/31 09:50	55.7	↓-0.4
12/31 10:00	55.4	↓-0.3
12/31 10:10	55.3	↓-0.1	干潮
12/31 10:20	55.4	↑0.1
12/31 10:30	55.6	↑0.2
12/31 10:40	56.0	↑0.4
12/31 10:50	56.6	↑0.6
12/31 11:00	57.3	↑0.7
12/31 11:10	58.2	↑0.9
12/31 11:20	59.2	↑1.0
12/31 11:30	60.4	↑1.2
12/31 11:40	61.7	↑1.3
12/31 11:50	63.2	↑1.5
12/31 12:00	64.8	↑1.6
12/31 12:10	66.5	↑1.7
12/31 12:20	68.3	↑1.8
12/31 12:30	70.2	↑1.9
12/31 12:40	72.2	↑2.0
12/31 12:50	74.3	↑2.1
12/31 13:00	76.3	↑2.0
12/31 13:10	78.5	↑2.2
12/31 13:20	80.6	↑2.1
12/31 13:30	82.7	↑2.1
12/31 13:40	84.8	↑2.1
12/31 13:50	86.8	↑2.0
12/31 14:00	88.7	↑1.9
12/31 14:10	90.5	↑1.8
12/31 14:20	92.2	↑1.7
12/31 14:30	93.7	↑1.5
12/31 14:40	95.1	↑1.4
12/31 14:50	96.3	↑1.2
12/31 15:00	97.3	↑1.0
12/31 15:10	98.1	↑0.8
12/31 15:20	98.6	↑0.5
12/31 15:30	98.9	↑0.3	満潮
12/31 15:40	98.9	0
12/31 15:50	98.7	↓-0.2
12/31 16:00	98.3	↓-0.4
12/31 16:10	97.6	↓-0.7
12/31 16:20	96.7	↓-0.9
12/31 16:30	95.5	↓-1.2
12/31 16:40	94.2	↓-1.3
12/31 16:50	92.6	↓-1.6
12/31 17:00	90.8	↓-1.8
12/31 17:10	88.8	↓-2.0
12/31 17:20	86.6	↓-2.2
12/31 17:30	84.3	↓-2.3
12/31 17:40	81.8	↓-2.5
12/31 17:50	79.2	↓-2.6
12/31 18:00	76.4	↓-2.8
12/31 18:10	73.6	↓-2.8
12/31 18:20	70.6	↓-3.0
12/31 18:30	67.6	↓-3.0
12/31 18:40	64.4	↓-3.2
12/31 18:50	61.2	↓-3.2
12/31 19:00	58.0	↓-3.2
12/31 19:10	54.6	↓-3.4	最大潮位差
12/31 19:20	51.3	↓-3.3
12/31 19:30	47.9	↓-3.4	最大潮位差
12/31 19:40	44.5	↓-3.4	最大潮位差
12/31 19:50	41.1	↓-3.4	最大潮位差
12/31 20:00	37.7	↓-3.4	最大潮位差
12/31 20:10	34.4	↓-3.3
12/31 20:20	31.1	↓-3.3
12/31 20:30	27.8	↓-3.3
12/31 20:40	24.7	↓-3.1
12/31 20:50	21.6	↓-3.1
12/31 21:00	18.7	↓-2.9
12/31 21:10	16.0	↓-2.7
12/31 21:20	13.3	↓-2.7
12/31 21:30	10.9	↓-2.4
12/31 21:40	8.7	↓-2.2
12/31 21:50	6.7	↓-2.0
12/31 22:00	4.9	↓-1.8
12/31 22:10	3.3	↓-1.6
12/31 22:20	2.0	↓-1.3
12/31 22:30	0.9	↓-1.1
12/31 22:40	0.2	↓-0.7
12/31 22:50	-0.3	↓-0.5
12/31 23:00	-0.6	↓-0.3	干潮
12/31 23:10	-0.5	↑0.1
12/31 23:20	-0.2	↑0.3
12/31 23:30	0.4	↑0.6
12/31 23:40	1.2	↑0.8
12/31 23:50	2.3	↑1.1