20 (木)	03:11	07:39	12:42	20:40
	67cm	58cm	83cm	11cm
中潮 出 06:28 入 17:17 出 04:28 入 13:48

函館（北海道）2020年02月20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
2/20 00:00	51.4	↑1.6
2/20 00:10	53.0	↑1.6
2/20 00:20	54.5	↑1.5
2/20 00:30	56.0	↑1.5
2/20 00:40	57.3	↑1.3
2/20 00:50	58.6	↑1.3
2/20 01:00	59.7	↑1.1
2/20 01:10	60.8	↑1.1
2/20 01:20	61.8	↑1.0
2/20 01:30	62.7	↑0.9
2/20 01:40	63.5	↑0.8
2/20 01:50	64.2	↑0.7
2/20 02:00	64.8	↑0.6
2/20 02:10	65.4	↑0.6
2/20 02:20	65.8	↑0.4
2/20 02:30	66.2	↑0.4
2/20 02:40	66.5	↑0.3
2/20 02:50	66.7	↑0.2
2/20 03:00	66.8	↑0.1
2/20 03:10	66.8	0	満潮
2/20 03:20	66.8	0
2/20 03:30	66.7	↓-0.1
2/20 03:40	66.5	↓-0.2
2/20 03:50	66.2	↓-0.3
2/20 04:00	66.0	↓-0.2
2/20 04:10	65.6	↓-0.4
2/20 04:20	65.2	↓-0.4
2/20 04:30	64.8	↓-0.4
2/20 04:40	64.4	↓-0.4
2/20 04:50	63.9	↓-0.5
2/20 05:00	63.4	↓-0.5
2/20 05:10	62.9	↓-0.5
2/20 05:20	62.4	↓-0.5
2/20 05:30	61.9	↓-0.5
2/20 05:40	61.4	↓-0.5
2/20 05:50	60.9	↓-0.5
2/20 06:00	60.4	↓-0.5
2/20 06:10	59.9	↓-0.5
2/20 06:20	59.5	↓-0.4
2/20 06:30	59.1	↓-0.4
2/20 06:40	58.7	↓-0.4
2/20 06:50	58.4	↓-0.3
2/20 07:00	58.1	↓-0.3
2/20 07:10	57.8	↓-0.3
2/20 07:20	57.7	↓-0.1
2/20 07:30	57.6	↓-0.1	干潮
2/20 07:40	57.5	↓-0.1
2/20 07:50	57.6	↑0.1
2/20 08:00	57.7	↑0.1
2/20 08:10	58.0	↑0.3
2/20 08:20	58.3	↑0.3
2/20 08:30	58.8	↑0.5
2/20 08:40	59.4	↑0.6
2/20 08:50	60.1	↑0.7
2/20 09:00	60.8	↑0.7
2/20 09:10	61.8	↑1.0
2/20 09:20	62.8	↑1.0
2/20 09:30	63.9	↑1.1
2/20 09:40	65.0	↑1.1
2/20 09:50	66.3	↑1.3
2/20 10:00	67.6	↑1.3
2/20 10:10	69.0	↑1.4
2/20 10:20	70.3	↑1.3
2/20 10:30	71.7	↑1.4
2/20 10:40	73.1	↑1.4
2/20 10:50	74.4	↑1.3
2/20 11:00	75.7	↑1.3
2/20 11:10	76.9	↑1.2
2/20 11:20	78.1	↑1.2
2/20 11:30	79.1	↑1.0
2/20 11:40	80.0	↑0.9
2/20 11:50	80.8	↑0.8
2/20 12:00	81.5	↑0.7
2/20 12:10	82.1	↑0.6
2/20 12:20	82.4	↑0.3
2/20 12:30	82.7	↑0.3
2/20 12:40	82.8	↑0.1	満潮
2/20 12:50	82.7	↓-0.1
2/20 13:00	82.5	↓-0.2
2/20 13:10	82.2	↓-0.3
2/20 13:20	81.7	↓-0.5
2/20 13:30	81.0	↓-0.7
2/20 13:40	80.3	↓-0.7
2/20 13:50	79.4	↓-0.9
2/20 14:00	78.3	↓-1.1
2/20 14:10	77.2	↓-1.1
2/20 14:20	75.9	↓-1.3
2/20 14:30	74.6	↓-1.3
2/20 14:40	73.1	↓-1.5
2/20 14:50	71.5	↓-1.6
2/20 15:00	69.8	↓-1.7
2/20 15:10	68.0	↓-1.8
2/20 15:20	66.1	↓-1.9
2/20 15:30	64.1	↓-2.0
2/20 15:40	62.1	↓-2.0
2/20 15:50	60.0	↓-2.1
2/20 16:00	57.8	↓-2.2
2/20 16:10	55.6	↓-2.2
2/20 16:20	53.3	↓-2.3
2/20 16:30	51.0	↓-2.3
2/20 16:40	48.7	↓-2.3
2/20 16:50	46.3	↓-2.4
2/20 17:00	44.0	↓-2.3
2/20 17:10	41.7	↓-2.3
2/20 17:20	39.3	↓-2.4
2/20 17:30	37.0	↓-2.3
2/20 17:40	34.8	↓-2.2
2/20 17:50	32.5	↓-2.3
2/20 18:00	30.4	↓-2.1
2/20 18:10	28.3	↓-2.1
2/20 18:20	26.2	↓-2.1
2/20 18:30	24.3	↓-1.9
2/20 18:40	22.4	↓-1.9
2/20 18:50	20.6	↓-1.8
2/20 19:00	18.9	↓-1.7
2/20 19:10	17.4	↓-1.5
2/20 19:20	15.9	↓-1.5
2/20 19:30	14.6	↓-1.3
2/20 19:40	13.5	↓-1.1
2/20 19:50	12.5	↓-1.0
2/20 20:00	11.6	↓-0.9
2/20 20:10	11.0	↓-0.6
2/20 20:20	10.5	↓-0.5
2/20 20:30	10.2	↓-0.3	干潮
2/20 20:40	10.1	↓-0.1	干潮
2/20 20:50	10.3	↑0.2
2/20 21:00	10.6	↑0.3
2/20 21:10	11.1	↑0.5
2/20 21:20	11.9	↑0.8
2/20 21:30	12.9	↑1.0
2/20 21:40	14.0	↑1.1
2/20 21:50	15.4	↑1.4
2/20 22:00	17.0	↑1.6
2/20 22:10	18.7	↑1.7
2/20 22:20	20.6	↑1.9
2/20 22:30	22.6	↑2.0
2/20 22:40	24.8	↑2.2
2/20 22:50	27.1	↑2.3
2/20 23:00	29.4	↑2.3
2/20 23:10	31.8	↑2.4
2/20 23:20	34.3	↑2.5	最大潮位差
2/20 23:30	36.8	↑2.5	最大潮位差
2/20 23:40	39.2	↑2.4
2/20 23:50	41.7	↑2.5	最大潮位差