20 (土)	08:21	01:45	22:18	15:34
	76cm	41cm	54cm	28cm
小潮 出 06:26 入 17:18 出 10:36 入 00:39

函館（北海道）2021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	45.9	↓-0.8
2/20 00:10	45.1	↓-0.8
2/20 00:20	44.4	↓-0.7
2/20 00:30	43.7	↓-0.7
2/20 00:40	43.0	↓-0.7
2/20 00:50	42.4	↓-0.6
2/20 01:00	41.9	↓-0.5
2/20 01:10	41.5	↓-0.4
2/20 01:20	41.2	↓-0.3
2/20 01:30	41.0	↓-0.2
2/20 01:40	40.9	↓-0.1	干潮
2/20 01:50	40.9	0
2/20 02:00	41.1	↑0.2
2/20 02:10	41.3	↑0.2
2/20 02:20	41.7	↑0.4
2/20 02:30	42.2	↑0.5
2/20 02:40	42.8	↑0.6
2/20 02:50	43.6	↑0.8
2/20 03:00	44.4	↑0.8
2/20 03:10	45.4	↑1.0
2/20 03:20	46.4	↑1.0
2/20 03:30	47.5	↑1.1
2/20 03:40	48.7	↑1.2
2/20 03:50	49.9	↑1.2
2/20 04:00	51.2	↑1.3
2/20 04:10	52.5	↑1.3
2/20 04:20	53.9	↑1.4
2/20 04:30	55.2	↑1.3
2/20 04:40	56.6	↑1.4
2/20 04:50	58.0	↑1.4
2/20 05:00	59.3	↑1.3
2/20 05:10	60.6	↑1.3
2/20 05:20	61.9	↑1.3
2/20 05:30	63.2	↑1.3
2/20 05:40	64.4	↑1.2
2/20 05:50	65.6	↑1.2
2/20 06:00	66.8	↑1.2
2/20 06:10	67.9	↑1.1
2/20 06:20	68.9	↑1.0
2/20 06:30	69.9	↑1.0
2/20 06:40	70.8	↑0.9
2/20 06:50	71.7	↑0.9
2/20 07:00	72.5	↑0.8
2/20 07:10	73.3	↑0.8
2/20 07:20	73.9	↑0.6
2/20 07:30	74.5	↑0.6
2/20 07:40	75.0	↑0.5
2/20 07:50	75.4	↑0.4
2/20 08:00	75.6	↑0.2
2/20 08:10	75.8	↑0.2
2/20 08:20	75.9	↑0.1	満潮
2/20 08:30	75.8	↓-0.1
2/20 08:40	75.6	↓-0.2
2/20 08:50	75.3	↓-0.3
2/20 09:00	74.9	↓-0.4
2/20 09:10	74.3	↓-0.6
2/20 09:20	73.6	↓-0.7
2/20 09:30	72.8	↓-0.8
2/20 09:40	71.9	↓-0.9
2/20 09:50	70.9	↓-1.0
2/20 10:00	69.7	↓-1.2
2/20 10:10	68.5	↓-1.2
2/20 10:20	67.2	↓-1.3
2/20 10:30	65.8	↓-1.4
2/20 10:40	64.3	↓-1.5
2/20 10:50	62.8	↓-1.5
2/20 11:00	61.2	↓-1.6
2/20 11:10	59.5	↓-1.7
2/20 11:20	57.8	↓-1.7
2/20 11:30	56.1	↓-1.7
2/20 11:40	54.4	↓-1.7
2/20 11:50	52.6	↓-1.8	最大潮位差
2/20 12:00	50.9	↓-1.7
2/20 12:10	49.1	↓-1.8	最大潮位差
2/20 12:20	47.4	↓-1.7
2/20 12:30	45.6	↓-1.8	最大潮位差
2/20 12:40	43.9	↓-1.7
2/20 12:50	42.2	↓-1.7
2/20 13:00	40.6	↓-1.6
2/20 13:10	39.1	↓-1.5
2/20 13:20	37.5	↓-1.6
2/20 13:30	36.1	↓-1.4
2/20 13:40	34.8	↓-1.3
2/20 13:50	33.5	↓-1.3
2/20 14:00	32.3	↓-1.2
2/20 14:10	31.3	↓-1.0
2/20 14:20	30.4	↓-0.9
2/20 14:30	29.5	↓-0.9
2/20 14:40	28.8	↓-0.7
2/20 14:50	28.3	↓-0.5
2/20 15:00	27.8	↓-0.5
2/20 15:10	27.5	↓-0.3
2/20 15:20	27.3	↓-0.2
2/20 15:30	27.2	↓-0.1	干潮
2/20 15:40	27.2	0
2/20 15:50	27.4	↑0.2
2/20 16:00	27.6	↑0.2
2/20 16:10	27.9	↑0.3
2/20 16:20	28.3	↑0.4
2/20 16:30	28.8	↑0.5
2/20 16:40	29.3	↑0.5
2/20 16:50	29.9	↑0.6
2/20 17:00	30.5	↑0.6
2/20 17:10	31.2	↑0.7
2/20 17:20	31.9	↑0.7
2/20 17:30	32.7	↑0.8
2/20 17:40	33.5	↑0.8
2/20 17:50	34.3	↑0.8
2/20 18:00	35.2	↑0.9
2/20 18:10	36.0	↑0.8
2/20 18:20	36.9	↑0.9
2/20 18:30	37.8	↑0.9
2/20 18:40	38.8	↑1.0
2/20 18:50	39.7	↑0.9
2/20 19:00	40.7	↑1.0
2/20 19:10	41.6	↑0.9
2/20 19:20	42.6	↑1.0
2/20 19:30	43.6	↑1.0
2/20 19:40	44.6	↑1.0
2/20 19:50	45.5	↑0.9
2/20 20:00	46.4	↑0.9
2/20 20:10	47.3	↑0.9
2/20 20:20	48.2	↑0.9
2/20 20:30	49.0	↑0.8
2/20 20:40	49.8	↑0.8
2/20 20:50	50.5	↑0.7
2/20 21:00	51.1	↑0.6
2/20 21:10	51.7	↑0.6
2/20 21:20	52.1	↑0.4
2/20 21:30	52.5	↑0.4
2/20 21:40	52.9	↑0.4
2/20 21:50	53.1	↑0.2
2/20 22:00	53.2	↑0.1
2/20 22:10	53.3	↑0.1	満潮
2/20 22:20	53.3	0
2/20 22:30	53.3	0
2/20 22:40	53.2	↓-0.1
2/20 22:50	53.0	↓-0.2
2/20 23:00	52.8	↓-0.2
2/20 23:10	52.5	↓-0.3
2/20 23:20	52.2	↓-0.3
2/20 23:30	51.9	↓-0.3
2/20 23:40	51.5	↓-0.4
2/20 23:50	51.2	↓-0.3