31 (火)	10:08	03:13	20:36	13:43
	71cm	41cm	90cm	66cm
小潮 出 05:03 入 18:14 出 22:51 入 13:36

函館（北海道）2021年08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
8/31 00:00	61.8	↓-1.9	最大潮位差
8/31 00:10	60.0	↓-1.8
8/31 00:20	58.1	↓-1.9	最大潮位差
8/31 00:30	56.4	↓-1.7
8/31 00:40	54.6	↓-1.8
8/31 00:50	52.9	↓-1.7
8/31 01:00	51.3	↓-1.6
8/31 01:10	49.8	↓-1.5
8/31 01:20	48.3	↓-1.5
8/31 01:30	47.0	↓-1.3
8/31 01:40	45.7	↓-1.3
8/31 01:50	44.6	↓-1.1
8/31 02:00	43.6	↓-1.0
8/31 02:10	42.7	↓-0.9
8/31 02:20	42.0	↓-0.7
8/31 02:30	41.3	↓-0.7
8/31 02:40	40.9	↓-0.4
8/31 02:50	40.5	↓-0.4
8/31 03:00	40.3	↓-0.2
8/31 03:10	40.2	↓-0.1	干潮
8/31 03:20	40.3	↑0.1
8/31 03:30	40.4	↑0.1
8/31 03:40	40.7	↑0.3
8/31 03:50	41.0	↑0.3
8/31 04:00	41.5	↑0.5
8/31 04:10	42.0	↑0.5
8/31 04:20	42.7	↑0.7
8/31 04:30	43.3	↑0.6
8/31 04:40	44.1	↑0.8
8/31 04:50	44.9	↑0.8
8/31 05:00	45.7	↑0.8
8/31 05:10	46.6	↑0.9
8/31 05:20	47.5	↑0.9
8/31 05:30	48.5	↑1.0
8/31 05:40	49.5	↑1.0
8/31 05:50	50.5	↑1.0
8/31 06:00	51.5	↑1.0
8/31 06:10	52.6	↑1.1
8/31 06:20	53.7	↑1.1
8/31 06:30	54.8	↑1.1
8/31 06:40	55.9	↑1.1
8/31 06:50	57.0	↑1.1
8/31 07:00	58.1	↑1.1
8/31 07:10	59.2	↑1.1
8/31 07:20	60.2	↑1.0
8/31 07:30	61.3	↑1.1
8/31 07:40	62.3	↑1.0
8/31 07:50	63.3	↑1.0
8/31 08:00	64.3	↑1.0
8/31 08:10	65.2	↑0.9
8/31 08:20	66.0	↑0.8
8/31 08:30	66.8	↑0.8
8/31 08:40	67.5	↑0.7
8/31 08:50	68.1	↑0.6
8/31 09:00	68.7	↑0.6
8/31 09:10	69.1	↑0.4
8/31 09:20	69.5	↑0.4
8/31 09:30	69.8	↑0.3
8/31 09:40	70.1	↑0.3
8/31 09:50	70.2	↑0.1
8/31 10:00	70.3	↑0.1	満潮
8/31 10:10	70.3	0
8/31 10:20	70.3	0
8/31 10:30	70.2	↓-0.1
8/31 10:40	70.0	↓-0.2
8/31 10:50	69.8	↓-0.2
8/31 11:00	69.6	↓-0.2
8/31 11:10	69.3	↓-0.3
8/31 11:20	69.0	↓-0.3
8/31 11:30	68.7	↓-0.3
8/31 11:40	68.4	↓-0.3
8/31 11:50	68.0	↓-0.4
8/31 12:00	67.7	↓-0.3
8/31 12:10	67.4	↓-0.3
8/31 12:20	67.1	↓-0.3
8/31 12:30	66.7	↓-0.4
8/31 12:40	66.4	↓-0.3
8/31 12:50	66.2	↓-0.2
8/31 13:00	65.9	↓-0.3
8/31 13:10	65.7	↓-0.2
8/31 13:20	65.6	↓-0.1
8/31 13:30	65.5	↓-0.1
8/31 13:40	65.4	↓-0.1	干潮
8/31 13:50	65.5	↑0.1
8/31 14:00	65.5	0
8/31 14:10	65.7	↑0.2
8/31 14:20	65.9	↑0.2
8/31 14:30	66.2	↑0.3
8/31 14:40	66.6	↑0.4
8/31 14:50	67.1	↑0.5
8/31 15:00	67.6	↑0.5
8/31 15:10	68.2	↑0.6
8/31 15:20	68.9	↑0.7
8/31 15:30	69.7	↑0.8
8/31 15:40	70.5	↑0.8
8/31 15:50	71.3	↑0.8
8/31 16:00	72.2	↑0.9
8/31 16:10	73.1	↑0.9
8/31 16:20	74.0	↑0.9
8/31 16:30	74.9	↑0.9
8/31 16:40	75.9	↑1.0
8/31 16:50	76.8	↑0.9
8/31 17:00	77.7	↑0.9
8/31 17:10	78.6	↑0.9
8/31 17:20	79.5	↑0.9
8/31 17:30	80.3	↑0.8
8/31 17:40	81.1	↑0.8
8/31 17:50	81.9	↑0.8
8/31 18:00	82.6	↑0.7
8/31 18:10	83.4	↑0.8
8/31 18:20	84.0	↑0.6
8/31 18:30	84.7	↑0.7
8/31 18:40	85.3	↑0.6
8/31 18:50	85.9	↑0.6
8/31 19:00	86.4	↑0.5
8/31 19:10	87.0	↑0.6
8/31 19:20	87.4	↑0.4
8/31 19:30	87.9	↑0.5
8/31 19:40	88.3	↑0.4
8/31 19:50	88.6	↑0.3
8/31 20:00	88.9	↑0.3
8/31 20:10	89.1	↑0.2
8/31 20:20	89.3	↑0.2
8/31 20:30	89.3	0	満潮
8/31 20:40	89.3	0
8/31 20:50	89.3	0
8/31 21:00	89.1	↓-0.2
8/31 21:10	88.8	↓-0.3
8/31 21:20	88.5	↓-0.3
8/31 21:30	88.0	↓-0.5
8/31 21:40	87.4	↓-0.6
8/31 21:50	86.8	↓-0.6
8/31 22:00	86.0	↓-0.8
8/31 22:10	85.1	↓-0.9
8/31 22:20	84.2	↓-0.9
8/31 22:30	83.1	↓-1.1
8/31 22:40	82.0	↓-1.1
8/31 22:50	80.8	↓-1.2
8/31 23:00	79.6	↓-1.2
8/31 23:10	78.2	↓-1.4
8/31 23:20	76.9	↓-1.3
8/31 23:30	75.4	↓-1.5
8/31 23:40	73.9	↓-1.5
8/31 23:50	72.4	↓-1.5