31 (水)	08:51	01:48	19:05	13:10
	73cm	18cm	90cm	62cm
小潮 出 06:08 入 16:36 出 22:25 入 12:24

函館（北海道）2018年10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
10/31 00:00	29.2	↓-2.1
10/31 00:10	27.3	↓-1.9
10/31 00:20	25.5	↓-1.8
10/31 00:30	23.9	↓-1.6
10/31 00:40	22.4	↓-1.5
10/31 00:50	21.2	↓-1.2
10/31 01:00	20.1	↓-1.1
10/31 01:10	19.2	↓-0.9
10/31 01:20	18.6	↓-0.6
10/31 01:30	18.1	↓-0.5
10/31 01:40	17.8	↓-0.3	干潮
10/31 01:50	17.8	0
10/31 02:00	18.0	↑0.2
10/31 02:10	18.3	↑0.3
10/31 02:20	18.9	↑0.6
10/31 02:30	19.6	↑0.7
10/31 02:40	20.5	↑0.9
10/31 02:50	21.5	↑1.0
10/31 03:00	22.7	↑1.2
10/31 03:10	24.1	↑1.4
10/31 03:20	25.5	↑1.4
10/31 03:30	27.1	↑1.6
10/31 03:40	28.8	↑1.7
10/31 03:50	30.5	↑1.7
10/31 04:00	32.3	↑1.8
10/31 04:10	34.2	↑1.9
10/31 04:20	36.2	↑2.0
10/31 04:30	38.1	↑1.9
10/31 04:40	40.1	↑2.0
10/31 04:50	42.2	↑2.1
10/31 05:00	44.2	↑2.0
10/31 05:10	46.2	↑2.0
10/31 05:20	48.2	↑2.0
10/31 05:30	50.3	↑2.1
10/31 05:40	52.2	↑1.9
10/31 05:50	54.2	↑2.0
10/31 06:00	56.1	↑1.9
10/31 06:10	57.9	↑1.8
10/31 06:20	59.7	↑1.8
10/31 06:30	61.3	↑1.6
10/31 06:40	62.9	↑1.6
10/31 06:50	64.4	↑1.5
10/31 07:00	65.8	↑1.4
10/31 07:10	67.1	↑1.3
10/31 07:20	68.2	↑1.1
10/31 07:30	69.2	↑1.0
10/31 07:40	70.1	↑0.9
10/31 07:50	70.9	↑0.8
10/31 08:00	71.5	↑0.6
10/31 08:10	72.1	↑0.6
10/31 08:20	72.5	↑0.4
10/31 08:30	72.7	↑0.2
10/31 08:40	72.9	↑0.2
10/31 08:50	72.9	0	満潮
10/31 09:00	72.9	0
10/31 09:10	72.8	↓-0.1
10/31 09:20	72.5	↓-0.3
10/31 09:30	72.3	↓-0.2
10/31 09:40	71.9	↓-0.4
10/31 09:50	71.5	↓-0.4
10/31 10:00	71.0	↓-0.5
10/31 10:10	70.5	↓-0.5
10/31 10:20	69.9	↓-0.6
10/31 10:30	69.3	↓-0.6
10/31 10:40	68.7	↓-0.6
10/31 10:50	68.1	↓-0.6
10/31 11:00	67.4	↓-0.7
10/31 11:10	66.8	↓-0.6
10/31 11:20	66.1	↓-0.7
10/31 11:30	65.5	↓-0.6
10/31 11:40	64.8	↓-0.7
10/31 11:50	64.2	↓-0.6
10/31 12:00	63.7	↓-0.5
10/31 12:10	63.2	↓-0.5
10/31 12:20	62.7	↓-0.5
10/31 12:30	62.3	↓-0.4
10/31 12:40	62.0	↓-0.3
10/31 12:50	61.7	↓-0.3
10/31 13:00	61.6	↓-0.1	干潮
10/31 13:10	61.5	↓-0.1	干潮
10/31 13:20	61.6	↑0.1
10/31 13:30	61.8	↑0.2
10/31 13:40	62.1	↑0.3
10/31 13:50	62.5	↑0.4
10/31 14:00	63.0	↑0.5
10/31 14:10	63.6	↑0.6
10/31 14:20	64.3	↑0.7
10/31 14:30	65.1	↑0.8
10/31 14:40	66.0	↑0.9
10/31 14:50	67.0	↑1.0
10/31 15:00	68.1	↑1.1
10/31 15:10	69.2	↑1.1
10/31 15:20	70.3	↑1.1
10/31 15:30	71.5	↑1.2
10/31 15:40	72.7	↑1.2
10/31 15:50	73.9	↑1.2
10/31 16:00	75.2	↑1.3
10/31 16:10	76.4	↑1.2
10/31 16:20	77.6	↑1.2
10/31 16:30	78.7	↑1.1
10/31 16:40	79.8	↑1.1
10/31 16:50	80.9	↑1.1
10/31 17:00	82.0	↑1.1
10/31 17:10	83.0	↑1.0
10/31 17:20	83.9	↑0.9
10/31 17:30	84.8	↑0.9
10/31 17:40	85.6	↑0.8
10/31 17:50	86.3	↑0.7
10/31 18:00	87.0	↑0.7
10/31 18:10	87.6	↑0.6
10/31 18:20	88.1	↑0.5
10/31 18:30	88.5	↑0.4
10/31 18:40	88.8	↑0.3
10/31 18:50	89.0	↑0.2
10/31 19:00	89.1	↑0.1	満潮
10/31 19:10	89.1	0
10/31 19:20	89.0	↓-0.1
10/31 19:30	88.7	↓-0.3
10/31 19:40	88.4	↓-0.3
10/31 19:50	87.8	↓-0.6
10/31 20:00	87.2	↓-0.6
10/31 20:10	86.4	↓-0.8
10/31 20:20	85.5	↓-0.9
10/31 20:30	84.4	↓-1.1
10/31 20:40	83.3	↓-1.1
10/31 20:50	82.0	↓-1.3
10/31 21:00	80.5	↓-1.5
10/31 21:10	79.0	↓-1.5
10/31 21:20	77.4	↓-1.6
10/31 21:30	75.7	↓-1.7
10/31 21:40	73.9	↓-1.8
10/31 21:50	72.0	↓-1.9
10/31 22:00	70.1	↓-1.9
10/31 22:10	68.1	↓-2.0
10/31 22:20	66.0	↓-2.1
10/31 22:30	63.9	↓-2.1
10/31 22:40	61.8	↓-2.1
10/31 22:50	59.7	↓-2.1
10/31 23:00	57.5	↓-2.2	最大潮位差
10/31 23:10	55.3	↓-2.2	最大潮位差
10/31 23:20	53.1	↓-2.2	最大潮位差
10/31 23:30	50.9	↓-2.2	最大潮位差
10/31 23:40	48.8	↓-2.1
10/31 23:50	46.6	↓-2.2	最大潮位差