12 (木)	01:56	08:00	13:02	20:10
	64cm	37cm	66cm	16cm
中潮 出 05:04 入 18:15 出 03:17 入 14:06

函館（北海道）2018年04月12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
4/12 00:00	56.3	↑1.4
4/12 00:10	57.5	↑1.2
4/12 00:20	58.7	↑1.2
4/12 00:30	59.7	↑1.0
4/12 00:40	60.6	↑0.9
4/12 00:50	61.4	↑0.8
4/12 01:00	62.1	↑0.7
4/12 01:10	62.6	↑0.5
4/12 01:20	63.1	↑0.5
4/12 01:30	63.4	↑0.3
4/12 01:40	63.6	↑0.2
4/12 01:50	63.7	↑0.1	満潮
4/12 02:00	63.7	0
4/12 02:10	63.6	↓-0.1
4/12 02:20	63.4	↓-0.2
4/12 02:30	63.1	↓-0.3
4/12 02:40	62.7	↓-0.4
4/12 02:50	62.2	↓-0.5
4/12 03:00	61.7	↓-0.5
4/12 03:10	61.0	↓-0.7
4/12 03:20	60.3	↓-0.7
4/12 03:30	59.4	↓-0.9
4/12 03:40	58.6	↓-0.8
4/12 03:50	57.6	↓-1.0
4/12 04:00	56.6	↓-1.0
4/12 04:10	55.6	↓-1.0
4/12 04:20	54.5	↓-1.1
4/12 04:30	53.4	↓-1.1
4/12 04:40	52.3	↓-1.1
4/12 04:50	51.1	↓-1.2
4/12 05:00	50.0	↓-1.1
4/12 05:10	48.9	↓-1.1
4/12 05:20	47.7	↓-1.2
4/12 05:30	46.7	↓-1.0
4/12 05:40	45.6	↓-1.1
4/12 05:50	44.5	↓-1.1
4/12 06:00	43.5	↓-1.0
4/12 06:10	42.6	↓-0.9
4/12 06:20	41.7	↓-0.9
4/12 06:30	40.8	↓-0.9
4/12 06:40	40.1	↓-0.7
4/12 06:50	39.3	↓-0.8
4/12 07:00	38.7	↓-0.6
4/12 07:10	38.1	↓-0.6
4/12 07:20	37.7	↓-0.4
4/12 07:30	37.3	↓-0.4
4/12 07:40	37.0	↓-0.3
4/12 07:50	36.8	↓-0.2	干潮
4/12 08:00	36.8	0	干潮
4/12 08:10	36.8	0
4/12 08:20	37.0	↑0.2
4/12 08:30	37.4	↑0.4
4/12 08:40	37.8	↑0.4
4/12 08:50	38.4	↑0.6
4/12 09:00	39.2	↑0.8
4/12 09:10	40.1	↑0.9
4/12 09:20	41.1	↑1.0
4/12 09:30	42.2	↑1.1
4/12 09:40	43.4	↑1.2
4/12 09:50	44.8	↑1.4
4/12 10:00	46.2	↑1.4
4/12 10:10	47.7	↑1.5
4/12 10:20	49.2	↑1.5
4/12 10:30	50.7	↑1.5
4/12 10:40	52.3	↑1.6
4/12 10:50	53.9	↑1.6
4/12 11:00	55.4	↑1.5
4/12 11:10	56.8	↑1.4
4/12 11:20	58.2	↑1.4
4/12 11:30	59.6	↑1.4
4/12 11:40	60.8	↑1.2
4/12 11:50	61.8	↑1.0
4/12 12:00	62.8	↑1.0
4/12 12:10	63.6	↑0.8
4/12 12:20	64.3	↑0.7
4/12 12:30	64.9	↑0.6
4/12 12:40	65.2	↑0.3
4/12 12:50	65.5	↑0.3
4/12 13:00	65.6	↑0.1	満潮
4/12 13:10	65.5	↓-0.1
4/12 13:20	65.3	↓-0.2
4/12 13:30	65.0	↓-0.3
4/12 13:40	64.5	↓-0.5
4/12 13:50	63.9	↓-0.6
4/12 14:00	63.2	↓-0.7
4/12 14:10	62.4	↓-0.8
4/12 14:20	61.4	↓-1.0
4/12 14:30	60.4	↓-1.0
4/12 14:40	59.2	↓-1.2
4/12 14:50	58.0	↓-1.2
4/12 15:00	56.6	↓-1.4
4/12 15:10	55.2	↓-1.4
4/12 15:20	53.7	↓-1.5
4/12 15:30	52.2	↓-1.5
4/12 15:40	50.5	↓-1.7
4/12 15:50	48.9	↓-1.6
4/12 16:00	47.1	↓-1.8
4/12 16:10	45.4	↓-1.7
4/12 16:20	43.6	↓-1.8
4/12 16:30	41.8	↓-1.8
4/12 16:40	40.0	↓-1.8
4/12 16:50	38.1	↓-1.9
4/12 17:00	36.3	↓-1.8
4/12 17:10	34.5	↓-1.8
4/12 17:20	32.8	↓-1.7
4/12 17:30	31.0	↓-1.8
4/12 17:40	29.4	↓-1.6
4/12 17:50	27.8	↓-1.6
4/12 18:00	26.2	↓-1.6
4/12 18:10	24.7	↓-1.5
4/12 18:20	23.3	↓-1.4
4/12 18:30	22.0	↓-1.3
4/12 18:40	20.8	↓-1.2
4/12 18:50	19.7	↓-1.1
4/12 19:00	18.7	↓-1.0
4/12 19:10	17.8	↓-0.9
4/12 19:20	17.0	↓-0.8
4/12 19:30	16.3	↓-0.7
4/12 19:40	15.8	↓-0.5
4/12 19:50	15.5	↓-0.3
4/12 20:00	15.2	↓-0.3	干潮
4/12 20:10	15.2	0	干潮
4/12 20:20	15.3	↑0.1
4/12 20:30	15.5	↑0.2
4/12 20:40	16.0	↑0.5
4/12 20:50	16.6	↑0.6
4/12 21:00	17.4	↑0.8
4/12 21:10	18.4	↑1.0
4/12 21:20	19.5	↑1.1
4/12 21:30	20.9	↑1.4
4/12 21:40	22.4	↑1.5
4/12 21:50	24.0	↑1.6
4/12 22:00	25.9	↑1.9
4/12 22:10	27.8	↑1.9
4/12 22:20	29.9	↑2.1
4/12 22:30	32.1	↑2.2
4/12 22:40	34.4	↑2.3
4/12 22:50	36.7	↑2.3
4/12 23:00	39.0	↑2.3
4/12 23:10	41.4	↑2.4	最大潮位差
4/12 23:20	43.8	↑2.4	最大潮位差
4/12 23:30	46.1	↑2.3
4/12 23:40	48.4	↑2.3
4/12 23:50	50.6	↑2.2