20 (火)	07:10	01:09	23:40	15:21
	72cm	51cm	55cm	17cm
小潮 出 04:51 入 18:24 出 10:14 入 01:02 潮干狩り ○ 13:52～17:03

函館（北海道）2021年04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
4/20 00:00	52.0	↓-0.3
4/20 00:10	51.7	↓-0.3
4/20 00:20	51.4	↓-0.3
4/20 00:30	51.2	↓-0.2
4/20 00:40	51.0	↓-0.2
4/20 00:50	50.9	↓-0.1
4/20 01:00	50.8	↓-0.1	干潮
4/20 01:10	50.8	0
4/20 01:20	50.9	↑0.1
4/20 01:30	51.0	↑0.1
4/20 01:40	51.2	↑0.2
4/20 01:50	51.4	↑0.2
4/20 02:00	51.8	↑0.4
4/20 02:10	52.2	↑0.4
4/20 02:20	52.7	↑0.5
4/20 02:30	53.3	↑0.6
4/20 02:40	54.0	↑0.7
4/20 02:50	54.7	↑0.7
4/20 03:00	55.5	↑0.8
4/20 03:10	56.3	↑0.8
4/20 03:20	57.2	↑0.9
4/20 03:30	58.2	↑1.0
4/20 03:40	59.1	↑0.9
4/20 03:50	60.1	↑1.0
4/20 04:00	61.1	↑1.0
4/20 04:10	62.0	↑0.9
4/20 04:20	63.0	↑1.0
4/20 04:30	63.9	↑0.9
4/20 04:40	64.8	↑0.9
4/20 04:50	65.6	↑0.8
4/20 05:00	66.4	↑0.8
4/20 05:10	67.2	↑0.8
4/20 05:20	67.9	↑0.7
4/20 05:30	68.5	↑0.6
4/20 05:40	69.1	↑0.6
4/20 05:50	69.6	↑0.5
4/20 06:00	70.1	↑0.5
4/20 06:10	70.5	↑0.4
4/20 06:20	70.9	↑0.4
4/20 06:30	71.2	↑0.3
4/20 06:40	71.4	↑0.2
4/20 06:50	71.6	↑0.2
4/20 07:00	71.7	↑0.1	満潮
4/20 07:10	71.7	0	満潮
4/20 07:20	71.6	↓-0.1
4/20 07:30	71.5	↓-0.1
4/20 07:40	71.3	↓-0.2
4/20 07:50	71.0	↓-0.3
4/20 08:00	70.7	↓-0.3
4/20 08:10	70.2	↓-0.5
4/20 08:20	69.6	↓-0.6
4/20 08:30	69.0	↓-0.6
4/20 08:40	68.2	↓-0.8
4/20 08:50	67.4	↓-0.8
4/20 09:00	66.4	↓-1.0
4/20 09:10	65.4	↓-1.0
4/20 09:20	64.2	↓-1.2
4/20 09:30	63.0	↓-1.2
4/20 09:40	61.7	↓-1.3
4/20 09:50	60.3	↓-1.4
4/20 10:00	58.8	↓-1.5
4/20 10:10	57.3	↓-1.5
4/20 10:20	55.7	↓-1.6
4/20 10:30	54.0	↓-1.7
4/20 10:40	52.4	↓-1.6
4/20 10:50	50.6	↓-1.8	最大潮位差
4/20 11:00	48.9	↓-1.7
4/20 11:10	47.1	↓-1.8	最大潮位差
4/20 11:20	45.3	↓-1.8	最大潮位差
4/20 11:30	43.6	↓-1.7
4/20 11:40	41.8	↓-1.8	最大潮位差
4/20 11:50	40.0	↓-1.8	最大潮位差
4/20 12:00	38.2	↓-1.8	最大潮位差
4/20 12:10	36.5	↓-1.7
4/20 12:20	34.8	↓-1.7
4/20 12:30	33.1	↓-1.7
4/20 12:40	31.5	↓-1.6
4/20 12:50	29.9	↓-1.6
4/20 13:00	28.3	↓-1.6
4/20 13:10	26.9	↓-1.4
4/20 13:20	25.5	↓-1.4
4/20 13:30	24.2	↓-1.3
4/20 13:40	23.0	↓-1.2
4/20 13:50	21.8	↓-1.2
4/20 14:00	20.8	↓-1.0
4/20 14:10	19.9	↓-0.9
4/20 14:20	19.1	↓-0.8
4/20 14:30	18.5	↓-0.6
4/20 14:40	17.9	↓-0.6
4/20 14:50	17.5	↓-0.4
4/20 15:00	17.2	↓-0.3
4/20 15:10	17.0	↓-0.2
4/20 15:20	17.0	0	干潮
4/20 15:30	17.0	0
4/20 15:40	17.2	↑0.2
4/20 15:50	17.4	↑0.2
4/20 16:00	17.8	↑0.4
4/20 16:10	18.3	↑0.5
4/20 16:20	18.8	↑0.5
4/20 16:30	19.4	↑0.6
4/20 16:40	20.1	↑0.7
4/20 16:50	20.8	↑0.7
4/20 17:00	21.6	↑0.8
4/20 17:10	22.4	↑0.8
4/20 17:20	23.2	↑0.8
4/20 17:30	24.1	↑0.9
4/20 17:40	25.1	↑1.0
4/20 17:50	26.1	↑1.0
4/20 18:00	27.1	↑1.0
4/20 18:10	28.1	↑1.0
4/20 18:20	29.2	↑1.1
4/20 18:30	30.3	↑1.1
4/20 18:40	31.5	↑1.2
4/20 18:50	32.6	↑1.1
4/20 19:00	33.8	↑1.2
4/20 19:10	35.1	↑1.3
4/20 19:20	36.3	↑1.2
4/20 19:30	37.5	↑1.2
4/20 19:40	38.8	↑1.3
4/20 19:50	40.0	↑1.2
4/20 20:00	41.3	↑1.3
4/20 20:10	42.5	↑1.2
4/20 20:20	43.7	↑1.2
4/20 20:30	44.8	↑1.1
4/20 20:40	45.9	↑1.1
4/20 20:50	47.0	↑1.1
4/20 21:00	48.0	↑1.0
4/20 21:10	48.9	↑0.9
4/20 21:20	49.8	↑0.9
4/20 21:30	50.6	↑0.8
4/20 21:40	51.3	↑0.7
4/20 21:50	51.9	↑0.6
4/20 22:00	52.5	↑0.6
4/20 22:10	53.0	↑0.5
4/20 22:20	53.4	↑0.4
4/20 22:30	53.8	↑0.4
4/20 22:40	54.1	↑0.3
4/20 22:50	54.3	↑0.2
4/20 23:00	54.5	↑0.2
4/20 23:10	54.6	↑0.1
4/20 23:20	54.7	↑0.1
4/20 23:30	54.8	↑0.1	満潮
4/20 23:40	54.8	0	満潮
4/20 23:50	54.8	0