20 (日)	05:34	10:15	16:11	23:35
	19cm	11cm	26cm	-4cm
大潮 出 04:52 入 18:26 出 05:57 入 20:03

江差／桧山（北海道）2053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	-1.8	↑0.5
4/20 00:10	-1.2	↑0.6
4/20 00:20	-0.7	↑0.5
4/20 00:30	0.0	↑0.7
4/20 00:40	0.7	0
4/20 00:50	1.4	↑0.7
4/20 01:00	2.1	↑0.7
4/20 01:10	2.9	↑0.8
4/20 01:20	3.7	↑0.8
4/20 01:30	4.5	↑0.8
4/20 01:40	5.4	↑0.9
4/20 01:50	6.2	↑0.8
4/20 02:00	7.1	↑0.9
4/20 02:10	7.9	↑0.8
4/20 02:20	8.8	↑0.9
4/20 02:30	9.6	↑0.8
4/20 02:40	10.4	↑0.8
4/20 02:50	11.2	↑0.8
4/20 03:00	12.0	↑0.8
4/20 03:10	12.7	↑0.7
4/20 03:20	13.4	↑0.7
4/20 03:30	14.1	↑0.7
4/20 03:40	14.7	↑0.6
4/20 03:50	15.3	↑0.6
4/20 04:00	15.8	↑0.5
4/20 04:10	16.3	↑0.5
4/20 04:20	16.7	↑0.4
4/20 04:30	17.1	↑0.4
4/20 04:40	17.4	↑0.3
4/20 04:50	17.6	↑0.2
4/20 05:00	17.8	↑0.2
4/20 05:10	18.0	↑0.2
4/20 05:20	18.1	↑0.1
4/20 05:30	18.1	0	満潮
4/20 05:40	18.1	0
4/20 05:50	18.0	↓-0.1
4/20 06:00	17.9	↓-0.1
4/20 06:10	17.8	↓-0.1
4/20 06:20	17.6	↓-0.2
4/20 06:30	17.4	↓-0.2
4/20 06:40	17.1	↓-0.3
4/20 06:50	16.8	↓-0.3
4/20 07:00	16.4	↓-0.4
4/20 07:10	16.1	↓-0.3
4/20 07:20	15.7	↓-0.4
4/20 07:30	15.3	↓-0.4
4/20 07:40	14.9	↓-0.4
4/20 07:50	14.5	↓-0.4
4/20 08:00	14.1	↓-0.4
4/20 08:10	13.7	↓-0.4
4/20 08:20	13.4	↓-0.3
4/20 08:30	13.0	↓-0.4
4/20 08:40	12.6	↓-0.4
4/20 08:50	12.3	↓-0.3
4/20 09:00	12.0	↓-0.3
4/20 09:10	11.7	↓-0.3
4/20 09:20	11.5	↓-0.2
4/20 09:30	11.2	↓-0.3
4/20 09:40	11.1	↓-0.1
4/20 09:50	10.9	↓-0.2
4/20 10:00	10.9	0
4/20 10:10	10.8	↓-0.1	干潮
4/20 10:20	10.8	0
4/20 10:30	10.9	↑0.1
4/20 10:40	11.0	↑0.1
4/20 10:50	11.1	↑0.1
4/20 11:00	11.3	↑0.2
4/20 11:10	11.6	↑0.3
4/20 11:20	11.9	↑0.3
4/20 11:30	12.2	↑0.3
4/20 11:40	12.6	↑0.4
4/20 11:50	13.0	↑0.4
4/20 12:00	13.5	↑0.5
4/20 12:10	14.0	↑0.5
4/20 12:20	14.5	↑0.5
4/20 12:30	15.1	↑0.6
4/20 12:40	15.6	↑0.5
4/20 12:50	16.2	↑0.6
4/20 13:00	16.9	↑0.7
4/20 13:10	17.5	↑0.6
4/20 13:20	18.1	↑0.6
4/20 13:30	18.8	↑0.7
4/20 13:40	19.4	↑0.6
4/20 13:50	20.0	↑0.6
4/20 14:00	20.6	↑0.6
4/20 14:10	21.2	↑0.6
4/20 14:20	21.8	↑0.6
4/20 14:30	22.3	↑0.5
4/20 14:40	22.8	↑0.5
4/20 14:50	23.3	↑0.5
4/20 15:00	23.7	↑0.4
4/20 15:10	24.1	↑0.4
4/20 15:20	24.5	↑0.4
4/20 15:30	24.7	↑0.2
4/20 15:40	25.0	↑0.3
4/20 15:50	25.1	↑0.1
4/20 16:00	25.2	↑0.1
4/20 16:10	25.3	↑0.1	満潮
4/20 16:20	25.2	↓-0.1
4/20 16:30	25.1	↓-0.1
4/20 16:40	24.9	↓-0.2
4/20 16:50	24.7	↓-0.2
4/20 17:00	24.4	↓-0.3
4/20 17:10	24.0	↓-0.4
4/20 17:20	23.6	↓-0.4
4/20 17:30	23.1	↓-0.5
4/20 17:40	22.5	↓-0.6
4/20 17:50	21.9	↓-0.6
4/20 18:00	21.2	↓-0.7
4/20 18:10	20.4	↓-0.8
4/20 18:20	19.6	↓-0.8
4/20 18:30	18.7	↓-0.9
4/20 18:40	17.8	↓-0.9
4/20 18:50	16.9	↓-0.9
4/20 19:00	15.9	↓-1.0
4/20 19:10	14.9	↓-1.0
4/20 19:20	13.9	↓-1.0
4/20 19:30	12.8	↓-1.1	最大潮位差
4/20 19:40	11.8	↓-1.0
4/20 19:50	10.7	↓-1.1	最大潮位差
4/20 20:00	9.6	↓-1.1	最大潮位差
4/20 20:10	8.5	↓-1.1	最大潮位差
4/20 20:20	7.5	↓-1.0
4/20 20:30	6.4	↓-1.1	最大潮位差
4/20 20:40	5.4	↓-1.0
4/20 20:50	4.4	↓-1.0
4/20 21:00	3.4	↓-1.0
4/20 21:10	2.4	↓-1.0
4/20 21:20	1.5	↓-0.9
4/20 21:30	0.7	↓-0.8
4/20 21:40	-0.1	↓-0.8
4/20 21:50	-0.9	↓-0.8
4/20 22:00	-1.6	↓-0.7
4/20 22:10	-2.2	↓-0.6
4/20 22:20	-2.8	↓-0.6
4/20 22:30	-3.3	↓-0.5
4/20 22:40	-3.7	↓-0.4
4/20 22:50	-4.0	↓-0.3
4/20 23:00	-4.3	↓-0.3
4/20 23:10	-4.5	↓-0.2
4/20 23:20	-4.7	↓-0.2
4/20 23:30	-4.7	0	干潮
4/20 23:40	-4.7	0
4/20 23:50	-4.7	0