20 (水)	04:29	09:58	15:07	22:16
	23cm	12cm	21cm	-5cm
大潮 出 04:52 入 18:26 出 04:46 入 18:42

江差／桧山（北海道）2061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	5.5	↑0.8
4/20 00:10	6.4	↑0.9
4/20 00:20	7.3	↑0.9
4/20 00:30	8.2	↑0.9
4/20 00:40	9.1	↑0.9
4/20 00:50	10.0	↑0.9
4/20 01:00	10.9	↑0.9
4/20 01:10	11.9	↑1.0	最大潮位差
4/20 01:20	12.7	↑0.8
4/20 01:30	13.6	↑0.9
4/20 01:40	14.5	↑0.9
4/20 01:50	15.3	↑0.8
4/20 02:00	16.1	↑0.8
4/20 02:10	16.9	↑0.8
4/20 02:20	17.6	↑0.7
4/20 02:30	18.3	↑0.7
4/20 02:40	19.0	↑0.7
4/20 02:50	19.6	↑0.6
4/20 03:00	20.1	↑0.5
4/20 03:10	20.6	↑0.5
4/20 03:20	21.0	↑0.4
4/20 03:30	21.4	↑0.4
4/20 03:40	21.7	↑0.3
4/20 03:50	22.0	↑0.3
4/20 04:00	22.1	↑0.1
4/20 04:10	22.3	↑0.2
4/20 04:20	22.4	↑0.1	満潮
4/20 04:30	22.4	0
4/20 04:40	22.3	↓-0.1
4/20 04:50	22.2	↓-0.1
4/20 05:00	22.1	↓-0.1
4/20 05:10	21.9	↓-0.2
4/20 05:20	21.6	↓-0.3
4/20 05:30	21.3	↓-0.3
4/20 05:40	21.0	↓-0.3
4/20 05:50	20.6	↓-0.4
4/20 06:00	20.2	↓-0.4
4/20 06:10	19.8	↓-0.4
4/20 06:20	19.3	↓-0.5
4/20 06:30	18.8	↓-0.5
4/20 06:40	18.3	↓-0.5
4/20 06:50	17.8	↓-0.5
4/20 07:00	17.3	↓-0.5
4/20 07:10	16.7	↓-0.6
4/20 07:20	16.2	↓-0.5
4/20 07:30	15.7	↓-0.5
4/20 07:40	15.2	↓-0.5
4/20 07:50	14.7	↓-0.5
4/20 08:00	14.2	↓-0.5
4/20 08:10	13.8	↓-0.4
4/20 08:20	13.3	↓-0.5
4/20 08:30	13.0	↓-0.3
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	11.8	↓-0.2
4/20 09:20	11.6	↓-0.2
4/20 09:30	11.4	↓-0.2
4/20 09:40	11.3	↓-0.1
4/20 09:50	11.3	0	干潮
4/20 10:00	11.3	0
4/20 10:10	11.3	0
4/20 10:20	11.4	↑0.1
4/20 10:30	11.5	↑0.1
4/20 10:40	11.7	↑0.2
4/20 10:50	11.9	↑0.2
4/20 11:00	12.2	↑0.3
4/20 11:10	12.5	↑0.3
4/20 11:20	12.8	↑0.3
4/20 11:30	13.1	↑0.3
4/20 11:40	13.5	↑0.4
4/20 11:50	14.0	↑0.5
4/20 12:00	14.4	↑0.4
4/20 12:10	14.8	↑0.4
4/20 12:20	15.3	↑0.5
4/20 12:30	15.8	↑0.5
4/20 12:40	16.3	↑0.5
4/20 12:50	16.7	↑0.4
4/20 13:00	17.2	↑0.5
4/20 13:10	17.7	↑0.5
4/20 13:20	18.1	↑0.4
4/20 13:30	18.5	↑0.4
4/20 13:40	18.9	↑0.4
4/20 13:50	19.3	↑0.4
4/20 14:00	19.6	↑0.3
4/20 14:10	19.9	↑0.3
4/20 14:20	20.2	↑0.3
4/20 14:30	20.4	↑0.2
4/20 14:40	20.6	↑0.2
4/20 14:50	20.7	↑0.1
4/20 15:00	20.8	↑0.1	満潮
4/20 15:10	20.8	0
4/20 15:20	20.7	↓-0.1
4/20 15:30	20.6	↓-0.1
4/20 15:40	20.4	↓-0.2
4/20 15:50	20.2	↓-0.2
4/20 16:00	19.9	↓-0.3
4/20 16:10	19.6	↓-0.3
4/20 16:20	19.2	↓-0.4
4/20 16:30	18.7	↓-0.5
4/20 16:40	18.2	↓-0.5
4/20 16:50	17.6	↓-0.6
4/20 17:00	16.9	↓-0.7
4/20 17:10	16.3	↓-0.6
4/20 17:20	15.5	↓-0.8
4/20 17:30	14.8	↓-0.7
4/20 17:40	13.9	↓-0.9
4/20 17:50	13.1	↓-0.8
4/20 18:00	12.2	↓-0.9
4/20 18:10	11.3	↓-0.9
4/20 18:20	10.4	↓-0.9
4/20 18:30	9.4	↓-1.0	最大潮位差
4/20 18:40	8.5	↓-0.9
4/20 18:50	7.5	↓-1.0	最大潮位差
4/20 19:00	6.6	↓-0.9
4/20 19:10	5.6	↓-1.0	最大潮位差
4/20 19:20	4.7	↓-0.9
4/20 19:30	3.7	↓-1.0	最大潮位差
4/20 19:40	2.8	↓-0.9
4/20 19:50	2.0	↓-0.8
4/20 20:00	1.1	↓-0.9
4/20 20:10	0.3	↓-0.8
4/20 20:20	-0.5	↓-0.8
4/20 20:30	-1.2	↓-0.7
4/20 20:40	-1.8	↓-0.6
4/20 20:50	-2.5	↓-0.7
4/20 21:00	-3.0	↓-0.5
4/20 21:10	-3.5	↓-0.5
4/20 21:20	-3.9	↓-0.4
4/20 21:30	-4.3	↓-0.4
4/20 21:40	-4.6	↓-0.3
4/20 21:50	-4.8	↓-0.2
4/20 22:00	-4.9	↓-0.1
4/20 22:10	-5.0	↓-0.1	干潮
4/20 22:20	-5.0	0
4/20 22:30	-4.9	↑0.1
4/20 22:40	-4.8	↑0.1
4/20 22:50	-4.6	↑0.2
4/20 23:00	-4.3	↑0.3
4/20 23:10	-3.9	↑0.4
4/20 23:20	-3.5	↑0.4
4/20 23:30	-3.0	↑0.5
4/20 23:40	-2.5	↑0.5
4/20 23:50	-1.9	↑0.6