20 (日)	04:09	09:59	15:02	21:58
	24cm	11cm	20cm	-4cm
大潮 出 04:53 入 18:26 出 04:51 入 18:42

江差／桧山（北海道）2042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	8.2	↑0.9	最大潮位差
4/20 00:10	9.1	↑0.9	最大潮位差
4/20 00:20	10.0	↑0.9	最大潮位差
4/20 00:30	10.9	↑0.9	最大潮位差
4/20 00:40	11.8	↑0.9	最大潮位差
4/20 00:50	12.7	↑0.9	最大潮位差
4/20 01:00	13.5	↑0.8
4/20 01:10	14.4	↑0.9	最大潮位差
4/20 01:20	15.3	↑0.9	最大潮位差
4/20 01:30	16.1	↑0.8
4/20 01:40	16.9	↑0.8
4/20 01:50	17.7	↑0.8
4/20 02:00	18.4	↑0.7
4/20 02:10	19.1	↑0.7
4/20 02:20	19.8	↑0.7
4/20 02:30	20.4	↑0.6
4/20 02:40	20.9	↑0.5
4/20 02:50	21.4	↑0.5
4/20 03:00	21.8	↑0.4
4/20 03:10	22.2	↑0.4
4/20 03:20	22.5	↑0.3
4/20 03:30	22.8	↑0.3
4/20 03:40	23.0	↑0.2
4/20 03:50	23.1	↑0.1
4/20 04:00	23.2	↑0.1	満潮
4/20 04:10	23.2	0
4/20 04:20	23.2	0
4/20 04:30	23.1	↓-0.1
4/20 04:40	22.9	↓-0.2
4/20 04:50	22.7	↓-0.2
4/20 05:00	22.5	↓-0.2
4/20 05:10	22.2	↓-0.3
4/20 05:20	21.8	↓-0.4
4/20 05:30	21.4	↓-0.4
4/20 05:40	21.0	↓-0.4
4/20 05:50	20.5	↓-0.5
4/20 06:00	20.0	↓-0.5
4/20 06:10	19.5	↓-0.5
4/20 06:20	18.9	↓-0.6
4/20 06:30	18.3	↓-0.6
4/20 06:40	17.7	↓-0.6
4/20 06:50	17.2	↓-0.5
4/20 07:00	16.6	↓-0.6
4/20 07:10	16.0	↓-0.6
4/20 07:20	15.4	↓-0.6
4/20 07:30	14.8	↓-0.6
4/20 07:40	14.3	↓-0.5
4/20 07:50	13.7	↓-0.6
4/20 08:00	13.2	↓-0.5
4/20 08:10	12.7	↓-0.5
4/20 08:20	12.3	↓-0.4
4/20 08:30	11.9	↓-0.4
4/20 08:40	11.5	↓-0.4
4/20 08:50	11.1	↓-0.4
4/20 09:00	10.9	↓-0.2
4/20 09:10	10.6	↓-0.3
4/20 09:20	10.4	↓-0.2
4/20 09:30	10.2	↓-0.2
4/20 09:40	10.1	↓-0.1
4/20 09:50	10.1	0	干潮
4/20 10:00	10.0	↓-0.1
4/20 10:10	10.1	↑0.1
4/20 10:20	10.2	↑0.1
4/20 10:30	10.3	↑0.1
4/20 10:40	10.5	↑0.2
4/20 10:50	10.7	↑0.2
4/20 11:00	10.9	↑0.2
4/20 11:10	11.2	↑0.3
4/20 11:20	11.5	↑0.3
4/20 11:30	11.9	↑0.4
4/20 11:40	12.3	↑0.4
4/20 11:50	12.7	↑0.4
4/20 12:00	13.1	↑0.4
4/20 12:10	13.6	↑0.5
4/20 12:20	14.0	↑0.4
4/20 12:30	14.5	↑0.5
4/20 12:40	14.9	↑0.4
4/20 12:50	15.4	↑0.5
4/20 13:00	15.8	↑0.4
4/20 13:10	16.3	↑0.5
4/20 13:20	16.7	↑0.4
4/20 13:30	17.1	↑0.4
4/20 13:40	17.5	↑0.4
4/20 13:50	17.8	↑0.3
4/20 14:00	18.1	↑0.3
4/20 14:10	18.4	↑0.3
4/20 14:20	18.6	↑0.2
4/20 14:30	18.8	↑0.2
4/20 14:40	18.9	↑0.1
4/20 14:50	19.0	↑0.1
4/20 15:00	19.1	↑0.1	満潮
4/20 15:10	19.0	↓-0.1
4/20 15:20	19.0	0
4/20 15:30	18.8	↓-0.2
4/20 15:40	18.6	↓-0.2
4/20 15:50	18.4	↓-0.2
4/20 16:00	18.1	↓-0.3
4/20 16:10	17.7	↓-0.4
4/20 16:20	17.3	↓-0.4
4/20 16:30	16.8	↓-0.5
4/20 16:40	16.3	↓-0.5
4/20 16:50	15.7	↓-0.6
4/20 17:00	15.1	↓-0.6
4/20 17:10	14.4	↓-0.7
4/20 17:20	13.7	↓-0.7
4/20 17:30	13.0	↓-0.7
4/20 17:40	12.2	↓-0.8
4/20 17:50	11.4	↓-0.8
4/20 18:00	10.6	↓-0.8
4/20 18:10	9.7	↓-0.9	最大潮位差
4/20 18:20	8.8	↓-0.9	最大潮位差
4/20 18:30	8.0	↓-0.8
4/20 18:40	7.1	↓-0.9	最大潮位差
4/20 18:50	6.2	↓-0.9	最大潮位差
4/20 19:00	5.3	↓-0.9	最大潮位差
4/20 19:10	4.5	↓-0.8
4/20 19:20	3.6	↓-0.9	最大潮位差
4/20 19:30	2.8	↓-0.8
4/20 19:40	2.0	↓-0.8
4/20 19:50	1.2	↓-0.8
4/20 20:00	0.5	↓-0.7
4/20 20:10	-0.2	↓-0.7
4/20 20:20	-0.9	↓-0.7
4/20 20:30	-1.4	↓-0.5
4/20 20:40	-2.0	↓-0.6
4/20 20:50	-2.5	↓-0.5
4/20 21:00	-2.9	↓-0.4
4/20 21:10	-3.2	↓-0.3
4/20 21:20	-3.5	↓-0.3
4/20 21:30	-3.8	↓-0.3
4/20 21:40	-3.9	↓-0.1
4/20 21:50	-4.0	↓-0.1	干潮
4/20 22:00	-4.0	0
4/20 22:10	-4.0	0
4/20 22:20	-3.8	↑0.2
4/20 22:30	-3.6	↑0.2
4/20 22:40	-3.4	↑0.2
4/20 22:50	-3.0	↑0.4
4/20 23:00	-2.6	↑0.4
4/20 23:10	-2.2	↑0.4
4/20 23:20	-1.6	↑0.6
4/20 23:30	-1.1	↑0.5
4/20 23:40	-0.4	↑0.7
4/20 23:50	0.3	↑0.7