20 (土)	00:43	08:50	14:56	18:39
	27cm	1cm	11cm	8cm
中潮 出 04:52 入 18:26 出 03:53 入 15:21 潮干狩り ◎ 05:37～13:19

江差／桧山（北海道）2058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	25.8	↑0.2
4/20 00:10	26.0	↑0.2
4/20 00:20	26.1	↑0.1
4/20 00:30	26.2	↑0.1
4/20 00:40	26.3	↑0.1	満潮
4/20 00:50	26.2	↓-0.1
4/20 01:00	26.2	0
4/20 01:10	26.1	↓-0.1
4/20 01:20	25.9	↓-0.2
4/20 01:30	25.7	↓-0.2
4/20 01:40	25.4	↓-0.3
4/20 01:50	25.1	↓-0.3
4/20 02:00	24.7	↓-0.4
4/20 02:10	24.3	↓-0.4
4/20 02:20	23.8	↓-0.5
4/20 02:30	23.3	↓-0.5
4/20 02:40	22.8	↓-0.5
4/20 02:50	22.2	↓-0.6
4/20 03:00	21.5	↓-0.7
4/20 03:10	20.8	↓-0.7
4/20 03:20	20.1	↓-0.7
4/20 03:30	19.4	↓-0.7
4/20 03:40	18.6	↓-0.8
4/20 03:50	17.8	↓-0.8
4/20 04:00	17.0	↓-0.8
4/20 04:10	16.2	↓-0.8
4/20 04:20	15.3	↓-0.9	最大潮位差
4/20 04:30	14.5	↓-0.8
4/20 04:40	13.6	↓-0.9	最大潮位差
4/20 04:50	12.8	↓-0.8
4/20 05:00	11.9	↓-0.9	最大潮位差
4/20 05:10	11.1	↓-0.8
4/20 05:20	10.2	↓-0.9	最大潮位差
4/20 05:30	9.4	↓-0.8
4/20 05:40	8.6	↓-0.8
4/20 05:50	7.8	↓-0.8
4/20 06:00	7.0	↓-0.8
4/20 06:10	6.3	↓-0.7
4/20 06:20	5.6	↓-0.7
4/20 06:30	4.9	↓-0.7
4/20 06:40	4.3	↓-0.6
4/20 06:50	3.7	↓-0.6
4/20 07:00	3.2	↓-0.5
4/20 07:10	2.7	↓-0.5
4/20 07:20	2.2	↓-0.5
4/20 07:30	1.8	↓-0.4
4/20 07:40	1.4	↓-0.4
4/20 07:50	1.1	↓-0.3
4/20 08:00	0.9	↓-0.2
4/20 08:10	0.7	↓-0.2
4/20 08:20	0.5	↓-0.2
4/20 08:30	0.4	↓-0.1
4/20 08:40	0.3	↓-0.1	干潮
4/20 08:50	0.3	0	干潮
4/20 09:00	0.3	0
4/20 09:10	0.4	↑0.1
4/20 09:20	0.5	↑0.1
4/20 09:30	0.7	↑0.2
4/20 09:40	0.9	↑0.2
4/20 09:50	1.1	↑0.2
4/20 10:00	1.4	↑0.3
4/20 10:10	1.7	↑0.3
4/20 10:20	2.0	↑0.3
4/20 10:30	2.3	↑0.3
4/20 10:40	2.7	↑0.4
4/20 10:50	3.1	↑0.4
4/20 11:00	3.5	↑0.4
4/20 11:10	3.9	↑0.4
4/20 11:20	4.3	↑0.4
4/20 11:30	4.8	↑0.5
4/20 11:40	5.2	↑0.4
4/20 11:50	5.6	↑0.4
4/20 12:00	6.0	↑0.4
4/20 12:10	6.5	↑0.5
4/20 12:20	6.9	↑0.4
4/20 12:30	7.3	↑0.4
4/20 12:40	7.6	↑0.3
4/20 12:50	8.0	↑0.4
4/20 13:00	8.3	↑0.3
4/20 13:10	8.6	↑0.3
4/20 13:20	8.9	↑0.3
4/20 13:30	9.2	↑0.3
4/20 13:40	9.4	↑0.2
4/20 13:50	9.6	↑0.2
4/20 14:00	9.8	↑0.2
4/20 14:10	9.9	↑0.1
4/20 14:20	10.0	↑0.1
4/20 14:30	10.1	↑0.1
4/20 14:40	10.2	↑0.1
4/20 14:50	10.2	0	満潮
4/20 15:00	10.2	0
4/20 15:10	10.2	0
4/20 15:20	10.1	↓-0.1
4/20 15:30	10.1	0
4/20 15:40	10.0	↓-0.1
4/20 15:50	9.8	↓-0.2
4/20 16:00	9.7	↓-0.1
4/20 16:10	9.6	↓-0.1
4/20 16:20	9.4	↓-0.2
4/20 16:30	9.2	↓-0.2
4/20 16:40	9.1	↓-0.1
4/20 16:50	8.9	↓-0.2
4/20 17:00	8.7	↓-0.2
4/20 17:10	8.6	↓-0.1
4/20 17:20	8.4	↓-0.2
4/20 17:30	8.2	↓-0.2
4/20 17:40	8.1	↓-0.1
4/20 17:50	8.0	↓-0.1
4/20 18:00	7.9	↓-0.1
4/20 18:10	7.8	↓-0.1
4/20 18:20	7.7	↓-0.1
4/20 18:30	7.7	0	干潮
4/20 18:40	7.7	0
4/20 18:50	7.7	0
4/20 19:00	7.7	0
4/20 19:10	7.8	↑0.1
4/20 19:20	8.0	↑0.2
4/20 19:30	8.1	↑0.1
4/20 19:40	8.3	↑0.2
4/20 19:50	8.5	↑0.2
4/20 20:00	8.8	↑0.3
4/20 20:10	9.1	↑0.3
4/20 20:20	9.5	↑0.4
4/20 20:30	9.9	↑0.4
4/20 20:40	10.3	↑0.4
4/20 20:50	10.7	↑0.4
4/20 21:00	11.2	↑0.5
4/20 21:10	11.7	↑0.5
4/20 21:20	12.3	↑0.6
4/20 21:30	12.8	↑0.5
4/20 21:40	13.4	↑0.6
4/20 21:50	14.1	↑0.7
4/20 22:00	14.7	↑0.6
4/20 22:10	15.3	↑0.6
4/20 22:20	16.0	↑0.7
4/20 22:30	16.7	↑0.7
4/20 22:40	17.3	↑0.6
4/20 22:50	18.0	↑0.7
4/20 23:00	18.7	↑0.7
4/20 23:10	19.3	↑0.6
4/20 23:20	20.0	↑0.7
4/20 23:30	20.6	↑0.6
4/20 23:40	21.2	↑0.6
4/20 23:50	21.8	↑0.6