20 (木)	13:56	07:53	-	17:05
	10cm	2cm	-	8cm
若潮 出 04:52 入 18:26 出 02:31 入 14:02 潮干狩り ◎ 04:52～13:07

江差／桧山（北海道）2028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	25.3	↓-0.1
4/20 00:10	25.1	↓-0.2
4/20 00:20	24.9	↓-0.2
4/20 00:30	24.6	↓-0.3
4/20 00:40	24.3	↓-0.3
4/20 00:50	23.9	↓-0.4
4/20 01:00	23.5	↓-0.4
4/20 01:10	23.1	↓-0.4
4/20 01:20	22.6	↓-0.5
4/20 01:30	22.1	↓-0.5
4/20 01:40	21.6	↓-0.5
4/20 01:50	21.0	↓-0.6
4/20 02:00	20.4	↓-0.6
4/20 02:10	19.8	↓-0.6
4/20 02:20	19.1	↓-0.7
4/20 02:30	18.4	↓-0.7
4/20 02:40	17.7	↓-0.7
4/20 02:50	17.0	↓-0.7
4/20 03:00	16.3	↓-0.7
4/20 03:10	15.5	↓-0.8	最大潮位差
4/20 03:20	14.8	↓-0.7
4/20 03:30	14.0	↓-0.8	最大潮位差
4/20 03:40	13.3	↓-0.7
4/20 03:50	12.5	↓-0.8	最大潮位差
4/20 04:00	11.8	↓-0.7
4/20 04:10	11.1	↓-0.7
4/20 04:20	10.3	↓-0.8	最大潮位差
4/20 04:30	9.6	↓-0.7
4/20 04:40	8.9	↓-0.7
4/20 04:50	8.3	↓-0.6
4/20 05:00	7.6	↓-0.7
4/20 05:10	7.0	↓-0.6
4/20 05:20	6.4	↓-0.6
4/20 05:30	5.9	↓-0.5
4/20 05:40	5.3	↓-0.6
4/20 05:50	4.8	↓-0.5
4/20 06:00	4.4	↓-0.4
4/20 06:10	4.0	↓-0.4
4/20 06:20	3.6	↓-0.4
4/20 06:30	3.2	↓-0.4
4/20 06:40	2.9	↓-0.3
4/20 06:50	2.7	↓-0.2
4/20 07:00	2.4	↓-0.3
4/20 07:10	2.3	↓-0.1
4/20 07:20	2.1	↓-0.2
4/20 07:30	2.0	↓-0.1
4/20 07:40	2.0	0
4/20 07:50	1.9	↓-0.1	干潮
4/20 08:00	1.9	0
4/20 08:10	2.0	↑0.1
4/20 08:20	2.1	↑0.1
4/20 08:30	2.2	↑0.1
4/20 08:40	2.3	↑0.1
4/20 08:50	2.5	↑0.2
4/20 09:00	2.7	↑0.2
4/20 09:10	2.9	↑0.2
4/20 09:20	3.1	↑0.2
4/20 09:30	3.4	↑0.3
4/20 09:40	3.7	↑0.3
4/20 09:50	4.0	↑0.3
4/20 10:00	4.3	↑0.3
4/20 10:10	4.6	↑0.3
4/20 10:20	4.9	↑0.3
4/20 10:30	5.2	↑0.3
4/20 10:40	5.5	↑0.3
4/20 10:50	5.8	↑0.3
4/20 11:00	6.1	↑0.3
4/20 11:10	6.4	↑0.3
4/20 11:20	6.7	↑0.3
4/20 11:30	7.0	↑0.3
4/20 11:40	7.3	↑0.3
4/20 11:50	7.5	↑0.2
4/20 12:00	7.8	↑0.3
4/20 12:10	8.0	↑0.2
4/20 12:20	8.2	↑0.2
4/20 12:30	8.4	↑0.2
4/20 12:40	8.5	↑0.1
4/20 12:50	8.7	↑0.2
4/20 13:00	8.8	↑0.1
4/20 13:10	8.9	↑0.1
4/20 13:20	9.0	↑0.1
4/20 13:30	9.0	0
4/20 13:40	9.1	↑0.1
4/20 13:50	9.1	0	満潮
4/20 14:00	9.1	0
4/20 14:10	9.1	0
4/20 14:20	9.0	↓-0.1
4/20 14:30	9.0	0
4/20 14:40	8.9	↓-0.1
4/20 14:50	8.9	0
4/20 15:00	8.8	↓-0.1
4/20 15:10	8.7	↓-0.1
4/20 15:20	8.6	↓-0.1
4/20 15:30	8.5	↓-0.1
4/20 15:40	8.4	↓-0.1
4/20 15:50	8.3	↓-0.1
4/20 16:00	8.2	↓-0.1
4/20 16:10	8.1	↓-0.1
4/20 16:20	8.1	0
4/20 16:30	8.0	↓-0.1
4/20 16:40	7.9	↓-0.1
4/20 16:50	7.9	0
4/20 17:00	7.9	0	干潮
4/20 17:10	7.9	0
4/20 17:20	7.9	0
4/20 17:30	8.0	↑0.1
4/20 17:40	8.0	0
4/20 17:50	8.1	↑0.1
4/20 18:00	8.3	↑0.2
4/20 18:10	8.4	↑0.1
4/20 18:20	8.6	↑0.2
4/20 18:30	8.8	↑0.2
4/20 18:40	9.0	↑0.2
4/20 18:50	9.3	↑0.3
4/20 19:00	9.6	↑0.3
4/20 19:10	9.9	↑0.3
4/20 19:20	10.3	↑0.4
4/20 19:30	10.7	↑0.4
4/20 19:40	11.1	↑0.4
4/20 19:50	11.5	↑0.4
4/20 20:00	12.0	↑0.5
4/20 20:10	12.5	↑0.5
4/20 20:20	13.0	↑0.5
4/20 20:30	13.5	↑0.5
4/20 20:40	14.1	↑0.6
4/20 20:50	14.6	↑0.5
4/20 21:00	15.2	↑0.6
4/20 21:10	15.8	↑0.6
4/20 21:20	16.3	↑0.5
4/20 21:30	16.9	↑0.6
4/20 21:40	17.5	↑0.6
4/20 21:50	18.1	↑0.6
4/20 22:00	18.6	↑0.5
4/20 22:10	19.2	↑0.6
4/20 22:20	19.8	↑0.6
4/20 22:30	20.3	↑0.5
4/20 22:40	20.8	↑0.5
4/20 22:50	21.3	↑0.5
4/20 23:00	21.7	↑0.4
4/20 23:10	22.2	↑0.5
4/20 23:20	22.6	↑0.4
4/20 23:30	23.0	↑0.4
4/20 23:40	23.3	↑0.3
4/20 23:50	23.6	↑0.3