20 (金)	19:18	03:21	-	-
	31cm	-4cm	-	-
小潮 出 04:52 入 18:26 出 08:55 入 - 潮干狩り ◎ 04:52～11:49

江差／桧山（北海道）2029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	5.4	↓-1.0	最大潮位差
4/20 00:10	4.5	↓-0.9
4/20 00:20	3.6	↓-0.9
4/20 00:30	2.7	↓-0.9
4/20 00:40	1.9	↓-0.8
4/20 00:50	1.1	↓-0.8
4/20 01:00	0.3	↓-0.8
4/20 01:10	-0.4	↓-0.7
4/20 01:20	-1.0	↓-0.6
4/20 01:30	-1.6	↓-0.6
4/20 01:40	-2.1	↓-0.5
4/20 01:50	-2.6	↓-0.5
4/20 02:00	-3.0	↓-0.4
4/20 02:10	-3.4	↓-0.4
4/20 02:20	-3.7	↓-0.3
4/20 02:30	-4.0	↓-0.3
4/20 02:40	-4.2	↓-0.2
4/20 02:50	-4.4	↓-0.2
4/20 03:00	-4.5	↓-0.1
4/20 03:10	-4.6	↓-0.1
4/20 03:20	-4.6	0	干潮
4/20 03:30	-4.6	0
4/20 03:40	-4.5	↑0.1
4/20 03:50	-4.4	↑0.1
4/20 04:00	-4.3	↑0.1
4/20 04:10	-4.1	↑0.2
4/20 04:20	-3.9	↑0.2
4/20 04:30	-3.7	↑0.2
4/20 04:40	-3.4	↑0.3
4/20 04:50	-3.1	↑0.3
4/20 05:00	-2.8	↑0.3
4/20 05:10	-2.5	↑0.3
4/20 05:20	-2.1	↑0.4
4/20 05:30	-1.7	↑0.4
4/20 05:40	-1.4	↑0.3
4/20 05:50	-1.0	↑0.4
4/20 06:00	-0.6	↑0.4
4/20 06:10	-0.2	↑0.4
4/20 06:20	0.2	↑0.4
4/20 06:30	0.6	↑0.4
4/20 06:40	0.9	↑0.3
4/20 06:50	1.3	↑0.4
4/20 07:00	1.7	↑0.4
4/20 07:10	2.0	↑0.3
4/20 07:20	2.4	↑0.4
4/20 07:30	2.7	↑0.3
4/20 07:40	3.1	↑0.4
4/20 07:50	3.4	↑0.3
4/20 08:00	3.7	↑0.3
4/20 08:10	4.0	↑0.3
4/20 08:20	4.2	↑0.2
4/20 08:30	4.5	↑0.3
4/20 08:40	4.8	↑0.3
4/20 08:50	5.0	↑0.2
4/20 09:00	5.2	↑0.2
4/20 09:10	5.5	↑0.3
4/20 09:20	5.7	↑0.2
4/20 09:30	5.9	↑0.2
4/20 09:40	6.1	↑0.2
4/20 09:50	6.3	↑0.2
4/20 10:00	6.5	↑0.2
4/20 10:10	6.6	↑0.1
4/20 10:20	6.8	↑0.2
4/20 10:30	7.0	↑0.2
4/20 10:40	7.2	↑0.2
4/20 10:50	7.4	↑0.2
4/20 11:00	7.6	↑0.2
4/20 11:10	7.9	↑0.3
4/20 11:20	8.1	↑0.2
4/20 11:30	8.4	↑0.3
4/20 11:40	8.6	↑0.2
4/20 11:50	8.9	↑0.3
4/20 12:00	9.2	↑0.3
4/20 12:10	9.5	↑0.3
4/20 12:20	9.9	↑0.4
4/20 12:30	10.2	↑0.3
4/20 12:40	10.6	↑0.4
4/20 12:50	11.0	↑0.4
4/20 13:00	11.4	↑0.4
4/20 13:10	11.9	↑0.5
4/20 13:20	12.4	↑0.5
4/20 13:30	12.9	↑0.5
4/20 13:40	13.4	↑0.5
4/20 13:50	14.0	↑0.6
4/20 14:00	14.5	↑0.5
4/20 14:10	15.1	↑0.6
4/20 14:20	15.7	↑0.6
4/20 14:30	16.4	↑0.7
4/20 14:40	17.0	↑0.6
4/20 14:50	17.7	↑0.7
4/20 15:00	18.3	↑0.6
4/20 15:10	19.0	↑0.7
4/20 15:20	19.7	↑0.7
4/20 15:30	20.4	↑0.7
4/20 15:40	21.1	↑0.7
4/20 15:50	21.8	↑0.7
4/20 16:00	22.5	↑0.7
4/20 16:10	23.2	↑0.7
4/20 16:20	23.9	↑0.7
4/20 16:30	24.5	↑0.6
4/20 16:40	25.2	↑0.7
4/20 16:50	25.8	↑0.6
4/20 17:00	26.4	↑0.6
4/20 17:10	27.0	↑0.6
4/20 17:20	27.6	↑0.6
4/20 17:30	28.1	↑0.5
4/20 17:40	28.6	↑0.5
4/20 17:50	29.0	↑0.4
4/20 18:00	29.4	↑0.4
4/20 18:10	29.8	↑0.4
4/20 18:20	30.1	↑0.3
4/20 18:30	30.4	↑0.3
4/20 18:40	30.6	↑0.2
4/20 18:50	30.8	↑0.2
4/20 19:00	30.9	↑0.1
4/20 19:10	31.0	↑0.1	満潮
4/20 19:20	31.0	0
4/20 19:30	31.0	0
4/20 19:40	30.9	↓-0.1
4/20 19:50	30.7	↓-0.2
4/20 20:00	30.5	↓-0.2
4/20 20:10	30.2	↓-0.3
4/20 20:20	29.9	↓-0.3
4/20 20:30	29.5	↓-0.4
4/20 20:40	29.1	↓-0.4
4/20 20:50	28.6	↓-0.5
4/20 21:00	28.0	↓-0.6
4/20 21:10	27.5	↓-0.5
4/20 21:20	26.8	↓-0.7
4/20 21:30	26.1	↓-0.7
4/20 21:40	25.4	↓-0.7
4/20 21:50	24.6	↓-0.8
4/20 22:00	23.8	↓-0.8
4/20 22:10	23.0	↓-0.8
4/20 22:20	22.1	↓-0.9
4/20 22:30	21.2	↓-0.9
4/20 22:40	20.3	↓-0.9
4/20 22:50	19.4	↓-0.9
4/20 23:00	18.4	↓-1.0	最大潮位差
4/20 23:10	17.4	↓-1.0	最大潮位差
4/20 23:20	16.5	↓-0.9
4/20 23:30	15.5	↓-1.0	最大潮位差
4/20 23:40	14.5	↓-1.0	最大潮位差
4/20 23:50	13.5	↓-1.0	最大潮位差