12 (日)	07:54	00:36	17:38	12:22
	15cm	-12cm	16cm	9cm
中潮 出 04:57 入 18:15 出 23:22 入 07:41

留萌（北海道）2020年04月12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
4/12 00:00	-11.8	↓-0.3
4/12 00:10	-12.0	↓-0.2
4/12 00:20	-12.1	↓-0.1
4/12 00:30	-12.2	↓-0.1	干潮
4/12 00:40	-12.2	0
4/12 00:50	-12.1	↑0.1
4/12 01:00	-12.0	↑0.1
4/12 01:10	-11.8	↑0.2
4/12 01:20	-11.5	↑0.3
4/12 01:30	-11.2	↑0.3
4/12 01:40	-10.9	↑0.3
4/12 01:50	-10.4	↑0.5
4/12 02:00	-9.9	↑0.5
4/12 02:10	-9.4	↑0.5
4/12 02:20	-8.8	↑0.6
4/12 02:30	-8.1	↑0.7
4/12 02:40	-7.4	↑0.7
4/12 02:50	-6.6	↑0.8
4/12 03:00	-5.8	↑0.8
4/12 03:10	-4.9	↑0.9
4/12 03:20	-4.0	↑0.9
4/12 03:30	-3.1	↑0.9
4/12 03:40	-2.1	↑1.0
4/12 03:50	-1.1	↑1.0
4/12 04:00	-0.1	↑1.0
4/12 04:10	0.9	↑1.0
4/12 04:20	2.0	↑1.1	最大潮位差
4/12 04:30	3.0	↑1.0
4/12 04:40	4.0	↑1.0
4/12 04:50	5.0	↑1.0
4/12 05:00	6.0	↑1.0
4/12 05:10	6.9	↑0.9
4/12 05:20	7.8	↑0.9
4/12 05:30	8.7	↑0.9
4/12 05:40	9.5	↑0.8
4/12 05:50	10.3	↑0.8
4/12 06:00	11.0	↑0.7
4/12 06:10	11.6	↑0.6
4/12 06:20	12.2	↑0.6
4/12 06:30	12.7	↑0.5
4/12 06:40	13.2	↑0.5
4/12 06:50	13.6	↑0.4
4/12 07:00	13.9	↑0.3
4/12 07:10	14.2	↑0.3
4/12 07:20	14.4	↑0.2
4/12 07:30	14.5	↑0.1
4/12 07:40	14.6	↑0.1
4/12 07:50	14.7	↑0.1	満潮
4/12 08:00	14.7	0
4/12 08:10	14.6	↓-0.1
4/12 08:20	14.5	↓-0.1
4/12 08:30	14.3	↓-0.2
4/12 08:40	14.2	↓-0.1
4/12 08:50	13.9	↓-0.3
4/12 09:00	13.7	↓-0.2
4/12 09:10	13.4	↓-0.3
4/12 09:20	13.1	↓-0.3
4/12 09:30	12.8	↓-0.3
4/12 09:40	12.5	↓-0.3
4/12 09:50	12.2	↓-0.3
4/12 10:00	11.8	↓-0.4
4/12 10:10	11.5	↓-0.3
4/12 10:20	11.2	↓-0.3
4/12 10:30	10.9	↓-0.3
4/12 10:40	10.6	↓-0.3
4/12 10:50	10.3	↓-0.3
4/12 11:00	10.0	↓-0.3
4/12 11:10	9.8	↓-0.2
4/12 11:20	9.6	↓-0.2
4/12 11:30	9.4	↓-0.2
4/12 11:40	9.3	↓-0.1
4/12 11:50	9.1	↓-0.2
4/12 12:00	9.1	0
4/12 12:10	9.0	↓-0.1
4/12 12:20	9.0	0	干潮
4/12 12:30	9.0	0
4/12 12:40	9.0	0
4/12 12:50	9.1	↑0.1
4/12 13:00	9.2	↑0.1
4/12 13:10	9.3	↑0.1
4/12 13:20	9.5	↑0.2
4/12 13:30	9.6	↑0.1
4/12 13:40	9.8	↑0.2
4/12 13:50	10.0	↑0.2
4/12 14:00	10.2	↑0.2
4/12 14:10	10.4	↑0.2
4/12 14:20	10.7	↑0.3
4/12 14:30	11.0	↑0.3
4/12 14:40	11.2	↑0.2
4/12 14:50	11.5	↑0.3
4/12 15:00	11.8	↑0.3
4/12 15:10	12.1	↑0.3
4/12 15:20	12.4	↑0.3
4/12 15:30	12.7	↑0.3
4/12 15:40	13.0	↑0.3
4/12 15:50	13.3	↑0.3
4/12 16:00	13.6	↑0.3
4/12 16:10	13.9	↑0.3
4/12 16:20	14.2	↑0.3
4/12 16:30	14.5	↑0.3
4/12 16:40	14.7	↑0.2
4/12 16:50	14.9	↑0.2
4/12 17:00	15.1	↑0.2
4/12 17:10	15.2	↑0.1
4/12 17:20	15.3	↑0.1
4/12 17:30	15.4	↑0.1	満潮
4/12 17:40	15.4	0
4/12 17:50	15.3	↓-0.1
4/12 18:00	15.2	↓-0.1
4/12 18:10	15.1	↓-0.1
4/12 18:20	14.9	↓-0.2
4/12 18:30	14.7	↓-0.2
4/12 18:40	14.4	↓-0.3
4/12 18:50	14.0	↓-0.4
4/12 19:00	13.6	↓-0.4
4/12 19:10	13.1	↓-0.5
4/12 19:20	12.6	↓-0.5
4/12 19:30	12.1	↓-0.5
4/12 19:40	11.5	↓-0.6
4/12 19:50	10.8	↓-0.7
4/12 20:00	10.1	↓-0.7
4/12 20:10	9.4	↓-0.7
4/12 20:20	8.7	↓-0.7
4/12 20:30	7.9	↓-0.8
4/12 20:40	7.1	↓-0.8
4/12 20:50	6.3	↓-0.8
4/12 21:00	5.5	↓-0.8
4/12 21:10	4.6	↓-0.9
4/12 21:20	3.7	↓-0.9
4/12 21:30	2.9	↓-0.8
4/12 21:40	2.0	↓-0.9
4/12 21:50	1.1	↓-0.9
4/12 22:00	0.3	↓-0.8
4/12 22:10	-0.6	↓-0.9
4/12 22:20	-1.4	↓-0.8
4/12 22:30	-2.3	↓-0.9
4/12 22:40	-3.1	↓-0.8
4/12 22:50	-3.8	↓-0.7
4/12 23:00	-4.6	↓-0.8
4/12 23:10	-5.3	↓-0.7
4/12 23:20	-5.9	↓-0.6
4/12 23:30	-6.6	↓-0.7
4/12 23:40	-7.1	↓-0.5
4/12 23:50	-7.7	↓-0.6