22 (月)	08:11	00:40	17:28	12:01
	18cm	-11cm	21cm	14cm
中潮 出 04:41 入 18:26 出 23:23 入 07:37

留萌（北海道）2030年04月22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
4/22 00:00	-10.8	↓-0.3
4/22 00:10	-11.0	↓-0.2
4/22 00:20	-11.2	↓-0.2
4/22 00:30	-11.2	0	干潮
4/22 00:40	-11.3	↓-0.1	干潮
4/22 00:50	-11.2	↑0.1
4/22 01:00	-11.1	↑0.1
4/22 01:10	-10.9	↑0.2
4/22 01:20	-10.7	↑0.2
4/22 01:30	-10.4	↑0.3
4/22 01:40	-10.0	↑0.4
4/22 01:50	-9.6	↑0.4
4/22 02:00	-9.1	↑0.5
4/22 02:10	-8.5	↑0.6
4/22 02:20	-7.9	↑0.6
4/22 02:30	-7.2	↑0.7
4/22 02:40	-6.5	↑0.7
4/22 02:50	-5.7	↑0.8
4/22 03:00	-4.8	↑0.9
4/22 03:10	-3.9	↑0.9
4/22 03:20	-3.0	↑0.9
4/22 03:30	-2.0	↑1.0
4/22 03:40	-1.0	↑1.0
4/22 03:50	0.0	↑1.0
4/22 04:00	1.1	0
4/22 04:10	2.1	↑1.0
4/22 04:20	3.2	↑1.1	最大潮位差
4/22 04:30	4.3	↑1.1	最大潮位差
4/22 04:40	5.4	↑1.1	最大潮位差
4/22 04:50	6.4	↑1.0
4/22 05:00	7.4	↑1.0
4/22 05:10	8.4	↑1.0
4/22 05:20	9.4	↑1.0
4/22 05:30	10.3	↑0.9
4/22 05:40	11.2	↑0.9
4/22 05:50	12.0	↑0.8
4/22 06:00	12.8	↑0.8
4/22 06:10	13.5	↑0.7
4/22 06:20	14.2	↑0.7
4/22 06:30	14.7	↑0.5
4/22 06:40	15.3	↑0.6
4/22 06:50	15.7	↑0.4
4/22 07:00	16.1	↑0.4
4/22 07:10	16.5	↑0.4
4/22 07:20	16.8	↑0.3
4/22 07:30	17.0	↑0.2
4/22 07:40	17.2	↑0.2
4/22 07:50	17.3	↑0.1
4/22 08:00	17.4	↑0.1
4/22 08:10	17.4	0	満潮
4/22 08:20	17.4	0
4/22 08:30	17.3	↓-0.1
4/22 08:40	17.2	↓-0.1
4/22 08:50	17.1	↓-0.1
4/22 09:00	16.9	↓-0.2
4/22 09:10	16.7	↓-0.2
4/22 09:20	16.5	↓-0.2
4/22 09:30	16.3	↓-0.2
4/22 09:40	16.1	↓-0.2
4/22 09:50	15.8	↓-0.3
4/22 10:00	15.6	↓-0.2
4/22 10:10	15.3	↓-0.3
4/22 10:20	15.1	↓-0.2
4/22 10:30	14.9	↓-0.2
4/22 10:40	14.7	↓-0.2
4/22 10:50	14.5	↓-0.2
4/22 11:00	14.3	↓-0.2
4/22 11:10	14.1	↓-0.2
4/22 11:20	14.0	↓-0.1
4/22 11:30	13.9	↓-0.1
4/22 11:40	13.8	↓-0.1
4/22 11:50	13.8	0
4/22 12:00	13.8	0	干潮
4/22 12:10	13.8	0
4/22 12:20	13.8	0
4/22 12:30	13.9	↑0.1
4/22 12:40	14.0	↑0.1
4/22 12:50	14.1	↑0.1
4/22 13:00	14.2	↑0.1
4/22 13:10	14.4	↑0.2
4/22 13:20	14.6	↑0.2
4/22 13:30	14.8	↑0.2
4/22 13:40	15.0	↑0.2
4/22 13:50	15.2	↑0.2
4/22 14:00	15.4	↑0.2
4/22 14:10	15.7	↑0.3
4/22 14:20	15.9	↑0.2
4/22 14:30	16.2	↑0.3
4/22 14:40	16.4	↑0.2
4/22 14:50	16.7	↑0.3
4/22 15:00	17.0	↑0.3
4/22 15:10	17.3	↑0.3
4/22 15:20	17.5	↑0.2
4/22 15:30	17.8	↑0.3
4/22 15:40	18.1	↑0.3
4/22 15:50	18.4	↑0.3
4/22 16:00	18.7	↑0.3
4/22 16:10	18.9	↑0.2
4/22 16:20	19.1	↑0.2
4/22 16:30	19.4	↑0.3
4/22 16:40	19.6	↑0.2
4/22 16:50	19.7	↑0.1
4/22 17:00	19.8	↑0.1
4/22 17:10	19.9	↑0.1
4/22 17:20	20.0	↑0.1	満潮
4/22 17:30	20.0	0
4/22 17:40	20.0	0
4/22 17:50	19.9	↓-0.1
4/22 18:00	19.7	↓-0.2
4/22 18:10	19.5	↓-0.2
4/22 18:20	19.3	↓-0.2
4/22 18:30	19.0	↓-0.3
4/22 18:40	18.6	↓-0.4
4/22 18:50	18.2	↓-0.4
4/22 19:00	17.8	↓-0.4
4/22 19:10	17.2	↓-0.6
4/22 19:20	16.7	↓-0.5
4/22 19:30	16.1	↓-0.6
4/22 19:40	15.4	↓-0.7
4/22 19:50	14.7	↓-0.7
4/22 20:00	14.0	↓-0.7
4/22 20:10	13.2	↓-0.8
4/22 20:20	12.4	↓-0.8
4/22 20:30	11.6	↓-0.8
4/22 20:40	10.7	↓-0.9
4/22 20:50	9.8	↓-0.9
4/22 21:00	8.9	↓-0.9
4/22 21:10	8.0	↓-0.9
4/22 21:20	7.1	↓-0.9
4/22 21:30	6.1	↓-1.0
4/22 21:40	5.2	↓-0.9
4/22 21:50	4.2	↓-1.0
4/22 22:00	3.3	↓-0.9
4/22 22:10	2.4	↓-0.9
4/22 22:20	1.4	↓-1.0
4/22 22:30	0.5	↓-0.9
4/22 22:40	-0.3	↓-0.8
4/22 22:50	-1.2	↓-0.9
4/22 23:00	-2.0	↓-0.8
4/22 23:10	-2.8	↓-0.8
4/22 23:20	-3.5	↓-0.7
4/22 23:30	-4.2	↓-0.7
4/22 23:40	-4.9	↓-0.7
4/22 23:50	-5.5	↓-0.6