20 (月)	02:44	10:28	17:26	22:13
	20cm	-11cm	17cm	9cm
大潮 出 06:26 入 17:11 出 06:46 入 16:55 潮干狩り ◎ 06:32～14:21

留萌（北海道）2023年02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
2/20 00:00	15.4	↑0.3
2/20 00:10	15.8	↑0.4
2/20 00:20	16.1	↑0.3
2/20 00:30	16.5	↑0.4
2/20 00:40	16.8	↑0.3
2/20 00:50	17.2	↑0.4
2/20 01:00	17.5	↑0.3
2/20 01:10	17.9	↑0.4
2/20 01:20	18.3	↑0.4
2/20 01:30	18.6	↑0.3
2/20 01:40	18.9	↑0.3
2/20 01:50	19.2	↑0.3
2/20 02:00	19.4	↑0.2
2/20 02:10	19.6	↑0.2
2/20 02:20	19.8	↑0.2
2/20 02:30	19.9	↑0.1
2/20 02:40	19.9	0	満潮
2/20 02:50	19.9	0
2/20 03:00	19.8	↓-0.1
2/20 03:10	19.7	↓-0.1
2/20 03:20	19.5	↓-0.2
2/20 03:30	19.3	↓-0.2
2/20 03:40	18.9	↓-0.4
2/20 03:50	18.6	↓-0.3
2/20 04:00	18.1	↓-0.5
2/20 04:10	17.6	↓-0.5
2/20 04:20	17.1	↓-0.5
2/20 04:30	16.5	↓-0.6
2/20 04:40	15.8	↓-0.7
2/20 04:50	15.1	↓-0.7
2/20 05:00	14.4	↓-0.7
2/20 05:10	13.6	↓-0.8
2/20 05:20	12.7	↓-0.9
2/20 05:30	11.9	↓-0.8
2/20 05:40	10.9	↓-1.0
2/20 05:50	10.0	↓-0.9
2/20 06:00	9.0	↓-1.0
2/20 06:10	8.0	↓-1.0
2/20 06:20	7.0	↓-1.0
2/20 06:30	5.9	↓-1.1
2/20 06:40	4.8	↓-1.1
2/20 06:50	3.7	↓-1.1
2/20 07:00	2.6	↓-1.1
2/20 07:10	1.6	↓-1.0
2/20 07:20	0.5	↓-1.1
2/20 07:30	-0.6	↓-1.1
2/20 07:40	-1.7	↓-1.1
2/20 07:50	-2.7	↓-1.0
2/20 08:00	-3.7	↓-1.0
2/20 08:10	-4.7	↓-1.0
2/20 08:20	-5.6	↓-0.9
2/20 08:30	-6.5	↓-0.9
2/20 08:40	-7.3	↓-0.8
2/20 08:50	-8.1	↓-0.8
2/20 09:00	-8.8	↓-0.7
2/20 09:10	-9.4	↓-0.6
2/20 09:20	-10.0	↓-0.6
2/20 09:30	-10.5	↓-0.5
2/20 09:40	-10.9	↓-0.4
2/20 09:50	-11.2	↓-0.3
2/20 10:00	-11.4	↓-0.2
2/20 10:10	-11.6	↓-0.2
2/20 10:20	-11.7	↓-0.1	干潮
2/20 10:30	-11.7	0
2/20 10:40	-11.7	0
2/20 10:50	-11.5	↑0.2
2/20 11:00	-11.3	↑0.2
2/20 11:10	-11.0	↑0.3
2/20 11:20	-10.7	↑0.3
2/20 11:30	-10.2	↑0.5
2/20 11:40	-9.7	↑0.5
2/20 11:50	-9.1	↑0.6
2/20 12:00	-8.5	↑0.6
2/20 12:10	-7.7	↑0.8
2/20 12:20	-6.9	↑0.8
2/20 12:30	-6.1	↑0.8
2/20 12:40	-5.1	↑1.0
2/20 12:50	-4.2	↑0.9
2/20 13:00	-3.2	↑1.0
2/20 13:10	-2.1	↑1.1
2/20 13:20	-1.0	↑1.1
2/20 13:30	0.1	↑1.1
2/20 13:40	1.2	↑1.1
2/20 13:50	2.4	↑1.2	最大潮位差
2/20 14:00	3.5	↑1.1
2/20 14:10	4.6	↑1.1
2/20 14:20	5.7	↑1.1
2/20 14:30	6.8	↑1.1
2/20 14:40	7.9	↑1.1
2/20 14:50	8.9	↑1.0
2/20 15:00	9.8	↑0.9
2/20 15:10	10.7	↑0.9
2/20 15:20	11.5	↑0.8
2/20 15:30	12.3	↑0.8
2/20 15:40	13.0	↑0.7
2/20 15:50	13.6	↑0.6
2/20 16:00	14.2	↑0.6
2/20 16:10	14.7	↑0.5
2/20 16:20	15.2	↑0.5
2/20 16:30	15.5	↑0.3
2/20 16:40	15.8	↑0.3
2/20 16:50	16.1	↑0.3
2/20 17:00	16.2	↑0.1
2/20 17:10	16.4	↑0.2
2/20 17:20	16.4	0	満潮
2/20 17:30	16.4	0
2/20 17:40	16.4	0
2/20 17:50	16.3	↓-0.1
2/20 18:00	16.1	↓-0.2
2/20 18:10	15.9	↓-0.2
2/20 18:20	15.7	↓-0.2
2/20 18:30	15.4	↓-0.3
2/20 18:40	15.1	↓-0.3
2/20 18:50	14.7	↓-0.4
2/20 19:00	14.3	↓-0.4
2/20 19:10	13.9	↓-0.4
2/20 19:20	13.5	↓-0.4
2/20 19:30	13.1	↓-0.4
2/20 19:40	12.7	↓-0.4
2/20 19:50	12.2	↓-0.5
2/20 20:00	11.8	↓-0.4
2/20 20:10	11.4	↓-0.4
2/20 20:20	10.9	↓-0.5
2/20 20:30	10.5	↓-0.4
2/20 20:40	10.2	↓-0.3
2/20 20:50	9.8	↓-0.4
2/20 21:00	9.5	↓-0.3
2/20 21:10	9.3	↓-0.2
2/20 21:20	9.0	↓-0.3
2/20 21:30	8.8	↓-0.2
2/20 21:40	8.7	↓-0.1
2/20 21:50	8.6	↓-0.1
2/20 22:00	8.5	↓-0.1
2/20 22:10	8.5	0	干潮
2/20 22:20	8.5	0
2/20 22:30	8.6	↑0.1
2/20 22:40	8.6	0
2/20 22:50	8.8	↑0.2
2/20 23:00	8.9	↑0.1
2/20 23:10	9.1	↑0.2
2/20 23:20	9.4	↑0.3
2/20 23:30	9.6	↑0.2
2/20 23:40	9.9	↑0.3
2/20 23:50	10.3	↑0.4