20 (月)	01:41	06:46	13:11	19:54
	64cm	44cm	84cm	33cm
中潮 出 04:30 入 18:12 出 03:43 入 15:13

コイセボイ（北海道）2020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	57.8	↑1.1
4/20 00:10	58.8	↑1.0
4/20 00:20	59.7	↑0.9
4/20 00:30	60.5	↑0.8
4/20 00:40	61.2	↑0.7
4/20 00:50	61.8	↑0.6
4/20 01:00	62.3	↑0.5
4/20 01:10	62.7	↑0.4
4/20 01:20	63.0	↑0.3
4/20 01:30	63.1	↑0.1
4/20 01:40	63.2	↑0.1	満潮
4/20 01:50	63.1	↓-0.1
4/20 02:00	63.0	↓-0.1
4/20 02:10	62.7	↓-0.3
4/20 02:20	62.4	↓-0.3
4/20 02:30	61.9	↓-0.5
4/20 02:40	61.4	↓-0.5
4/20 02:50	60.8	↓-0.6
4/20 03:00	60.1	↓-0.7
4/20 03:10	59.3	↓-0.8
4/20 03:20	58.5	↓-0.8
4/20 03:30	57.6	↓-0.9
4/20 03:40	56.7	↓-0.9
4/20 03:50	55.7	↓-1.0
4/20 04:00	54.7	↓-1.0
4/20 04:10	53.7	↓-1.0
4/20 04:20	52.7	↓-1.0
4/20 04:30	51.7	↓-1.0
4/20 04:40	50.8	↓-0.9
4/20 04:50	49.8	↓-1.0
4/20 05:00	48.9	↓-0.9
4/20 05:10	48.0	↓-0.9
4/20 05:20	47.2	↓-0.8
4/20 05:30	46.4	↓-0.8
4/20 05:40	45.8	↓-0.6
4/20 05:50	45.1	↓-0.7
4/20 06:00	44.6	↓-0.5
4/20 06:10	44.2	↓-0.4
4/20 06:20	43.9	↓-0.3
4/20 06:30	43.6	↓-0.3
4/20 06:40	43.5	↓-0.1	干潮
4/20 06:50	43.5	0
4/20 07:00	43.6	↑0.1
4/20 07:10	43.9	↑0.3
4/20 07:20	44.2	↑0.3
4/20 07:30	44.7	↑0.5
4/20 07:40	45.2	↑0.5
4/20 07:50	45.9	↑0.7
4/20 08:00	46.7	↑0.8
4/20 08:10	47.6	↑0.9
4/20 08:20	48.7	↑1.1
4/20 08:30	49.8	↑1.1
4/20 08:40	51.0	↑1.2
4/20 08:50	52.3	↑1.3
4/20 09:00	53.6	↑1.3
4/20 09:10	55.1	↑1.5
4/20 09:20	56.6	↑1.5
4/20 09:30	58.1	↑1.5
4/20 09:40	59.7	↑1.6
4/20 09:50	61.4	↑1.7
4/20 10:00	63.0	↑1.6
4/20 10:10	64.6	↑1.6
4/20 10:20	66.3	↑1.7
4/20 10:30	67.9	↑1.6
4/20 10:40	69.5	↑1.6
4/20 10:50	71.1	↑1.6
4/20 11:00	72.6	↑1.5
4/20 11:10	74.1	↑1.5
4/20 11:20	75.5	↑1.4
4/20 11:30	76.8	↑1.3
4/20 11:40	78.0	↑1.2
4/20 11:50	79.2	↑1.2
4/20 12:00	80.2	↑1.0
4/20 12:10	81.1	↑0.9
4/20 12:20	81.9	↑0.8
4/20 12:30	82.5	↑0.6
4/20 12:40	83.0	↑0.5
4/20 12:50	83.4	↑0.4
4/20 13:00	83.6	↑0.2
4/20 13:10	83.7	↑0.1	満潮
4/20 13:20	83.6	↓-0.1
4/20 13:30	83.4	↓-0.2
4/20 13:40	83.1	↓-0.3
4/20 13:50	82.5	↓-0.6
4/20 14:00	81.9	↓-0.6
4/20 14:10	81.1	↓-0.8
4/20 14:20	80.1	↓-1.0
4/20 14:30	79.0	↓-1.1
4/20 14:40	77.8	↓-1.2
4/20 14:50	76.5	↓-1.3
4/20 15:00	75.0	↓-1.5
4/20 15:10	73.5	↓-1.5
4/20 15:20	71.8	↓-1.7
4/20 15:30	70.1	↓-1.7
4/20 15:40	68.2	↓-1.9
4/20 15:50	66.4	↓-1.8
4/20 16:00	64.4	↓-2.0
4/20 16:10	62.4	↓-2.0
4/20 16:20	60.4	↓-2.0
4/20 16:30	58.4	↓-2.0
4/20 16:40	56.4	↓-2.0
4/20 16:50	54.3	↓-2.1	最大潮位差
4/20 17:00	52.3	↓-2.0
4/20 17:10	50.4	↓-1.9
4/20 17:20	48.5	↓-1.9
4/20 17:30	46.6	↓-1.9
4/20 17:40	44.8	↓-1.8
4/20 17:50	43.1	↓-1.7
4/20 18:00	41.5	↓-1.6
4/20 18:10	40.0	↓-1.5
4/20 18:20	38.6	↓-1.4
4/20 18:30	37.3	↓-1.3
4/20 18:40	36.1	↓-1.2
4/20 18:50	35.1	↓-1.0
4/20 19:00	34.2	↓-0.9
4/20 19:10	33.5	↓-0.7
4/20 19:20	32.9	↓-0.6
4/20 19:30	32.4	↓-0.5
4/20 19:40	32.1	↓-0.3
4/20 19:50	32.0	↓-0.1	干潮
4/20 20:00	32.0	0
4/20 20:10	32.2	↑0.2
4/20 20:20	32.5	↑0.3
4/20 20:30	33.0	↑0.5
4/20 20:40	33.6	↑0.6
4/20 20:50	34.4	↑0.8
4/20 21:00	35.3	↑0.9
4/20 21:10	36.3	↑1.0
4/20 21:20	37.4	↑1.1
4/20 21:30	38.6	↑1.2
4/20 21:40	39.9	↑1.3
4/20 21:50	41.3	↑1.4
4/20 22:00	42.8	↑1.5
4/20 22:10	44.4	↑1.6
4/20 22:20	46.0	↑1.6
4/20 22:30	47.6	↑1.6
4/20 22:40	49.2	↑1.6
4/20 22:50	50.9	↑1.7
4/20 23:00	52.6	↑1.7
4/20 23:10	54.2	↑1.6
4/20 23:20	55.9	↑1.7
4/20 23:30	57.5	↑1.6
4/20 23:40	59.0	↑1.5
4/20 23:50	60.5	↑1.5