20 (水)	01:20	07:59	14:25	19:47
	80cm	24cm	75cm	44cm
大潮 出 04:30 入 18:12 出 03:29 入 16:53

コイセボイ（北海道）2050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	74.9	↑1.2
4/20 00:10	75.9	↑1.0
4/20 00:20	76.9	↑1.0
4/20 00:30	77.7	↑0.8
4/20 00:40	78.3	↑0.6
4/20 00:50	78.9	↑0.6
4/20 01:00	79.2	↑0.3
4/20 01:10	79.4	↑0.2	満潮
4/20 01:20	79.5	↑0.1	満潮
4/20 01:30	79.4	↓-0.1
4/20 01:40	79.1	↓-0.3
4/20 01:50	78.7	↓-0.4
4/20 02:00	78.1	↓-0.6
4/20 02:10	77.4	↓-0.7
4/20 02:20	76.5	↓-0.9
4/20 02:30	75.4	↓-1.1
4/20 02:40	74.2	↓-1.2
4/20 02:50	72.9	↓-1.3
4/20 03:00	71.4	↓-1.5
4/20 03:10	69.8	↓-1.6
4/20 03:20	68.1	↓-1.7
4/20 03:30	66.3	↓-1.8
4/20 03:40	64.4	↓-1.9
4/20 03:50	62.4	↓-2.0
4/20 04:00	60.3	↓-2.1
4/20 04:10	58.2	↓-2.1
4/20 04:20	56.1	↓-2.1
4/20 04:30	53.9	↓-2.2	最大潮位差
4/20 04:40	51.7	↓-2.2	最大潮位差
4/20 04:50	49.5	↓-2.2	最大潮位差
4/20 05:00	47.3	↓-2.2	最大潮位差
4/20 05:10	45.1	↓-2.2	最大潮位差
4/20 05:20	43.0	↓-2.1
4/20 05:30	40.9	↓-2.1
4/20 05:40	38.9	↓-2.0
4/20 05:50	37.0	↓-1.9
4/20 06:00	35.1	↓-1.9
4/20 06:10	33.4	↓-1.7
4/20 06:20	31.8	↓-1.6
4/20 06:30	30.3	↓-1.5
4/20 06:40	28.9	↓-1.4
4/20 06:50	27.7	↓-1.2
4/20 07:00	26.7	↓-1.0
4/20 07:10	25.8	↓-0.9
4/20 07:20	25.0	↓-0.8
4/20 07:30	24.5	↓-0.5
4/20 07:40	24.1	↓-0.4
4/20 07:50	23.9	↓-0.2	干潮
4/20 08:00	23.8	↓-0.1
4/20 08:10	23.9	↑0.1
4/20 08:20	24.2	↑0.3
4/20 08:30	24.7	↑0.5
4/20 08:40	25.4	↑0.7
4/20 08:50	26.2	↑0.8
4/20 09:00	27.1	↑0.9
4/20 09:10	28.2	↑1.1
4/20 09:20	29.5	↑1.3
4/20 09:30	30.9	↑1.4
4/20 09:40	32.4	↑1.5
4/20 09:50	34.0	↑1.6
4/20 10:00	35.7	↑1.7
4/20 10:10	37.5	↑1.8
4/20 10:20	39.4	↑1.9
4/20 10:30	41.4	↑2.0
4/20 10:40	43.4	↑2.0
4/20 10:50	45.4	↑2.0
4/20 11:00	47.5	↑2.1
4/20 11:10	49.5	↑2.0
4/20 11:20	51.6	↑2.1
4/20 11:30	53.6	↑2.0
4/20 11:40	55.7	↑2.1
4/20 11:50	57.6	↑1.9
4/20 12:00	59.5	↑1.9
4/20 12:10	61.4	↑1.9
4/20 12:20	63.1	↑1.7
4/20 12:30	64.8	↑1.7
4/20 12:40	66.3	↑1.5
4/20 12:50	67.7	↑1.4
4/20 13:00	69.0	↑1.3
4/20 13:10	70.2	↑1.2
4/20 13:20	71.3	↑1.1
4/20 13:30	72.2	↑0.9
4/20 13:40	72.9	↑0.7
4/20 13:50	73.5	↑0.6
4/20 14:00	74.0	↑0.5
4/20 14:10	74.2	↑0.2
4/20 14:20	74.4	↑0.2	満潮
4/20 14:30	74.4	0
4/20 14:40	74.2	↓-0.2
4/20 14:50	73.9	↓-0.3
4/20 15:00	73.4	↓-0.5
4/20 15:10	72.8	↓-0.6
4/20 15:20	72.1	↓-0.7
4/20 15:30	71.2	↓-0.9
4/20 15:40	70.3	↓-0.9
4/20 15:50	69.2	↓-1.1
4/20 16:00	68.1	↓-1.1
4/20 16:10	66.8	↓-1.3
4/20 16:20	65.5	↓-1.3
4/20 16:30	64.1	↓-1.4
4/20 16:40	62.7	↓-1.4
4/20 16:50	61.3	↓-1.4
4/20 17:00	59.8	↓-1.5
4/20 17:10	58.3	↓-1.5
4/20 17:20	56.8	↓-1.5
4/20 17:30	55.4	↓-1.4
4/20 17:40	54.0	↓-1.4
4/20 17:50	52.6	↓-1.4
4/20 18:00	51.3	↓-1.3
4/20 18:10	50.1	↓-1.2
4/20 18:20	48.9	↓-1.2
4/20 18:30	47.9	↓-1.0
4/20 18:40	46.9	↓-1.0
4/20 18:50	46.1	↓-0.8
4/20 19:00	45.3	↓-0.8
4/20 19:10	44.8	↓-0.5
4/20 19:20	44.3	↓-0.5
4/20 19:30	44.0	↓-0.3
4/20 19:40	43.8	↓-0.2	干潮
4/20 19:50	43.8	0
4/20 20:00	44.0	↑0.2
4/20 20:10	44.2	↑0.2
4/20 20:20	44.7	↑0.5
4/20 20:30	45.3	↑0.6
4/20 20:40	46.0	↑0.7
4/20 20:50	46.9	↑0.9
4/20 21:00	47.9	↑1.0
4/20 21:10	49.1	↑1.2
4/20 21:20	50.4	↑1.3
4/20 21:30	51.8	↑1.4
4/20 21:40	53.3	↑1.5
4/20 21:50	54.9	↑1.6
4/20 22:00	56.6	↑1.7
4/20 22:10	58.3	↑1.7
4/20 22:20	60.1	↑1.8
4/20 22:30	62.0	↑1.9
4/20 22:40	63.9	↑1.9
4/20 22:50	65.8	↑1.9
4/20 23:00	67.8	↑2.0
4/20 23:10	69.7	↑1.9
4/20 23:20	71.6	↑1.9
4/20 23:30	73.4	↑1.8
4/20 23:40	75.2	↑1.8
4/20 23:50	77.0	↑1.8