21 (土)	01:38	07:51	14:12	20:05
	75cm	30cm	79cm	39cm
大潮 出 04:29 入 18:13 出 16:49 入 03:59

コイセボイ（北海道）2035年04月21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
4/21 00:00	68.0	↑1.3
4/21 00:10	69.3	↑1.3
4/21 00:20	70.4	↑1.1
4/21 00:30	71.5	↑1.1
4/21 00:40	72.4	↑0.9
4/21 00:50	73.1	↑0.7
4/21 01:00	73.7	↑0.6
4/21 01:10	74.2	↑0.5
4/21 01:20	74.6	↑0.4
4/21 01:30	74.8	↑0.2	満潮
4/21 01:40	74.8	0
4/21 01:50	74.7	↓-0.1
4/21 02:00	74.4	↓-0.3
4/21 02:10	74.0	↓-0.4
4/21 02:20	73.4	↓-0.6
4/21 02:30	72.6	↓-0.8
4/21 02:40	71.8	↓-0.8
4/21 02:50	70.8	↓-1.0
4/21 03:00	69.6	↓-1.2
4/21 03:10	68.4	↓-1.2
4/21 03:20	67.0	↓-1.4
4/21 03:30	65.5	↓-1.5
4/21 03:40	63.9	↓-1.6
4/21 03:50	62.3	↓-1.6
4/21 04:00	60.6	↓-1.7
4/21 04:10	58.8	↓-1.8
4/21 04:20	56.9	↓-1.9
4/21 04:30	55.1	↓-1.8
4/21 04:40	53.2	↓-1.9
4/21 04:50	51.3	↓-1.9
4/21 05:00	49.4	↓-1.9
4/21 05:10	47.5	↓-1.9
4/21 05:20	45.6	↓-1.9
4/21 05:30	43.9	↓-1.7
4/21 05:40	42.1	↓-1.8
4/21 05:50	40.4	↓-1.7
4/21 06:00	38.9	↓-1.5
4/21 06:10	37.4	↓-1.5
4/21 06:20	36.0	↓-1.4
4/21 06:30	34.7	↓-1.3
4/21 06:40	33.6	↓-1.1
4/21 06:50	32.6	↓-1.0
4/21 07:00	31.7	↓-0.9
4/21 07:10	31.0	↓-0.7
4/21 07:20	30.4	↓-0.6
4/21 07:30	30.0	↓-0.4
4/21 07:40	29.8	↓-0.2
4/21 07:50	29.7	↓-0.1	干潮
4/21 08:00	29.8	↑0.1
4/21 08:10	30.1	↑0.3
4/21 08:20	30.5	↑0.4
4/21 08:30	31.1	↑0.6
4/21 08:40	31.8	↑0.7
4/21 08:50	32.7	↑0.9
4/21 09:00	33.7	↑1.0
4/21 09:10	34.9	↑1.2
4/21 09:20	36.2	↑1.3
4/21 09:30	37.7	↑1.5
4/21 09:40	39.2	↑1.5
4/21 09:50	40.9	↑1.7
4/21 10:00	42.6	↑1.7
4/21 10:10	44.4	↑1.8
4/21 10:20	46.3	↑1.9
4/21 10:30	48.3	↑2.0
4/21 10:40	50.3	↑2.0
4/21 10:50	52.3	↑2.0
4/21 11:00	54.3	↑2.0
4/21 11:10	56.3	↑2.0
4/21 11:20	58.4	↑2.1	最大潮位差
4/21 11:30	60.4	↑2.0
4/21 11:40	62.3	↑1.9
4/21 11:50	64.2	↑1.9
4/21 12:00	66.0	↑1.8
4/21 12:10	67.8	↑1.8
4/21 12:20	69.4	↑1.6
4/21 12:30	71.0	↑1.6
4/21 12:40	72.4	↑1.4
4/21 12:50	73.7	↑1.3
4/21 13:00	74.9	↑1.2
4/21 13:10	76.0	↑1.1
4/21 13:20	76.8	↑0.8
4/21 13:30	77.6	↑0.8
4/21 13:40	78.2	↑0.6
4/21 13:50	78.6	↑0.4
4/21 14:00	78.9	↑0.3
4/21 14:10	78.9	0	満潮
4/21 14:20	78.9	0
4/21 14:30	78.6	↓-0.3
4/21 14:40	78.3	↓-0.3
4/21 14:50	77.7	↓-0.6
4/21 15:00	77.0	↓-0.7
4/21 15:10	76.2	↓-0.8
4/21 15:20	75.2	↓-1.0
4/21 15:30	74.1	↓-1.1
4/21 15:40	72.8	↓-1.3
4/21 15:50	71.5	↓-1.3
4/21 16:00	70.0	↓-1.5
4/21 16:10	68.5	↓-1.5
4/21 16:20	66.9	↓-1.6
4/21 16:30	65.2	↓-1.7
4/21 16:40	63.4	↓-1.8
4/21 16:50	61.7	↓-1.7
4/21 17:00	59.9	↓-1.8
4/21 17:10	58.1	↓-1.8
4/21 17:20	56.2	↓-1.9
4/21 17:30	54.5	↓-1.7
4/21 17:40	52.7	↓-1.8
4/21 17:50	51.0	↓-1.7
4/21 18:00	49.3	↓-1.7
4/21 18:10	47.8	↓-1.5
4/21 18:20	46.3	↓-1.5
4/21 18:30	44.9	↓-1.4
4/21 18:40	43.6	↓-1.3
4/21 18:50	42.4	↓-1.2
4/21 19:00	41.3	↓-1.1
4/21 19:10	40.4	↓-0.9
4/21 19:20	39.7	↓-0.7
4/21 19:30	39.0	↓-0.7
4/21 19:40	38.6	↓-0.4
4/21 19:50	38.3	↓-0.3
4/21 20:00	38.1	↓-0.2	干潮
4/21 20:10	38.1	0
4/21 20:20	38.3	↑0.2
4/21 20:30	38.6	↑0.3
4/21 20:40	39.1	↑0.5
4/21 20:50	39.8	↑0.7
4/21 21:00	40.6	↑0.8
4/21 21:10	41.6	↑1.0
4/21 21:20	42.7	↑1.1
4/21 21:30	43.9	↑1.2
4/21 21:40	45.3	↑1.4
4/21 21:50	46.7	↑1.4
4/21 22:00	48.3	↑1.6
4/21 22:10	50.0	↑1.7
4/21 22:20	51.7	↑1.7
4/21 22:30	53.5	↑1.8
4/21 22:40	55.4	↑1.9
4/21 22:50	57.3	↑1.9
4/21 23:00	59.2	↑1.9
4/21 23:10	61.2	↑2.0
4/21 23:20	63.1	↑1.9
4/21 23:30	65.0	↑1.9
4/21 23:40	66.9	↑1.9
4/21 23:50	68.7	↑1.8