21 (火)	01:25	09:31	16:45	18:27
	116cm	8cm	59cm	58cm
大潮 出 03:38 入 19:09 出 03:04 入 18:48 潮干狩り ◎ 07:22～11:57

コイセボイ（北海道）2039年06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
6/21 00:00	108.7	↑1.5
6/21 00:10	110.1	↑1.4
6/21 00:20	111.4	↑1.3
6/21 00:30	112.4	↑1.0
6/21 00:40	113.4	↑1.0
6/21 00:50	114.1	↑0.7
6/21 01:00	114.7	↑0.6
6/21 01:10	115.1	↑0.4
6/21 01:20	115.3	↑0.2	満潮
6/21 01:30	115.3	0
6/21 01:40	115.0	↓-0.3
6/21 01:50	114.6	↓-0.4
6/21 02:00	114.0	↓-0.6
6/21 02:10	113.1	↓-0.9
6/21 02:20	112.1	↓-1.0
6/21 02:30	110.8	↓-1.3
6/21 02:40	109.3	↓-1.5
6/21 02:50	107.6	↓-1.7
6/21 03:00	105.7	↓-1.9
6/21 03:10	103.6	↓-2.1
6/21 03:20	101.3	↓-2.3
6/21 03:30	98.9	↓-2.4
6/21 03:40	96.3	↓-2.6
6/21 03:50	93.5	↓-2.8
6/21 04:00	90.6	↓-2.9
6/21 04:10	87.6	↓-3.0
6/21 04:20	84.4	↓-3.2
6/21 04:30	81.1	↓-3.3
6/21 04:40	77.8	↓-3.3
6/21 04:50	74.3	↓-3.5
6/21 05:00	70.8	↓-3.5
6/21 05:10	67.3	↓-3.5
6/21 05:20	63.7	↓-3.6	最大潮位差
6/21 05:30	60.2	↓-3.5
6/21 05:40	56.6	↓-3.6	最大潮位差
6/21 05:50	53.0	↓-3.6	最大潮位差
6/21 06:00	49.5	↓-3.5
6/21 06:10	46.1	↓-3.4
6/21 06:20	42.7	↓-3.4
6/21 06:30	39.4	↓-3.3
6/21 06:40	36.2	↓-3.2
6/21 06:50	33.1	↓-3.1
6/21 07:00	30.2	↓-2.9
6/21 07:10	27.4	↓-2.8
6/21 07:20	24.7	↓-2.7
6/21 07:30	22.2	↓-2.5
6/21 07:40	19.9	↓-2.3
6/21 07:50	17.8	↓-2.1
6/21 08:00	15.8	↓-2.0
6/21 08:10	14.1	↓-1.7
6/21 08:20	12.5	↓-1.6
6/21 08:30	11.2	↓-1.3
6/21 08:40	10.1	↓-1.1
6/21 08:50	9.1	↓-1.0
6/21 09:00	8.4	↓-0.7
6/21 09:10	7.9	↓-0.5
6/21 09:20	7.6	↓-0.3
6/21 09:30	7.5	↓-0.1	干潮
6/21 09:40	7.6	↑0.1
6/21 09:50	7.9	↑0.3
6/21 10:00	8.4	↑0.5
6/21 10:10	9.1	↑0.7
6/21 10:20	9.9	↑0.8
6/21 10:30	10.9	↑1.0
6/21 10:40	12.0	↑1.1
6/21 10:50	13.3	↑1.3
6/21 11:00	14.7	↑1.4
6/21 11:10	16.2	↑1.5
6/21 11:20	17.9	↑1.7
6/21 11:30	19.6	↑1.7
6/21 11:40	21.4	↑1.8
6/21 11:50	23.2	↑1.8
6/21 12:00	25.2	↑2.0
6/21 12:10	27.1	↑1.9
6/21 12:20	29.1	↑2.0
6/21 12:30	31.0	↑1.9
6/21 12:40	33.0	↑2.0
6/21 12:50	35.0	↑2.0
6/21 13:00	36.9	↑1.9
6/21 13:10	38.8	↑1.9
6/21 13:20	40.7	↑1.9
6/21 13:30	42.5	↑1.8
6/21 13:40	44.2	↑1.7
6/21 13:50	45.8	↑1.6
6/21 14:00	47.4	↑1.6
6/21 14:10	48.9	↑1.5
6/21 14:20	50.2	↑1.3
6/21 14:30	51.5	↑1.3
6/21 14:40	52.7	↑1.2
6/21 14:50	53.8	↑1.1
6/21 15:00	54.7	↑0.9
6/21 15:10	55.6	↑0.9
6/21 15:20	56.3	↑0.7
6/21 15:30	57.0	↑0.7
6/21 15:40	57.5	↑0.5
6/21 15:50	57.9	↑0.4
6/21 16:00	58.3	↑0.4
6/21 16:10	58.6	↑0.3
6/21 16:20	58.8	↑0.2
6/21 16:30	58.9	↑0.1
6/21 16:40	58.9	0	満潮
6/21 16:50	58.9	0
6/21 17:00	58.9	0
6/21 17:10	58.8	↓-0.1
6/21 17:20	58.7	↓-0.1
6/21 17:30	58.5	↓-0.2
6/21 17:40	58.4	↓-0.1
6/21 17:50	58.3	↓-0.1
6/21 18:00	58.2	↓-0.1
6/21 18:10	58.1	↓-0.1
6/21 18:20	58.0	↓-0.1	干潮
6/21 18:30	58.0	0
6/21 18:40	58.1	↑0.1
6/21 18:50	58.2	↑0.1
6/21 19:00	58.4	↑0.2
6/21 19:10	58.6	↑0.2
6/21 19:20	59.0	↑0.4
6/21 19:30	59.5	↑0.5
6/21 19:40	60.0	↑0.5
6/21 19:50	60.7	↑0.7
6/21 20:00	61.5	↑0.8
6/21 20:10	62.4	↑0.9
6/21 20:20	63.4	↑1.0
6/21 20:30	64.6	↑1.2
6/21 20:40	65.8	↑1.2
6/21 20:50	67.2	↑1.4
6/21 21:00	68.7	↑1.5
6/21 21:10	70.3	↑1.6
6/21 21:20	72.0	↑1.7
6/21 21:30	73.8	↑1.8
6/21 21:40	75.7	↑1.9
6/21 21:50	77.7	↑2.0
6/21 22:00	79.8	↑2.1
6/21 22:10	81.9	↑2.1
6/21 22:20	84.1	↑2.2
6/21 22:30	86.4	↑2.3
6/21 22:40	88.6	↑2.2
6/21 22:50	90.9	↑2.3
6/21 23:00	93.3	↑2.4
6/21 23:10	95.6	↑2.3
6/21 23:20	97.9	↑2.3
6/21 23:30	100.1	↑2.2
6/21 23:40	102.3	↑2.2
6/21 23:50	104.5	↑2.2