20 (金)	01:48	09:53	16:45	19:03
	119cm	9cm	58cm	55cm
大潮 出 03:38 入 19:08 出 03:52 入 19:08 潮干狩り ◎ 07:47～12:15

コイセボイ（北海道）2031年06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
6/20 00:00	107.3	↑1.9
6/20 00:10	109.0	↑1.7
6/20 00:20	110.7	↑1.7
6/20 00:30	112.2	↑1.5
6/20 00:40	113.5	↑1.3
6/20 00:50	114.7	↑1.2
6/20 01:00	115.8	↑1.1
6/20 01:10	116.6	↑0.8
6/20 01:20	117.3	↑0.7
6/20 01:30	117.7	↑0.4
6/20 01:40	118.0	↑0.3	満潮
6/20 01:50	118.0	0
6/20 02:00	117.9	↓-0.1
6/20 02:10	117.5	↓-0.4
6/20 02:20	116.9	↓-0.6
6/20 02:30	116.1	↓-0.8
6/20 02:40	115.0	↓-1.1
6/20 02:50	113.8	↓-1.2
6/20 03:00	112.3	↓-1.5
6/20 03:10	110.6	↓-1.7
6/20 03:20	108.7	↓-1.9
6/20 03:30	106.6	↓-2.1
6/20 03:40	104.3	↓-2.3
6/20 03:50	101.9	↓-2.4
6/20 04:00	99.2	↓-2.7
6/20 04:10	96.4	↓-2.8
6/20 04:20	93.5	↓-2.9
6/20 04:30	90.4	↓-3.1
6/20 04:40	87.2	↓-3.2
6/20 04:50	83.9	↓-3.3
6/20 05:00	80.5	↓-3.4
6/20 05:10	77.0	↓-3.5
6/20 05:20	73.4	↓-3.6
6/20 05:30	69.8	↓-3.6
6/20 05:40	66.2	↓-3.6
6/20 05:50	62.5	↓-3.7	最大潮位差
6/20 06:00	58.9	↓-3.6
6/20 06:10	55.3	↓-3.6
6/20 06:20	51.7	↓-3.6
6/20 06:30	48.1	↓-3.6
6/20 06:40	44.7	↓-3.4
6/20 06:50	41.3	↓-3.4
6/20 07:00	38.1	↓-3.2
6/20 07:10	34.9	↓-3.2
6/20 07:20	31.9	↓-3.0
6/20 07:30	29.0	↓-2.9
6/20 07:40	26.3	↓-2.7
6/20 07:50	23.7	↓-2.6
6/20 08:00	21.3	↓-2.4
6/20 08:10	19.1	↓-2.2
6/20 08:20	17.1	↓-2.0
6/20 08:30	15.3	↓-1.8
6/20 08:40	13.7	↓-1.6
6/20 08:50	12.3	↓-1.4
6/20 09:00	11.1	↓-1.2
6/20 09:10	10.1	↓-1.0
6/20 09:20	9.3	↓-0.8
6/20 09:30	8.8	↓-0.5
6/20 09:40	8.4	↓-0.4
6/20 09:50	8.3	↓-0.1	干潮
6/20 10:00	8.3	0
6/20 10:10	8.6	↑0.3
6/20 10:20	9.1	↑0.5
6/20 10:30	9.7	↑0.6
6/20 10:40	10.5	↑0.8
6/20 10:50	11.4	↑0.9
6/20 11:00	12.5	↑1.1
6/20 11:10	13.8	↑1.3
6/20 11:20	15.2	↑1.4
6/20 11:30	16.7	↑1.5
6/20 11:40	18.3	↑1.6
6/20 11:50	20.0	↑1.7
6/20 12:00	21.7	↑1.7
6/20 12:10	23.6	↑1.9
6/20 12:20	25.4	↑1.8
6/20 12:30	27.4	↑2.0
6/20 12:40	29.3	↑1.9
6/20 12:50	31.2	↑1.9
6/20 13:00	33.2	↑2.0
6/20 13:10	35.1	↑1.9
6/20 13:20	37.0	↑1.9
6/20 13:30	38.8	↑1.8
6/20 13:40	40.6	↑1.8
6/20 13:50	42.3	↑1.7
6/20 14:00	44.0	↑1.7
6/20 14:10	45.6	↑1.6
6/20 14:20	47.1	↑1.5
6/20 14:30	48.5	↑1.4
6/20 14:40	49.8	↑1.3
6/20 14:50	51.0	↑1.2
6/20 15:00	52.1	↑1.1
6/20 15:10	53.0	↑0.9
6/20 15:20	53.9	↑0.9
6/20 15:30	54.7	↑0.8
6/20 15:40	55.3	↑0.6
6/20 15:50	55.8	↑0.5
6/20 16:00	56.3	↑0.5
6/20 16:10	56.6	↑0.3
6/20 16:20	56.9	↑0.3
6/20 16:30	57.0	↑0.1
6/20 16:40	57.1	↑0.1	満潮
6/20 16:50	57.1	0
6/20 17:00	57.0	↓-0.1
6/20 17:10	56.9	↓-0.1
6/20 17:20	56.7	↓-0.2
6/20 17:30	56.5	↓-0.2
6/20 17:40	56.3	↓-0.2
6/20 17:50	56.0	↓-0.3
6/20 18:00	55.8	↓-0.2
6/20 18:10	55.5	↓-0.3
6/20 18:20	55.3	↓-0.2
6/20 18:30	55.1	↓-0.2
6/20 18:40	54.9	↓-0.2
6/20 18:50	54.8	↓-0.1
6/20 19:00	54.8	0	干潮
6/20 19:10	54.8	0
6/20 19:20	54.9	↑0.1
6/20 19:30	55.1	↑0.2
6/20 19:40	55.4	↑0.3
6/20 19:50	55.8	↑0.4
6/20 20:00	56.3	↑0.5
6/20 20:10	56.9	↑0.6
6/20 20:20	57.6	↑0.7
6/20 20:30	58.5	↑0.9
6/20 20:40	59.5	↑1.0
6/20 20:50	60.6	↑1.1
6/20 21:00	61.9	↑1.3
6/20 21:10	63.2	↑1.3
6/20 21:20	64.7	↑1.5
6/20 21:30	66.3	↑1.6
6/20 21:40	68.1	↑1.8
6/20 21:50	69.9	↑1.8
6/20 22:00	71.8	↑1.9
6/20 22:10	73.9	↑2.1
6/20 22:20	76.0	↑2.1
6/20 22:30	78.2	↑2.2
6/20 22:40	80.5	↑2.3
6/20 22:50	82.8	↑2.3
6/20 23:00	85.2	↑2.4
6/20 23:10	87.6	↑2.4
6/20 23:20	90.0	↑2.4
6/20 23:30	92.4	↑2.4
6/20 23:40	94.8	↑2.4
6/20 23:50	97.2	↑2.4