12 (月)	02:34	08:49	15:20	21:07
	78cm	23cm	86cm	40cm
大潮 出 04:44 入 18:02 出 05:05 入 18:03 潮干狩り ○ 08:01～09:37

コイセボイ（北海道）2021年04月12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
4/12 00:00	60.1	↑2.0
4/12 00:10	61.9	↑1.8
4/12 00:20	63.8	↑1.9
4/12 00:30	65.6	↑1.8
4/12 00:40	67.3	↑1.7
4/12 00:50	68.9	↑1.6
4/12 01:00	70.4	↑1.5
4/12 01:10	71.8	↑1.4
4/12 01:20	73.1	↑1.3
4/12 01:30	74.2	↑1.1
4/12 01:40	75.2	↑1.0
4/12 01:50	76.1	↑0.9
4/12 02:00	76.7	↑0.6
4/12 02:10	77.2	↑0.5
4/12 02:20	77.6	↑0.4
4/12 02:30	77.7	↑0.1	満潮
4/12 02:40	77.7	0
4/12 02:50	77.5	↓-0.2
4/12 03:00	77.1	↓-0.4
4/12 03:10	76.5	↓-0.6
4/12 03:20	75.7	↓-0.8
4/12 03:30	74.8	↓-0.9
4/12 03:40	73.7	↓-1.1
4/12 03:50	72.4	↓-1.3
4/12 04:00	70.9	↓-1.5
4/12 04:10	69.4	↓-1.5
4/12 04:20	67.7	↓-1.7
4/12 04:30	65.8	↓-1.9
4/12 04:40	63.9	↓-1.9
4/12 04:50	61.8	↓-2.1
4/12 05:00	59.7	↓-2.1
4/12 05:10	57.5	↓-2.2
4/12 05:20	55.2	↓-2.3
4/12 05:30	52.9	↓-2.3
4/12 05:40	50.6	↓-2.3
4/12 05:50	48.3	↓-2.3
4/12 06:00	46.0	↓-2.3
4/12 06:10	43.7	↓-2.3
4/12 06:20	41.4	↓-2.3
4/12 06:30	39.2	↓-2.2
4/12 06:40	37.1	↓-2.1
4/12 06:50	35.1	↓-2.0
4/12 07:00	33.2	↓-1.9
4/12 07:10	31.4	↓-1.8
4/12 07:20	29.7	↓-1.7
4/12 07:30	28.1	↓-1.6
4/12 07:40	26.8	↓-1.3
4/12 07:50	25.6	↓-1.2
4/12 08:00	24.5	↓-1.1
4/12 08:10	23.7	↓-0.8
4/12 08:20	23.0	↓-0.7
4/12 08:30	22.5	↓-0.5
4/12 08:40	22.2	↓-0.3	干潮
4/12 08:50	22.2	0
4/12 09:00	22.3	↑0.1
4/12 09:10	22.6	↑0.3
4/12 09:20	23.2	↑0.6
4/12 09:30	23.9	↑0.7
4/12 09:40	24.8	↑0.9
4/12 09:50	26.0	↑1.2
4/12 10:00	27.3	↑1.3
4/12 10:10	28.7	↑1.4
4/12 10:20	30.4	↑1.7
4/12 10:30	32.1	↑1.7
4/12 10:40	34.1	↑2.0
4/12 10:50	36.1	↑2.0
4/12 11:00	38.3	↑2.2
4/12 11:10	40.6	↑2.3
4/12 11:20	42.9	↑2.3
4/12 11:30	45.4	↑2.5
4/12 11:40	47.8	↑2.4
4/12 11:50	50.4	↑2.6	最大潮位差
4/12 12:00	52.9	↑2.5
4/12 12:10	55.4	↑2.5
4/12 12:20	58.0	↑2.6	最大潮位差
4/12 12:30	60.5	↑2.5
4/12 12:40	62.9	↑2.4
4/12 12:50	65.3	↑2.4
4/12 13:00	67.6	↑2.3
4/12 13:10	69.8	↑2.2
4/12 13:20	72.0	↑2.2
4/12 13:30	73.9	↑1.9
4/12 13:40	75.8	↑1.9
4/12 13:50	77.5	↑1.7
4/12 14:00	79.1	↑1.6
4/12 14:10	80.4	↑1.3
4/12 14:20	81.7	↑1.3
4/12 14:30	82.7	↑1.0
4/12 14:40	83.5	↑0.8
4/12 14:50	84.2	↑0.7
4/12 15:00	84.7	↑0.5
4/12 15:10	84.9	↑0.2	満潮
4/12 15:20	85.0	↑0.1	満潮
4/12 15:30	84.9	↓-0.1
4/12 15:40	84.6	↓-0.3
4/12 15:50	84.1	↓-0.5
4/12 16:00	83.4	↓-0.7
4/12 16:10	82.5	↓-0.9
4/12 16:20	81.5	↓-1.0
4/12 16:30	80.3	↓-1.2
4/12 16:40	79.0	↓-1.3
4/12 16:50	77.6	↓-1.4
4/12 17:00	76.0	↓-1.6
4/12 17:10	74.3	↓-1.7
4/12 17:20	72.5	↓-1.8
4/12 17:30	70.6	↓-1.9
4/12 17:40	68.7	↓-1.9
4/12 17:50	66.7	↓-2.0
4/12 18:00	64.7	↓-2.0
4/12 18:10	62.7	↓-2.0
4/12 18:20	60.6	↓-2.1
4/12 18:30	58.6	↓-2.0
4/12 18:40	56.6	↓-2.0
4/12 18:50	54.7	↓-1.9
4/12 19:00	52.8	↓-1.9
4/12 19:10	51.0	↓-1.8
4/12 19:20	49.3	↓-1.7
4/12 19:30	47.7	↓-1.6
4/12 19:40	46.2	↓-1.5
4/12 19:50	44.9	↓-1.3
4/12 20:00	43.7	↓-1.2
4/12 20:10	42.6	↓-1.1
4/12 20:20	41.7	↓-0.9
4/12 20:30	41.0	↓-0.7
4/12 20:40	40.4	↓-0.6
4/12 20:50	40.0	↓-0.4
4/12 21:00	39.8	↓-0.2	干潮
4/12 21:10	39.8	0
4/12 21:20	40.0	↑0.2
4/12 21:30	40.3	↑0.3
4/12 21:40	40.9	↑0.6
4/12 21:50	41.6	↑0.7
4/12 22:00	42.4	↑0.8
4/12 22:10	43.5	↑1.1
4/12 22:20	44.7	↑1.2
4/12 22:30	46.0	↑1.3
4/12 22:40	47.5	↑1.5
4/12 22:50	49.1	↑1.6
4/12 23:00	50.8	↑1.7
4/12 23:10	52.6	↑1.8
4/12 23:20	54.5	↑1.9
4/12 23:30	56.4	↑1.9
4/12 23:40	58.5	↑2.1
4/12 23:50	60.5	↑2.0