13 (月)	10:12	03:32	21:49	15:52
	78cm	50cm	80cm	62cm
長潮 出 06:47 入 15:44 出 12:48 入 00:34

コイセボイ（北海道）2021年12月13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
12/13 00:00	67.9	↓-1.4
12/13 00:10	66.4	↓-1.5	最大潮位差
12/13 00:20	65.0	↓-1.4
12/13 00:30	63.6	↓-1.4
12/13 00:40	62.2	↓-1.4
12/13 00:50	60.9	↓-1.3
12/13 01:00	59.6	↓-1.3
12/13 01:10	58.4	↓-1.2
12/13 01:20	57.2	↓-1.2
12/13 01:30	56.1	↓-1.1
12/13 01:40	55.0	↓-1.1
12/13 01:50	54.0	↓-1.0
12/13 02:00	53.1	↓-0.9
12/13 02:10	52.3	↓-0.8
12/13 02:20	51.6	↓-0.7
12/13 02:30	51.0	↓-0.6
12/13 02:40	50.4	↓-0.6
12/13 02:50	50.0	↓-0.4
12/13 03:00	49.6	↓-0.4
12/13 03:10	49.4	↓-0.2
12/13 03:20	49.2	↓-0.2
12/13 03:30	49.2	0	干潮
12/13 03:40	49.2	0
12/13 03:50	49.3	↑0.1
12/13 04:00	49.6	↑0.3
12/13 04:10	49.9	↑0.3
12/13 04:20	50.3	↑0.4
12/13 04:30	50.8	↑0.5
12/13 04:40	51.4	↑0.6
12/13 04:50	52.1	↑0.7
12/13 05:00	52.8	↑0.7
12/13 05:10	53.6	↑0.8
12/13 05:20	54.5	↑0.9
12/13 05:30	55.4	↑0.9
12/13 05:40	56.4	↑1.0
12/13 05:50	57.4	↑1.0
12/13 06:00	58.5	↑1.1
12/13 06:10	59.5	↑1.0
12/13 06:20	60.7	↑1.2
12/13 06:30	61.8	↑1.1
12/13 06:40	62.9	↑1.1
12/13 06:50	64.0	↑1.1
12/13 07:00	65.2	↑1.2
12/13 07:10	66.3	↑1.1
12/13 07:20	67.4	↑1.1
12/13 07:30	68.4	↑1.0
12/13 07:40	69.5	↑1.1
12/13 07:50	70.5	↑1.0
12/13 08:00	71.4	↑0.9
12/13 08:10	72.3	↑0.9
12/13 08:20	73.2	↑0.9
12/13 08:30	74.0	↑0.8
12/13 08:40	74.7	↑0.7
12/13 08:50	75.3	↑0.6
12/13 09:00	75.9	↑0.6
12/13 09:10	76.4	↑0.5
12/13 09:20	76.9	↑0.5
12/13 09:30	77.2	↑0.3
12/13 09:40	77.5	↑0.3
12/13 09:50	77.7	↑0.2
12/13 10:00	77.8	↑0.1
12/13 10:10	77.9	↑0.1	満潮
12/13 10:20	77.8	↓-0.1
12/13 10:30	77.7	↓-0.1
12/13 10:40	77.5	↓-0.2
12/13 10:50	77.3	↓-0.2
12/13 11:00	77.0	↓-0.3
12/13 11:10	76.6	↓-0.4
12/13 11:20	76.1	↓-0.5
12/13 11:30	75.6	↓-0.5
12/13 11:40	75.1	↓-0.5
12/13 11:50	74.5	↓-0.6
12/13 12:00	73.9	↓-0.6
12/13 12:10	73.2	↓-0.7
12/13 12:20	72.5	↓-0.7
12/13 12:30	71.8	↓-0.7
12/13 12:40	71.0	↓-0.8
12/13 12:50	70.3	↓-0.7
12/13 13:00	69.5	↓-0.8
12/13 13:10	68.8	↓-0.7
12/13 13:20	68.0	↓-0.8
12/13 13:30	67.3	↓-0.7
12/13 13:40	66.6	↓-0.7
12/13 13:50	65.9	↓-0.7
12/13 14:00	65.2	↓-0.7
12/13 14:10	64.6	↓-0.6
12/13 14:20	64.0	↓-0.6
12/13 14:30	63.5	↓-0.5
12/13 14:40	63.0	↓-0.5
12/13 14:50	62.6	↓-0.4
12/13 15:00	62.2	↓-0.4
12/13 15:10	61.9	↓-0.3
12/13 15:20	61.7	↓-0.2
12/13 15:30	61.5	↓-0.2
12/13 15:40	61.4	↓-0.1
12/13 15:50	61.4	0	干潮
12/13 16:00	61.4	0
12/13 16:10	61.5	↑0.1
12/13 16:20	61.6	↑0.1
12/13 16:30	61.9	↑0.3
12/13 16:40	62.2	↑0.3
12/13 16:50	62.5	↑0.3
12/13 17:00	62.9	↑0.4
12/13 17:10	63.4	↑0.5
12/13 17:20	63.9	↑0.5
12/13 17:30	64.5	↑0.6
12/13 17:40	65.2	↑0.7
12/13 17:50	65.8	↑0.6
12/13 18:00	66.5	↑0.7
12/13 18:10	67.3	↑0.8
12/13 18:20	68.0	↑0.7
12/13 18:30	68.8	↑0.8
12/13 18:40	69.6	↑0.8
12/13 18:50	70.4	↑0.8
12/13 19:00	71.2	↑0.8
12/13 19:10	72.0	↑0.8
12/13 19:20	72.8	↑0.8
12/13 19:30	73.6	↑0.8
12/13 19:40	74.3	↑0.7
12/13 19:50	75.0	↑0.7
12/13 20:00	75.7	↑0.7
12/13 20:10	76.4	↑0.7
12/13 20:20	77.0	↑0.6
12/13 20:30	77.5	↑0.5
12/13 20:40	78.0	↑0.5
12/13 20:50	78.5	↑0.5
12/13 21:00	78.8	↑0.3
12/13 21:10	79.2	↑0.4
12/13 21:20	79.4	↑0.2
12/13 21:30	79.6	↑0.2
12/13 21:40	79.7	↑0.1	満潮
12/13 21:50	79.7	0
12/13 22:00	79.6	↓-0.1
12/13 22:10	79.5	↓-0.1
12/13 22:20	79.3	↓-0.2
12/13 22:30	79.0	↓-0.3
12/13 22:40	78.7	↓-0.3
12/13 22:50	78.2	↓-0.5
12/13 23:00	77.8	↓-0.4
12/13 23:10	77.2	↓-0.6
12/13 23:20	76.6	↓-0.6
12/13 23:30	75.9	↓-0.7
12/13 23:40	75.1	↓-0.8
12/13 23:50	74.3	↓-0.8