20 (月)	07:41	01:27	19:03	12:44
	77cm	43cm	92cm	60cm
小潮 出 06:52 入 15:46 出 23:44 入 10:52

コイセボイ（北海道）2027年12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
12/20 00:00	47.3	↓-1.3
12/20 00:10	46.2	↓-1.1
12/20 00:20	45.2	↓-1.0
12/20 00:30	44.3	↓-0.9
12/20 00:40	43.6	↓-0.7
12/20 00:50	43.0	↓-0.6
12/20 01:00	42.5	↓-0.5
12/20 01:10	42.2	↓-0.3
12/20 01:20	42.1	↓-0.1	干潮
12/20 01:30	42.1	0
12/20 01:40	42.2	↑0.1
12/20 01:50	42.5	↑0.3
12/20 02:00	42.9	↑0.4
12/20 02:10	43.4	↑0.5
12/20 02:20	44.1	↑0.7
12/20 02:30	44.8	↑0.7
12/20 02:40	45.7	↑0.9
12/20 02:50	46.7	↑1.0
12/20 03:00	47.7	↑1.0
12/20 03:10	48.9	↑1.2
12/20 03:20	50.1	↑1.2
12/20 03:30	51.4	↑1.3
12/20 03:40	52.7	↑1.3
12/20 03:50	54.1	↑1.4
12/20 04:00	55.5	↑1.4
12/20 04:10	56.9	↑1.4
12/20 04:20	58.4	↑1.5
12/20 04:30	59.8	↑1.4
12/20 04:40	61.3	↑1.5
12/20 04:50	62.7	↑1.4
12/20 05:00	64.1	↑1.4
12/20 05:10	65.4	↑1.3
12/20 05:20	66.7	↑1.3
12/20 05:30	68.0	↑1.3
12/20 05:40	69.1	↑1.1
12/20 05:50	70.3	↑1.2
12/20 06:00	71.3	↑1.0
12/20 06:10	72.2	↑0.9
12/20 06:20	73.1	↑0.9
12/20 06:30	73.9	↑0.8
12/20 06:40	74.5	↑0.6
12/20 06:50	75.1	↑0.6
12/20 07:00	75.6	↑0.5
12/20 07:10	75.9	↑0.3
12/20 07:20	76.2	↑0.3
12/20 07:30	76.3	↑0.1
12/20 07:40	76.4	↑0.1	満潮
12/20 07:50	76.3	↓-0.1
12/20 08:00	76.2	↓-0.1
12/20 08:10	76.0	↓-0.2
12/20 08:20	75.6	↓-0.4
12/20 08:30	75.2	↓-0.4
12/20 08:40	74.7	↓-0.5
12/20 08:50	74.2	↓-0.5
12/20 09:00	73.5	↓-0.7
12/20 09:10	72.8	↓-0.7
12/20 09:20	72.1	↓-0.7
12/20 09:30	71.3	↓-0.8
12/20 09:40	70.5	↓-0.8
12/20 09:50	69.6	↓-0.9
12/20 10:00	68.8	↓-0.8
12/20 10:10	67.9	↓-0.9
12/20 10:20	67.0	↓-0.9
12/20 10:30	66.1	↓-0.9
12/20 10:40	65.3	↓-0.8
12/20 10:50	64.5	↓-0.8
12/20 11:00	63.7	↓-0.8
12/20 11:10	62.9	↓-0.8
12/20 11:20	62.3	↓-0.6
12/20 11:30	61.6	↓-0.7
12/20 11:40	61.0	↓-0.6
12/20 11:50	60.5	↓-0.5
12/20 12:00	60.1	↓-0.4
12/20 12:10	59.8	↓-0.3
12/20 12:20	59.5	↓-0.3
12/20 12:30	59.4	↓-0.1
12/20 12:40	59.3	↓-0.1	干潮
12/20 12:50	59.3	0
12/20 13:00	59.4	↑0.1
12/20 13:10	59.6	↑0.2
12/20 13:20	60.0	↑0.4
12/20 13:30	60.4	↑0.4
12/20 13:40	60.9	↑0.5
12/20 13:50	61.5	↑0.6
12/20 14:00	62.2	↑0.7
12/20 14:10	63.0	↑0.8
12/20 14:20	63.8	↑0.8
12/20 14:30	64.8	↑1.0
12/20 14:40	65.8	↑1.0
12/20 14:50	66.9	↑1.1
12/20 15:00	68.0	↑1.1
12/20 15:10	69.2	↑1.2
12/20 15:20	70.4	↑1.2
12/20 15:30	71.7	↑1.3
12/20 15:40	73.0	↑1.3
12/20 15:50	74.3	↑1.3
12/20 16:00	75.6	↑1.3
12/20 16:10	77.0	↑1.4
12/20 16:20	78.3	↑1.3
12/20 16:30	79.6	↑1.3
12/20 16:40	80.8	↑1.2
12/20 16:50	82.1	↑1.3
12/20 17:00	83.2	↑1.1
12/20 17:10	84.4	↑1.2
12/20 17:20	85.4	↑1.0
12/20 17:30	86.4	↑1.0
12/20 17:40	87.3	↑0.9
12/20 17:50	88.2	↑0.9
12/20 18:00	88.9	↑0.7
12/20 18:10	89.5	↑0.6
12/20 18:20	90.1	↑0.6
12/20 18:30	90.5	↑0.4
12/20 18:40	90.8	↑0.3
12/20 18:50	91.0	↑0.2
12/20 19:00	91.1	↑0.1	満潮
12/20 19:10	91.0	↓-0.1
12/20 19:20	90.9	↓-0.1
12/20 19:30	90.6	↓-0.3
12/20 19:40	90.2	↓-0.4
12/20 19:50	89.7	↓-0.5
12/20 20:00	89.1	↓-0.6
12/20 20:10	88.4	↓-0.7
12/20 20:20	87.5	↓-0.9
12/20 20:30	86.6	↓-0.9
12/20 20:40	85.5	↓-1.1
12/20 20:50	84.4	↓-1.1
12/20 21:00	83.2	↓-1.2
12/20 21:10	81.9	↓-1.3
12/20 21:20	80.5	↓-1.4
12/20 21:30	79.1	↓-1.4
12/20 21:40	77.6	↓-1.5
12/20 21:50	76.1	↓-1.5
12/20 22:00	74.5	↓-1.6	最大潮位差
12/20 22:10	72.9	↓-1.6	最大潮位差
12/20 22:20	71.3	↓-1.6	最大潮位差
12/20 22:30	69.7	↓-1.6	最大潮位差
12/20 22:40	68.1	↓-1.6	最大潮位差
12/20 22:50	66.5	↓-1.6	最大潮位差
12/20 23:00	64.9	↓-1.6	最大潮位差
12/20 23:10	63.4	↓-1.5
12/20 23:20	61.9	↓-1.5
12/20 23:30	60.5	↓-1.4
12/20 23:40	59.1	↓-1.4
12/20 23:50	57.8	↓-1.3