20 (土)	07:07	00:50	18:17	11:53
	77cm	37cm	98cm	60cm
小潮 出 06:52 入 15:46 出 10:36 入 22:57

コイセボイ（北海道）2031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	38.5	↓-0.9
12/20 00:10	37.7	↓-0.8
12/20 00:20	37.1	↓-0.6
12/20 00:30	36.7	↓-0.4
12/20 00:40	36.5	↓-0.2	干潮
12/20 00:50	36.4	↓-0.1	干潮
12/20 01:00	36.5	↑0.1
12/20 01:10	36.8	↑0.3
12/20 01:20	37.2	↑0.4
12/20 01:30	37.8	↑0.6
12/20 01:40	38.5	↑0.7
12/20 01:50	39.3	↑0.8
12/20 02:00	40.3	↑1.0
12/20 02:10	41.4	↑1.1
12/20 02:20	42.6	↑1.2
12/20 02:30	43.9	↑1.3
12/20 02:40	45.3	↑1.4
12/20 02:50	46.7	↑1.4
12/20 03:00	48.3	↑1.6
12/20 03:10	49.9	↑1.6
12/20 03:20	51.5	↑1.6
12/20 03:30	53.1	↑1.6
12/20 03:40	54.8	↑1.7
12/20 03:50	56.5	↑1.7
12/20 04:00	58.2	↑1.7
12/20 04:10	59.8	↑1.6
12/20 04:20	61.4	↑1.6
12/20 04:30	63.0	↑1.6
12/20 04:40	64.5	↑1.5
12/20 04:50	66.0	↑1.5
12/20 05:00	67.4	↑1.4
12/20 05:10	68.7	↑1.3
12/20 05:20	70.0	↑1.3
12/20 05:30	71.1	↑1.1
12/20 05:40	72.1	↑1.0
12/20 05:50	73.1	↑1.0
12/20 06:00	73.9	↑0.8
12/20 06:10	74.6	↑0.7
12/20 06:20	75.2	↑0.6
12/20 06:30	75.7	↑0.5
12/20 06:40	76.1	↑0.4
12/20 06:50	76.3	↑0.2
12/20 07:00	76.4	↑0.1	満潮
12/20 07:10	76.4	0
12/20 07:20	76.3	↓-0.1
12/20 07:30	76.1	↓-0.2
12/20 07:40	75.8	↓-0.3
12/20 07:50	75.4	↓-0.4
12/20 08:00	75.0	↓-0.4
12/20 08:10	74.4	↓-0.6
12/20 08:20	73.7	↓-0.7
12/20 08:30	73.0	↓-0.7
12/20 08:40	72.2	↓-0.8
12/20 08:50	71.4	↓-0.8
12/20 09:00	70.6	↓-0.8
12/20 09:10	69.7	↓-0.9
12/20 09:20	68.8	↓-0.9
12/20 09:30	67.8	↓-1.0
12/20 09:40	66.9	↓-0.9
12/20 09:50	66.0	↓-0.9
12/20 10:00	65.1	↓-0.9
12/20 10:10	64.3	↓-0.8
12/20 10:20	63.5	↓-0.8
12/20 10:30	62.7	↓-0.8
12/20 10:40	62.0	↓-0.7
12/20 10:50	61.4	↓-0.6
12/20 11:00	60.9	↓-0.5
12/20 11:10	60.4	↓-0.5
12/20 11:20	60.0	↓-0.4
12/20 11:30	59.7	↓-0.3
12/20 11:40	59.5	↓-0.2
12/20 11:50	59.4	↓-0.1	干潮
12/20 12:00	59.5	↑0.1
12/20 12:10	59.6	↑0.1
12/20 12:20	59.9	↑0.3
12/20 12:30	60.2	↑0.3
12/20 12:40	60.7	↑0.5
12/20 12:50	61.3	↑0.6
12/20 13:00	62.0	↑0.7
12/20 13:10	62.8	↑0.8
12/20 13:20	63.7	↑0.9
12/20 13:30	64.7	↑1.0
12/20 13:40	65.8	↑1.1
12/20 13:50	67.0	↑1.2
12/20 14:00	68.3	↑1.3
12/20 14:10	69.6	↑1.3
12/20 14:20	71.0	↑1.4
12/20 14:30	72.5	↑1.5
12/20 14:40	74.0	↑1.5
12/20 14:50	75.5	↑1.5
12/20 15:00	77.1	↑1.6
12/20 15:10	78.6	↑1.5
12/20 15:20	80.2	↑1.6
12/20 15:30	81.8	↑1.6
12/20 15:40	83.3	↑1.5
12/20 15:50	84.9	↑1.6
12/20 16:00	86.4	↑1.5
12/20 16:10	87.8	↑1.4
12/20 16:20	89.2	↑1.4
12/20 16:30	90.5	↑1.3
12/20 16:40	91.7	↑1.2
12/20 16:50	92.8	↑1.1
12/20 17:00	93.9	↑1.1
12/20 17:10	94.8	↑0.9
12/20 17:20	95.6	↑0.8
12/20 17:30	96.3	↑0.7
12/20 17:40	96.9	↑0.6
12/20 17:50	97.3	↑0.4
12/20 18:00	97.6	↑0.3
12/20 18:10	97.7	↑0.1	満潮
12/20 18:20	97.7	0
12/20 18:30	97.6	↓-0.1
12/20 18:40	97.3	↓-0.3
12/20 18:50	96.9	↓-0.4
12/20 19:00	96.3	↓-0.6
12/20 19:10	95.6	↓-0.7
12/20 19:20	94.8	↓-0.8
12/20 19:30	93.8	↓-1.0
12/20 19:40	92.7	↓-1.1
12/20 19:50	91.4	↓-1.3
12/20 20:00	90.0	↓-1.4
12/20 20:10	88.6	↓-1.4
12/20 20:20	87.0	↓-1.6
12/20 20:30	85.3	↓-1.7
12/20 20:40	83.6	↓-1.7
12/20 20:50	81.7	↓-1.9
12/20 21:00	79.9	↓-1.8
12/20 21:10	77.9	↓-2.0
12/20 21:20	75.9	↓-2.0
12/20 21:30	73.9	↓-2.0
12/20 21:40	71.9	↓-2.0
12/20 21:50	69.8	↓-2.1	最大潮位差
12/20 22:00	67.8	↓-2.0
12/20 22:10	65.7	↓-2.1	最大潮位差
12/20 22:20	63.7	↓-2.0
12/20 22:30	61.8	↓-1.9
12/20 22:40	59.9	↓-1.9
12/20 22:50	58.0	↓-1.9
12/20 23:00	56.2	↓-1.8
12/20 23:10	54.6	↓-1.6
12/20 23:20	52.9	↓-1.7
12/20 23:30	51.4	↓-1.5
12/20 23:40	50.0	↓-1.4
12/20 23:50	48.8	↓-1.2