20 (木)	03:14	06:03	13:22	21:05
	63cm	60cm	112cm	28cm
大潮 出 06:14 入 16:58 出 04:53 入 15:25

コイセボイ（北海道）2031年02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
2/20 00:00	48.0	↑1.4
2/20 00:10	49.4	↑1.4
2/20 00:20	50.7	↑1.3
2/20 00:30	52.0	↑1.3
2/20 00:40	53.3	↑1.3
2/20 00:50	54.4	↑1.1
2/20 01:00	55.5	↑1.1
2/20 01:10	56.6	↑1.1
2/20 01:20	57.5	↑0.9
2/20 01:30	58.4	↑0.9
2/20 01:40	59.2	↑0.8
2/20 01:50	59.9	↑0.7
2/20 02:00	60.6	↑0.7
2/20 02:10	61.1	↑0.5
2/20 02:20	61.6	↑0.5
2/20 02:30	61.9	↑0.3
2/20 02:40	62.2	↑0.3
2/20 02:50	62.4	↑0.2
2/20 03:00	62.5	↑0.1
2/20 03:10	62.6	↑0.1	満潮
2/20 03:20	62.6	0
2/20 03:30	62.5	↓-0.1
2/20 03:40	62.4	↓-0.1
2/20 03:50	62.2	↓-0.2
2/20 04:00	62.0	↓-0.2
2/20 04:10	61.8	↓-0.2
2/20 04:20	61.5	↓-0.3
2/20 04:30	61.2	↓-0.3
2/20 04:40	60.9	↓-0.3
2/20 04:50	60.6	↓-0.3
2/20 05:00	60.3	↓-0.3
2/20 05:10	60.0	↓-0.3
2/20 05:20	59.8	↓-0.2
2/20 05:30	59.6	↓-0.2
2/20 05:40	59.4	↓-0.2
2/20 05:50	59.3	↓-0.1
2/20 06:00	59.3	0	干潮
2/20 06:10	59.3	0
2/20 06:20	59.4	↑0.1
2/20 06:30	59.6	↑0.2
2/20 06:40	59.8	↑0.2
2/20 06:50	60.2	↑0.4
2/20 07:00	60.6	↑0.4
2/20 07:10	61.2	↑0.6
2/20 07:20	61.8	↑0.6
2/20 07:30	62.6	↑0.8
2/20 07:40	63.4	↑0.8
2/20 07:50	64.4	↑1.0
2/20 08:00	65.4	↑1.0
2/20 08:10	66.6	↑1.2
2/20 08:20	67.9	↑1.3
2/20 08:30	69.2	↑1.3
2/20 08:40	70.7	↑1.5
2/20 08:50	72.2	↑1.5
2/20 09:00	73.8	↑1.6
2/20 09:10	75.5	↑1.7
2/20 09:20	77.3	↑1.8
2/20 09:30	79.1	↑1.8
2/20 09:40	80.9	↑1.8
2/20 09:50	82.8	↑1.9
2/20 10:00	84.7	↑1.9
2/20 10:10	86.6	↑1.9
2/20 10:20	88.6	↑2.0
2/20 10:30	90.5	↑1.9
2/20 10:40	92.4	↑1.9
2/20 10:50	94.3	↑1.9
2/20 11:00	96.1	↑1.8
2/20 11:10	97.9	↑1.8
2/20 11:20	99.6	↑1.7
2/20 11:30	101.2	↑1.6
2/20 11:40	102.8	↑1.6
2/20 11:50	104.2	↑1.4
2/20 12:00	105.5	↑1.3
2/20 12:10	106.7	↑1.2
2/20 12:20	107.8	↑1.1
2/20 12:30	108.7	↑0.9
2/20 12:40	109.5	↑0.8
2/20 12:50	110.1	↑0.6
2/20 13:00	110.6	↑0.5
2/20 13:10	110.9	↑0.3
2/20 13:20	111.0	↑0.1	満潮
2/20 13:30	110.9	↓-0.1
2/20 13:40	110.7	↓-0.2
2/20 13:50	110.3	↓-0.4
2/20 14:00	109.7	↓-0.6
2/20 14:10	108.9	↓-0.8
2/20 14:20	107.9	↓-1.0
2/20 14:30	106.7	↓-1.2
2/20 14:40	105.4	↓-1.3
2/20 14:50	103.9	↓-1.5
2/20 15:00	102.2	↓-1.7
2/20 15:10	100.4	↓-1.8
2/20 15:20	98.4	↓-2.0
2/20 15:30	96.3	↓-2.1
2/20 15:40	94.1	↓-2.2
2/20 15:50	91.7	↓-2.4
2/20 16:00	89.2	↓-2.5
2/20 16:10	86.7	↓-2.5
2/20 16:20	84.0	↓-2.7
2/20 16:30	81.3	↓-2.7
2/20 16:40	78.5	↓-2.8
2/20 16:50	75.6	↓-2.9	最大潮位差
2/20 17:00	72.8	↓-2.8
2/20 17:10	69.9	↓-2.9	最大潮位差
2/20 17:20	67.0	↓-2.9	最大潮位差
2/20 17:30	64.1	↓-2.9	最大潮位差
2/20 17:40	61.3	↓-2.8
2/20 17:50	58.5	↓-2.8
2/20 18:00	55.7	↓-2.8
2/20 18:10	53.0	↓-2.7
2/20 18:20	50.4	↓-2.6
2/20 18:30	47.9	↓-2.5
2/20 18:40	45.5	↓-2.4
2/20 18:50	43.2	↓-2.3
2/20 19:00	41.1	↓-2.1
2/20 19:10	39.1	↓-2.0
2/20 19:20	37.2	↓-1.9
2/20 19:30	35.5	↓-1.7
2/20 19:40	33.9	↓-1.6
2/20 19:50	32.5	↓-1.4
2/20 20:00	31.3	↓-1.2
2/20 20:10	30.3	↓-1.0
2/20 20:20	29.4	↓-0.9
2/20 20:30	28.7	↓-0.7
2/20 20:40	28.2	↓-0.5
2/20 20:50	27.9	↓-0.3
2/20 21:00	27.7	↓-0.2	干潮
2/20 21:10	27.7	0
2/20 21:20	27.9	↑0.2
2/20 21:30	28.3	↑0.4
2/20 21:40	28.8	↑0.5
2/20 21:50	29.5	↑0.7
2/20 22:00	30.3	↑0.8
2/20 22:10	31.2	↑0.9
2/20 22:20	32.3	↑1.1
2/20 22:30	33.5	↑1.2
2/20 22:40	34.7	↑1.2
2/20 22:50	36.1	↑1.4
2/20 23:00	37.6	↑1.5
2/20 23:10	39.1	↑1.5
2/20 23:20	40.7	↑1.6
2/20 23:30	42.3	↑1.6
2/20 23:40	43.9	↑1.6
2/20 23:50	45.6	↑1.7