20 (火)	04:16	08:44	15:30	22:41
	69cm	50cm	116cm	29cm
大潮 出 06:13 入 16:58 出 17:42 入 06:50

コイセボイ（北海道）2057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	33.3	↑1.6
2/20 00:10	35.0	↑1.7
2/20 00:20	36.8	↑1.8
2/20 00:30	38.7	↑1.9
2/20 00:40	40.6	↑1.9
2/20 00:50	42.5	↑1.9
2/20 01:00	44.5	↑2.0
2/20 01:10	46.5	↑2.0
2/20 01:20	48.4	↑1.9
2/20 01:30	50.4	↑2.0
2/20 01:40	52.2	↑1.8
2/20 01:50	54.1	↑1.9
2/20 02:00	55.9	↑1.8
2/20 02:10	57.5	↑1.6
2/20 02:20	59.1	↑1.6
2/20 02:30	60.6	↑1.5
2/20 02:40	62.0	↑1.4
2/20 02:50	63.3	↑1.3
2/20 03:00	64.4	↑1.1
2/20 03:10	65.4	↑1.0
2/20 03:20	66.3	↑0.9
2/20 03:30	67.0	↑0.7
2/20 03:40	67.6	↑0.6
2/20 03:50	68.0	↑0.4
2/20 04:00	68.3	↑0.3
2/20 04:10	68.5	↑0.2	満潮
2/20 04:20	68.5	0
2/20 04:30	68.3	↓-0.2
2/20 04:40	68.1	↓-0.2
2/20 04:50	67.7	↓-0.4
2/20 05:00	67.2	↓-0.5
2/20 05:10	66.6	↓-0.6
2/20 05:20	65.8	↓-0.8
2/20 05:30	65.0	↓-0.8
2/20 05:40	64.1	↓-0.9
2/20 05:50	63.2	↓-0.9
2/20 06:00	62.2	↓-1.0
2/20 06:10	61.1	↓-1.1
2/20 06:20	60.0	↓-1.1
2/20 06:30	58.9	↓-1.1
2/20 06:40	57.8	↓-1.1
2/20 06:50	56.7	↓-1.1
2/20 07:00	55.6	↓-1.1
2/20 07:10	54.6	↓-1.0
2/20 07:20	53.6	↓-1.0
2/20 07:30	52.7	↓-0.9
2/20 07:40	51.9	↓-0.8
2/20 07:50	51.2	↓-0.7
2/20 08:00	50.5	↓-0.7
2/20 08:10	50.0	↓-0.5
2/20 08:20	49.6	↓-0.4
2/20 08:30	49.4	↓-0.2
2/20 08:40	49.3	↓-0.1	干潮
2/20 08:50	49.3	0
2/20 09:00	49.5	↑0.2
2/20 09:10	49.8	↑0.3
2/20 09:20	50.3	↑0.5
2/20 09:30	51.0	↑0.7
2/20 09:40	51.8	↑0.8
2/20 09:50	52.8	↑1.0
2/20 10:00	54.0	↑1.2
2/20 10:10	55.3	↑1.3
2/20 10:20	56.8	↑1.5
2/20 10:30	58.5	↑1.7
2/20 10:40	60.2	↑1.7
2/20 10:50	62.1	↑1.9
2/20 11:00	64.2	↑2.1
2/20 11:10	66.3	↑2.1
2/20 11:20	68.6	↑2.3
2/20 11:30	70.9	↑2.3
2/20 11:40	73.3	↑2.4
2/20 11:50	75.8	↑2.5
2/20 12:00	78.4	↑2.6
2/20 12:10	80.9	↑2.5
2/20 12:20	83.5	↑2.6
2/20 12:30	86.1	↑2.6
2/20 12:40	88.7	↑2.6
2/20 12:50	91.2	↑2.5
2/20 13:00	93.7	↑2.5
2/20 13:10	96.1	↑2.4
2/20 13:20	98.4	↑2.3
2/20 13:30	100.7	↑2.3
2/20 13:40	102.8	↑2.1
2/20 13:50	104.8	↑2.0
2/20 14:00	106.7	↑1.9
2/20 14:10	108.4	↑1.7
2/20 14:20	109.9	↑1.5
2/20 14:30	111.3	↑1.4
2/20 14:40	112.4	↑1.1
2/20 14:50	113.4	↑1.0
2/20 15:00	114.1	↑0.7
2/20 15:10	114.7	↑0.6
2/20 15:20	115.0	↑0.3	満潮
2/20 15:30	115.1	↑0.1	満潮
2/20 15:40	115.0	↓-0.1
2/20 15:50	114.6	↓-0.4
2/20 16:00	114.0	↓-0.6
2/20 16:10	113.2	↓-0.8
2/20 16:20	112.1	↓-1.1
2/20 16:30	110.9	↓-1.2
2/20 16:40	109.4	↓-1.5
2/20 16:50	107.7	↓-1.7
2/20 17:00	105.8	↓-1.9
2/20 17:10	103.8	↓-2.0
2/20 17:20	101.5	↓-2.3
2/20 17:30	99.1	↓-2.4
2/20 17:40	96.5	↓-2.6
2/20 17:50	93.8	↓-2.7
2/20 18:00	91.0	↓-2.8
2/20 18:10	88.1	↓-2.9
2/20 18:20	85.0	↓-3.1
2/20 18:30	81.9	↓-3.1
2/20 18:40	78.8	↓-3.1
2/20 18:50	75.6	↓-3.2
2/20 19:00	72.4	↓-3.2
2/20 19:10	69.1	↓-3.3	最大潮位差
2/20 19:20	65.9	↓-3.2
2/20 19:30	62.8	↓-3.1
2/20 19:40	59.6	↓-3.2
2/20 19:50	56.6	↓-3.0
2/20 20:00	53.6	↓-3.0
2/20 20:10	50.8	↓-2.8
2/20 20:20	48.0	↓-2.8
2/20 20:30	45.4	↓-2.6
2/20 20:40	42.9	↓-2.5
2/20 20:50	40.6	↓-2.3
2/20 21:00	38.5	↓-2.1
2/20 21:10	36.5	↓-2.0
2/20 21:20	34.8	↓-1.7
2/20 21:30	33.2	↓-1.6
2/20 21:40	31.8	↓-1.4
2/20 21:50	30.6	↓-1.2
2/20 22:00	29.7	↓-0.9
2/20 22:10	29.0	↓-0.7
2/20 22:20	28.4	↓-0.6
2/20 22:30	28.1	↓-0.3
2/20 22:40	28.0	↓-0.1	干潮
2/20 22:50	28.1	↑0.1
2/20 23:00	28.4	↑0.3
2/20 23:10	28.9	↑0.5
2/20 23:20	29.6	↑0.7
2/20 23:30	30.5	↑0.9
2/20 23:40	31.5	↑1.0
2/20 23:50	32.7	↑1.2