20 (木)	08:56	17:13	-	-
	81cm	34cm	-	-
長潮 出 04:31 入 18:11 出 12:41 入 01:31

コイセボイ（北海道）2051年04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
4/20 00:00	52.5	0
4/20 00:10	52.6	↑0.1
4/20 00:20	52.6	0
4/20 00:30	52.7	↑0.1
4/20 00:40	52.7	0
4/20 00:50	52.8	↑0.1
4/20 01:00	52.9	↑0.1
4/20 01:10	53.0	↑0.1
4/20 01:20	53.1	↑0.1
4/20 01:30	53.2	↑0.1
4/20 01:40	53.4	↑0.2
4/20 01:50	53.6	↑0.2
4/20 02:00	53.9	↑0.3
4/20 02:10	54.1	↑0.2
4/20 02:20	54.5	↑0.4
4/20 02:30	54.8	↑0.3
4/20 02:40	55.2	↑0.4
4/20 02:50	55.7	↑0.5
4/20 03:00	56.1	↑0.4
4/20 03:10	56.7	↑0.6
4/20 03:20	57.2	↑0.5
4/20 03:30	57.8	↑0.6
4/20 03:40	58.5	↑0.7
4/20 03:50	59.2	↑0.7
4/20 04:00	59.9	↑0.7
4/20 04:10	60.7	↑0.8
4/20 04:20	61.5	↑0.8
4/20 04:30	62.3	↑0.8
4/20 04:40	63.2	↑0.9
4/20 04:50	64.0	↑0.8
4/20 05:00	64.9	↑0.9
4/20 05:10	65.9	↑1.0
4/20 05:20	66.8	↑0.9
4/20 05:30	67.7	↑0.9
4/20 05:40	68.7	↑1.0
4/20 05:50	69.6	↑0.9
4/20 06:00	70.6	↑1.0
4/20 06:10	71.5	↑0.9
4/20 06:20	72.4	↑0.9
4/20 06:30	73.3	↑0.9
4/20 06:40	74.1	↑0.8
4/20 06:50	75.0	↑0.9
4/20 07:00	75.7	↑0.7
4/20 07:10	76.5	↑0.8
4/20 07:20	77.2	↑0.7
4/20 07:30	77.8	↑0.6
4/20 07:40	78.4	↑0.6
4/20 07:50	78.9	↑0.5
4/20 08:00	79.4	↑0.5
4/20 08:10	79.8	↑0.4
4/20 08:20	80.1	↑0.3
4/20 08:30	80.4	↑0.3
4/20 08:40	80.5	↑0.1
4/20 08:50	80.6	↑0.1	満潮
4/20 09:00	80.6	0
4/20 09:10	80.5	↓-0.1
4/20 09:20	80.3	↓-0.2
4/20 09:30	80.1	↓-0.2
4/20 09:40	79.7	↓-0.4
4/20 09:50	79.3	↓-0.4
4/20 10:00	78.8	↓-0.5
4/20 10:10	78.2	↓-0.6
4/20 10:20	77.5	↓-0.7
4/20 10:30	76.7	↓-0.8
4/20 10:40	75.8	↓-0.9
4/20 10:50	74.9	↓-0.9
4/20 11:00	73.9	↓-1.0
4/20 11:10	72.8	↓-1.1
4/20 11:20	71.6	↓-1.2
4/20 11:30	70.4	↓-1.2
4/20 11:40	69.2	↓-1.2
4/20 11:50	67.8	↓-1.4
4/20 12:00	66.5	↓-1.3
4/20 12:10	65.1	↓-1.4
4/20 12:20	63.6	↓-1.5
4/20 12:30	62.1	↓-1.5
4/20 12:40	60.6	↓-1.5
4/20 12:50	59.1	↓-1.5
4/20 13:00	57.6	↓-1.5
4/20 13:10	56.1	↓-1.5
4/20 13:20	54.6	↓-1.5
4/20 13:30	53.0	↓-1.6	最大潮位差
4/20 13:40	51.5	↓-1.5
4/20 13:50	50.1	↓-1.4
4/20 14:00	48.6	↓-1.5
4/20 14:10	47.2	↓-1.4
4/20 14:20	45.8	↓-1.4
4/20 14:30	44.5	↓-1.3
4/20 14:40	43.3	↓-1.2
4/20 14:50	42.0	↓-1.3
4/20 15:00	40.9	↓-1.1
4/20 15:10	39.8	↓-1.1
4/20 15:20	38.8	↓-1.0
4/20 15:30	37.9	↓-0.9
4/20 15:40	37.0	↓-0.9
4/20 15:50	36.3	↓-0.7
4/20 16:00	35.6	↓-0.7
4/20 16:10	35.0	↓-0.6
4/20 16:20	34.5	↓-0.5
4/20 16:30	34.0	↓-0.5
4/20 16:40	33.7	↓-0.3
4/20 16:50	33.5	↓-0.2
4/20 17:00	33.3	↓-0.2
4/20 17:10	33.3	0	干潮
4/20 17:20	33.3	0
4/20 17:30	33.4	↑0.1
4/20 17:40	33.6	↑0.2
4/20 17:50	33.9	↑0.3
4/20 18:00	34.2	↑0.3
4/20 18:10	34.6	↑0.4
4/20 18:20	35.1	↑0.5
4/20 18:30	35.7	↑0.6
4/20 18:40	36.3	↑0.6
4/20 18:50	37.0	↑0.7
4/20 19:00	37.7	↑0.7
4/20 19:10	38.5	↑0.8
4/20 19:20	39.3	↑0.8
4/20 19:30	40.2	↑0.9
4/20 19:40	41.0	↑0.8
4/20 19:50	41.9	↑0.9
4/20 20:00	42.9	↑1.0
4/20 20:10	43.8	↑0.9
4/20 20:20	44.7	↑0.9
4/20 20:30	45.7	↑1.0
4/20 20:40	46.6	↑0.9
4/20 20:50	47.5	↑0.9
4/20 21:00	48.4	↑0.9
4/20 21:10	49.3	↑0.9
4/20 21:20	50.1	↑0.8
4/20 21:30	50.9	↑0.8
4/20 21:40	51.7	↑0.8
4/20 21:50	52.5	↑0.8
4/20 22:00	53.2	↑0.7
4/20 22:10	53.8	↑0.6
4/20 22:20	54.4	↑0.6
4/20 22:30	55.0	↑0.6
4/20 22:40	55.4	↑0.4
4/20 22:50	55.9	↑0.5
4/20 23:00	56.3	↑0.4
4/20 23:10	56.6	↑0.3
4/20 23:20	56.9	↑0.3
4/20 23:30	57.1	↑0.2
4/20 23:40	57.2	↑0.1
4/20 23:50	57.3	↑0.1