20 (土)	05:34	13:31	20:00	22:38
	101cm	20cm	50cm	48cm
中潮 出 04:30 入 18:12 出 23:29 入 08:31 潮干狩り ○ 12:13～14:57

コイセボイ（北海道）2052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	51.5	↑1.1
4/20 00:10	52.6	↑1.1
4/20 00:20	53.9	↑1.3
4/20 00:30	55.3	↑1.4
4/20 00:40	56.8	↑1.5
4/20 00:50	58.3	↑1.5
4/20 01:00	60.0	↑1.7
4/20 01:10	61.7	↑1.7
4/20 01:20	63.5	↑1.8
4/20 01:30	65.4	↑1.9
4/20 01:40	67.3	↑1.9
4/20 01:50	69.3	↑2.0
4/20 02:00	71.3	↑2.0
4/20 02:10	73.3	↑2.0
4/20 02:20	75.4	↑2.1
4/20 02:30	77.4	↑2.0
4/20 02:40	79.4	↑2.0
4/20 02:50	81.4	↑2.0
4/20 03:00	83.4	↑2.0
4/20 03:10	85.3	↑1.9
4/20 03:20	87.1	↑1.8
4/20 03:30	88.9	↑1.8
4/20 03:40	90.6	↑1.7
4/20 03:50	92.2	↑1.6
4/20 04:00	93.7	↑1.5
4/20 04:10	95.0	↑1.3
4/20 04:20	96.3	↑1.3
4/20 04:30	97.4	↑1.1
4/20 04:40	98.4	↑1.0
4/20 04:50	99.2	↑0.8
4/20 05:00	99.8	↑0.6
4/20 05:10	100.3	↑0.5
4/20 05:20	100.6	↑0.3
4/20 05:30	100.8	↑0.2	満潮
4/20 05:40	100.7	↓-0.1
4/20 05:50	100.5	↓-0.2
4/20 06:00	100.1	↓-0.4
4/20 06:10	99.6	↓-0.5
4/20 06:20	98.8	↓-0.8
4/20 06:30	97.9	↓-0.9
4/20 06:40	96.8	↓-1.1
4/20 06:50	95.5	↓-1.3
4/20 07:00	94.1	↓-1.4
4/20 07:10	92.5	↓-1.6
4/20 07:20	90.8	↓-1.7
4/20 07:30	88.9	↓-1.9
4/20 07:40	86.9	↓-2.0
4/20 07:50	84.8	↓-2.1
4/20 08:00	82.5	↓-2.3
4/20 08:10	80.2	↓-2.3
4/20 08:20	77.8	↓-2.4
4/20 08:30	75.2	↓-2.6
4/20 08:40	72.7	↓-2.5
4/20 08:50	70.0	↓-2.7	最大潮位差
4/20 09:00	67.3	↓-2.7	最大潮位差
4/20 09:10	64.6	↓-2.7	最大潮位差
4/20 09:20	61.9	↓-2.7	最大潮位差
4/20 09:30	59.2	↓-2.7	最大潮位差
4/20 09:40	56.5	↓-2.7	最大潮位差
4/20 09:50	53.8	↓-2.7	最大潮位差
4/20 10:00	51.1	↓-2.7	最大潮位差
4/20 10:10	48.5	↓-2.6
4/20 10:20	46.0	↓-2.5
4/20 10:30	43.5	↓-2.5
4/20 10:40	41.1	↓-2.4
4/20 10:50	38.8	↓-2.3
4/20 11:00	36.6	↓-2.2
4/20 11:10	34.5	↓-2.1
4/20 11:20	32.6	↓-1.9
4/20 11:30	30.7	↓-1.9
4/20 11:40	29.0	↓-1.7
4/20 11:50	27.4	↓-1.6
4/20 12:00	26.0	↓-1.4
4/20 12:10	24.7	↓-1.3
4/20 12:20	23.6	↓-1.1
4/20 12:30	22.6	↓-1.0
4/20 12:40	21.8	↓-0.8
4/20 12:50	21.1	↓-0.7
4/20 13:00	20.6	↓-0.5
4/20 13:10	20.3	↓-0.3
4/20 13:20	20.0	↓-0.3
4/20 13:30	20.0	0	干潮
4/20 13:40	20.0	0
4/20 13:50	20.2	↑0.2
4/20 14:00	20.5	↑0.3
4/20 14:10	21.0	↑0.5
4/20 14:20	21.5	↑0.5
4/20 14:30	22.2	↑0.7
4/20 14:40	23.0	↑0.8
4/20 14:50	23.8	↑0.8
4/20 15:00	24.8	↑1.0
4/20 15:10	25.8	↑1.0
4/20 15:20	26.9	↑1.1
4/20 15:30	28.0	↑1.1
4/20 15:40	29.2	↑1.2
4/20 15:50	30.4	↑1.2
4/20 16:00	31.6	↑1.2
4/20 16:10	32.8	↑1.2
4/20 16:20	34.1	↑1.3
4/20 16:30	35.3	↑1.2
4/20 16:40	36.5	↑1.2
4/20 16:50	37.7	↑1.2
4/20 17:00	38.9	↑1.2
4/20 17:10	40.0	↑1.1
4/20 17:20	41.1	↑1.1
4/20 17:30	42.2	↑1.1
4/20 17:40	43.2	↑1.0
4/20 17:50	44.1	↑0.9
4/20 18:00	44.9	↑0.8
4/20 18:10	45.7	↑0.8
4/20 18:20	46.4	↑0.7
4/20 18:30	47.1	↑0.7
4/20 18:40	47.7	↑0.6
4/20 18:50	48.2	↑0.5
4/20 19:00	48.6	↑0.4
4/20 19:10	48.9	↑0.3
4/20 19:20	49.2	↑0.3
4/20 19:30	49.4	↑0.2
4/20 19:40	49.5	↑0.1
4/20 19:50	49.6	↑0.1	満潮
4/20 20:00	49.6	0	満潮
4/20 20:10	49.6	0
4/20 20:20	49.5	↓-0.1
4/20 20:30	49.4	↓-0.1
4/20 20:40	49.3	↓-0.1
4/20 20:50	49.1	↓-0.2
4/20 21:00	48.9	↓-0.2
4/20 21:10	48.6	↓-0.3
4/20 21:20	48.4	↓-0.2
4/20 21:30	48.2	↓-0.2
4/20 21:40	48.0	↓-0.2
4/20 21:50	47.8	↓-0.2
4/20 22:00	47.6	↓-0.2
4/20 22:10	47.5	↓-0.1
4/20 22:20	47.3	↓-0.2
4/20 22:30	47.3	0	干潮
4/20 22:40	47.3	0
4/20 22:50	47.3	0
4/20 23:00	47.4	↑0.1
4/20 23:10	47.6	↑0.2
4/20 23:20	47.9	↑0.3
4/20 23:30	48.2	↑0.3
4/20 23:40	48.6	↑0.4
4/20 23:50	49.1	↑0.5