20 (木)	05:01	12:53	19:26	22:03
	105cm	14cm	51cm	48cm
中潮 出 04:29 入 18:13 出 07:40 入 23:02 潮干狩り ○ 11:02～15:01

コイセボイ（北海道）2056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	56.1	↑1.4
4/20 00:10	57.6	↑1.5
4/20 00:20	59.3	↑1.7
4/20 00:30	61.0	↑1.7
4/20 00:40	62.9	↑1.9
4/20 00:50	64.8	↑1.9
4/20 01:00	66.8	↑2.0
4/20 01:10	68.9	↑2.1
4/20 01:20	71.0	↑2.1
4/20 01:30	73.2	↑2.2
4/20 01:40	75.4	↑2.2
4/20 01:50	77.6	↑2.2
4/20 02:00	79.8	↑2.2
4/20 02:10	82.0	↑2.2
4/20 02:20	84.2	↑2.2
4/20 02:30	86.3	↑2.1
4/20 02:40	88.4	↑2.1
4/20 02:50	90.4	↑2.0
4/20 03:00	92.3	↑1.9
4/20 03:10	94.2	↑1.9
4/20 03:20	95.9	↑1.7
4/20 03:30	97.5	↑1.6
4/20 03:40	99.0	↑1.5
4/20 03:50	100.3	↑1.3
4/20 04:00	101.5	↑1.2
4/20 04:10	102.5	↑1.0
4/20 04:20	103.4	↑0.9
4/20 04:30	104.0	↑0.6
4/20 04:40	104.5	↑0.5
4/20 04:50	104.8	↑0.3
4/20 05:00	104.9	↑0.1	満潮
4/20 05:10	104.8	↓-0.1
4/20 05:20	104.5	↓-0.3
4/20 05:30	104.0	↓-0.5
4/20 05:40	103.2	↓-0.8
4/20 05:50	102.3	↓-0.9
4/20 06:00	101.2	↓-1.1
4/20 06:10	99.9	↓-1.3
4/20 06:20	98.4	↓-1.5
4/20 06:30	96.7	↓-1.7
4/20 06:40	94.9	↓-1.8
4/20 06:50	92.9	↓-2.0
4/20 07:00	90.7	↓-2.2
4/20 07:10	88.4	↓-2.3
4/20 07:20	85.9	↓-2.5
4/20 07:30	83.3	↓-2.6
4/20 07:40	80.6	↓-2.7
4/20 07:50	77.8	↓-2.8
4/20 08:00	74.9	↓-2.9
4/20 08:10	72.0	↓-2.9
4/20 08:20	68.9	↓-3.1	最大潮位差
4/20 08:30	65.9	↓-3.0
4/20 08:40	62.8	↓-3.1	最大潮位差
4/20 08:50	59.7	↓-3.1	最大潮位差
4/20 09:00	56.6	↓-3.1	最大潮位差
4/20 09:10	53.5	↓-3.1	最大潮位差
4/20 09:20	50.5	↓-3.0
4/20 09:30	47.5	↓-3.0
4/20 09:40	44.5	↓-3.0
4/20 09:50	41.7	↓-2.8
4/20 10:00	38.9	↓-2.8
4/20 10:10	36.2	↓-2.7
4/20 10:20	33.6	↓-2.6
4/20 10:30	31.2	↓-2.4
4/20 10:40	28.9	↓-2.3
4/20 10:50	26.7	↓-2.2
4/20 11:00	24.7	↓-2.0
4/20 11:10	22.8	↓-1.9
4/20 11:20	21.1	↓-1.7
4/20 11:30	19.6	↓-1.5
4/20 11:40	18.2	↓-1.4
4/20 11:50	17.1	↓-1.1
4/20 12:00	16.1	↓-1.0
4/20 12:10	15.2	↓-0.9
4/20 12:20	14.6	↓-0.6
4/20 12:30	14.1	↓-0.5
4/20 12:40	13.8	↓-0.3
4/20 12:50	13.7	↓-0.1	干潮
4/20 13:00	13.7	0
4/20 13:10	13.9	↑0.2
4/20 13:20	14.3	↑0.4
4/20 13:30	14.8	↑0.5
4/20 13:40	15.4	↑0.6
4/20 13:50	16.2	↑0.8
4/20 14:00	17.1	↑0.9
4/20 14:10	18.1	↑1.0
4/20 14:20	19.2	↑1.1
4/20 14:30	20.4	↑1.2
4/20 14:40	21.7	↑1.3
4/20 14:50	23.0	↑1.3
4/20 15:00	24.4	↑1.4
4/20 15:10	25.9	↑1.5
4/20 15:20	27.3	↑1.4
4/20 15:30	28.8	↑1.5
4/20 15:40	30.3	↑1.5
4/20 15:50	31.8	↑1.5
4/20 16:00	33.3	↑1.5
4/20 16:10	34.8	↑1.5
4/20 16:20	36.2	↑1.4
4/20 16:30	37.6	↑1.4
4/20 16:40	39.0	↑1.4
4/20 16:50	40.3	↑1.3
4/20 17:00	41.5	↑1.2
4/20 17:10	42.7	↑1.2
4/20 17:20	43.8	↑1.1
4/20 17:30	44.8	↑1.0
4/20 17:40	45.7	↑0.9
4/20 17:50	46.5	↑0.8
4/20 18:00	47.2	↑0.7
4/20 18:10	47.9	↑0.7
4/20 18:20	48.5	↑0.6
4/20 18:30	48.9	↑0.4
4/20 18:40	49.3	↑0.4
4/20 18:50	49.6	↑0.3
4/20 19:00	49.8	↑0.2
4/20 19:10	50.0	↑0.2
4/20 19:20	50.0	0	満潮
4/20 19:30	50.0	0
4/20 19:40	50.0	0
4/20 19:50	49.8	↓-0.2
4/20 20:00	49.7	↓-0.1
4/20 20:10	49.5	↓-0.2
4/20 20:20	49.3	↓-0.2
4/20 20:30	49.0	↓-0.3
4/20 20:40	48.7	↓-0.3
4/20 20:50	48.5	↓-0.2
4/20 21:00	48.2	↓-0.3
4/20 21:10	48.0	↓-0.2
4/20 21:20	47.7	↓-0.3
4/20 21:30	47.5	↓-0.2
4/20 21:40	47.4	↓-0.1
4/20 21:50	47.3	↓-0.1
4/20 22:00	47.2	↓-0.1	干潮
4/20 22:10	47.3	↑0.1
4/20 22:20	47.3	0
4/20 22:30	47.5	↑0.2
4/20 22:40	47.8	↑0.3
4/20 22:50	48.1	↑0.3
4/20 23:00	48.6	↑0.5
4/20 23:10	49.1	↑0.5
4/20 23:20	49.8	↑0.7
4/20 23:30	50.5	↑0.7
4/20 23:40	51.4	↑0.9
4/20 23:50	52.3	↑0.9