20 (火)	03:23	10:56	17:21	21:06
	108cm	6cm	58cm	47cm
中潮 出 04:30 入 18:12 出 20:59 入 05:27 潮干狩り ◎ 08:44～13:24

コイセボイ（北海道）2049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	73.9	↑2.4
4/20 00:10	76.4	↑2.5
4/20 00:20	78.8	↑2.4
4/20 00:30	81.3	↑2.5
4/20 00:40	83.7	↑2.4
4/20 00:50	86.1	↑2.4
4/20 01:00	88.5	↑2.4
4/20 01:10	90.8	↑2.3
4/20 01:20	93.0	↑2.2
4/20 01:30	95.1	↑2.1
4/20 01:40	97.1	↑2.0
4/20 01:50	99.0	↑1.9
4/20 02:00	100.8	↑1.8
4/20 02:10	102.3	↑1.5
4/20 02:20	103.7	↑1.4
4/20 02:30	105.0	↑1.3
4/20 02:40	106.0	↑1.0
4/20 02:50	106.8	↑0.8
4/20 03:00	107.4	↑0.6
4/20 03:10	107.8	↑0.4
4/20 03:20	108.0	↑0.2	満潮
4/20 03:30	107.9	↓-0.1
4/20 03:40	107.6	↓-0.3
4/20 03:50	107.1	↓-0.5
4/20 04:00	106.3	↓-0.8
4/20 04:10	105.3	↓-1.0
4/20 04:20	104.0	↓-1.3
4/20 04:30	102.5	↓-1.5
4/20 04:40	100.8	↓-1.7
4/20 04:50	98.9	↓-1.9
4/20 05:00	96.8	↓-2.1
4/20 05:10	94.4	↓-2.4
4/20 05:20	91.9	↓-2.5
4/20 05:30	89.2	↓-2.7
4/20 05:40	86.3	↓-2.9
4/20 05:50	83.3	↓-3.0
4/20 06:00	80.2	↓-3.1
4/20 06:10	76.9	↓-3.3
4/20 06:20	73.5	↓-3.4
4/20 06:30	70.0	↓-3.5
4/20 06:40	66.5	↓-3.5
4/20 06:50	62.9	↓-3.6	最大潮位差
4/20 07:00	59.3	↓-3.6	最大潮位差
4/20 07:10	55.7	↓-3.6	最大潮位差
4/20 07:20	52.1	↓-3.6	最大潮位差
4/20 07:30	48.5	↓-3.6	最大潮位差
4/20 07:40	44.9	↓-3.6	最大潮位差
4/20 07:50	41.5	↓-3.4
4/20 08:00	38.1	↓-3.4
4/20 08:10	34.7	↓-3.4
4/20 08:20	31.6	↓-3.1
4/20 08:30	28.5	↓-3.1
4/20 08:40	25.6	↓-2.9
4/20 08:50	22.8	↓-2.8
4/20 09:00	20.2	↓-2.6
4/20 09:10	17.8	↓-2.4
4/20 09:20	15.6	↓-2.2
4/20 09:30	13.6	↓-2.0
4/20 09:40	11.8	↓-1.8
4/20 09:50	10.2	↓-1.6
4/20 10:00	8.8	↓-1.4
4/20 10:10	7.7	↓-1.1
4/20 10:20	6.8	↓-0.9
4/20 10:30	6.1	↓-0.7
4/20 10:40	5.7	↓-0.4
4/20 10:50	5.4	↓-0.3	干潮
4/20 11:00	5.4	0
4/20 11:10	5.6	↑0.2
4/20 11:20	6.1	↑0.5
4/20 11:30	6.7	↑0.6
4/20 11:40	7.5	↑0.8
4/20 11:50	8.5	↑1.0
4/20 12:00	9.7	↑1.2
4/20 12:10	11.0	↑1.3
4/20 12:20	12.5	↑1.5
4/20 12:30	14.1	↑1.6
4/20 12:40	15.9	↑1.8
4/20 12:50	17.7	↑1.8
4/20 13:00	19.7	↑2.0
4/20 13:10	21.7	↑2.0
4/20 13:20	23.8	↑2.1
4/20 13:30	25.9	↑2.1
4/20 13:40	28.1	↑2.2
4/20 13:50	30.3	↑2.2
4/20 14:00	32.4	↑2.1
4/20 14:10	34.6	↑2.2
4/20 14:20	36.7	↑2.1
4/20 14:30	38.8	↑2.1
4/20 14:40	40.8	↑2.0
4/20 14:50	42.7	↑1.9
4/20 15:00	44.6	↑1.9
4/20 15:10	46.4	↑1.8
4/20 15:20	48.0	↑1.6
4/20 15:30	49.6	↑1.6
4/20 15:40	51.0	↑1.4
4/20 15:50	52.3	↑1.3
4/20 16:00	53.5	↑1.2
4/20 16:10	54.5	↑1.0
4/20 16:20	55.4	↑0.9
4/20 16:30	56.1	↑0.7
4/20 16:40	56.8	↑0.7
4/20 16:50	57.2	↑0.4
4/20 17:00	57.5	↑0.3
4/20 17:10	57.7	↑0.2
4/20 17:20	57.8	↑0.1	満潮
4/20 17:30	57.8	0
4/20 17:40	57.6	↓-0.2
4/20 17:50	57.3	↓-0.3
4/20 18:00	56.9	↓-0.4
4/20 18:10	56.4	↓-0.5
4/20 18:20	55.9	↓-0.5
4/20 18:30	55.3	↓-0.6
4/20 18:40	54.6	↓-0.7
4/20 18:50	53.9	↓-0.7
4/20 19:00	53.1	↓-0.8
4/20 19:10	52.4	↓-0.7
4/20 19:20	51.6	↓-0.8
4/20 19:30	50.8	↓-0.8
4/20 19:40	50.1	↓-0.7
4/20 19:50	49.4	↓-0.7
4/20 20:00	48.7	↓-0.7
4/20 20:10	48.1	↓-0.6
4/20 20:20	47.6	↓-0.5
4/20 20:30	47.2	↓-0.4
4/20 20:40	46.8	↓-0.4
4/20 20:50	46.6	↓-0.2
4/20 21:00	46.5	↓-0.1	干潮
4/20 21:10	46.5	0
4/20 21:20	46.6	↑0.1
4/20 21:30	46.9	↑0.3
4/20 21:40	47.3	↑0.4
4/20 21:50	47.9	↑0.6
4/20 22:00	48.6	↑0.7
4/20 22:10	49.5	↑0.9
4/20 22:20	50.5	↑1.0
4/20 22:30	51.6	↑1.1
4/20 22:40	52.9	↑1.3
4/20 22:50	54.4	↑1.5
4/20 23:00	56.0	↑1.6
4/20 23:10	57.7	↑1.7
4/20 23:20	59.6	↑1.9
4/20 23:30	61.5	↑1.9
4/20 23:40	63.6	↑2.1
4/20 23:50	65.8	↑2.2