20 (土)	04:14	12:05	18:39	21:18
	111cm	7cm	51cm	47cm
中潮 出 04:30 入 18:12 出 22:37 入 06:19 潮干狩り ◎ 09:52～14:41

コイセボイ（北海道）2041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	65.5	↑2.0
4/20 00:10	67.7	↑2.2
4/20 00:20	69.9	↑2.2
4/20 00:30	72.2	↑2.3
4/20 00:40	74.5	↑2.3
4/20 00:50	76.9	↑2.4
4/20 01:00	79.3	↑2.4
4/20 01:10	81.7	↑2.4
4/20 01:20	84.1	↑2.4
4/20 01:30	86.5	↑2.4
4/20 01:40	88.9	↑2.4
4/20 01:50	91.2	↑2.3
4/20 02:00	93.4	↑2.2
4/20 02:10	95.6	↑2.2
4/20 02:20	97.7	↑2.1
4/20 02:30	99.6	↑1.9
4/20 02:40	101.5	↑1.9
4/20 02:50	103.2	↑1.7
4/20 03:00	104.7	↑1.5
4/20 03:10	106.1	↑1.4
4/20 03:20	107.3	↑1.2
4/20 03:30	108.3	↑1.0
4/20 03:40	109.1	↑0.8
4/20 03:50	109.7	↑0.6
4/20 04:00	110.1	↑0.4
4/20 04:10	110.3	↑0.2	満潮
4/20 04:20	110.3	0
4/20 04:30	110.0	↓-0.3
4/20 04:40	109.5	↓-0.5
4/20 04:50	108.8	↓-0.7
4/20 05:00	107.8	↓-1.0
4/20 05:10	106.7	↓-1.1
4/20 05:20	105.3	↓-1.4
4/20 05:30	103.7	↓-1.6
4/20 05:40	101.9	↓-1.8
4/20 05:50	99.8	↓-2.1
4/20 06:00	97.6	↓-2.2
4/20 06:10	95.2	↓-2.4
4/20 06:20	92.6	↓-2.6
4/20 06:30	89.9	↓-2.7
4/20 06:40	87.0	↓-2.9
4/20 06:50	84.0	↓-3.0
4/20 07:00	80.8	↓-3.2
4/20 07:10	77.6	↓-3.2
4/20 07:20	74.2	↓-3.4
4/20 07:30	70.8	↓-3.4
4/20 07:40	67.4	↓-3.4
4/20 07:50	63.8	↓-3.6	最大潮位差
4/20 08:00	60.3	↓-3.5
4/20 08:10	56.8	↓-3.5
4/20 08:20	53.2	↓-3.6	最大潮位差
4/20 08:30	49.8	↓-3.4
4/20 08:40	46.3	↓-3.5
4/20 08:50	42.9	↓-3.4
4/20 09:00	39.6	↓-3.3
4/20 09:10	36.4	↓-3.2
4/20 09:20	33.3	↓-3.1
4/20 09:30	30.3	↓-3.0
4/20 09:40	27.5	↓-2.8
4/20 09:50	24.8	↓-2.7
4/20 10:00	22.3	↓-2.5
4/20 10:10	19.9	↓-2.4
4/20 10:20	17.7	↓-2.2
4/20 10:30	15.7	↓-2.0
4/20 10:40	13.9	↓-1.8
4/20 10:50	12.3	↓-1.6
4/20 11:00	10.9	↓-1.4
4/20 11:10	9.7	↓-1.2
4/20 11:20	8.7	↓-1.0
4/20 11:30	7.9	↓-0.8
4/20 11:40	7.3	↓-0.6
4/20 11:50	6.9	↓-0.4
4/20 12:00	6.8	↓-0.1	干潮
4/20 12:10	6.8	0
4/20 12:20	7.0	↑0.2
4/20 12:30	7.4	↑0.4
4/20 12:40	7.9	↑0.5
4/20 12:50	8.7	↑0.8
4/20 13:00	9.6	↑0.9
4/20 13:10	10.6	↑1.0
4/20 13:20	11.8	↑1.2
4/20 13:30	13.1	↑1.3
4/20 13:40	14.4	↑1.3
4/20 13:50	15.9	↑1.5
4/20 14:00	17.5	↑1.6
4/20 14:10	19.2	↑1.7
4/20 14:20	20.9	↑1.7
4/20 14:30	22.6	↑1.7
4/20 14:40	24.4	↑1.8
4/20 14:50	26.2	↑1.8
4/20 15:00	28.0	↑1.8
4/20 15:10	29.8	↑1.8
4/20 15:20	31.5	↑1.7
4/20 15:30	33.3	↑1.8
4/20 15:40	34.9	↑1.6
4/20 15:50	36.6	↑1.7
4/20 16:00	38.1	↑1.5
4/20 16:10	39.6	↑1.5
4/20 16:20	41.0	↑1.4
4/20 16:30	42.4	↑1.4
4/20 16:40	43.6	↑1.2
4/20 16:50	44.7	↑1.1
4/20 17:00	45.7	↑1.0
4/20 17:10	46.7	↑1.0
4/20 17:20	47.5	↑0.8
4/20 17:30	48.2	↑0.7
4/20 17:40	48.8	↑0.6
4/20 17:50	49.3	↑0.5
4/20 18:00	49.7	↑0.4
4/20 18:10	49.9	↑0.2
4/20 18:20	50.1	↑0.2
4/20 18:30	50.2	↑0.1	満潮
4/20 18:40	50.3	↑0.1
4/20 18:50	50.2	↓-0.1
4/20 19:00	50.1	↓-0.1
4/20 19:10	49.9	↓-0.2
4/20 19:20	49.7	↓-0.2
4/20 19:30	49.4	↓-0.3
4/20 19:40	49.1	↓-0.3
4/20 19:50	48.8	↓-0.3
4/20 20:00	48.5	↓-0.3
4/20 20:10	48.1	↓-0.4
4/20 20:20	47.8	↓-0.3
4/20 20:30	47.5	↓-0.3
4/20 20:40	47.3	↓-0.2
4/20 20:50	47.1	↓-0.2
4/20 21:00	46.9	↓-0.2
4/20 21:10	46.8	↓-0.1	干潮
4/20 21:20	46.8	0
4/20 21:30	46.9	↑0.1
4/20 21:40	47.0	↑0.1
4/20 21:50	47.3	↑0.3
4/20 22:00	47.6	↑0.3
4/20 22:10	48.1	↑0.5
4/20 22:20	48.7	↑0.6
4/20 22:30	49.4	↑0.7
4/20 22:40	50.2	↑0.8
4/20 22:50	51.2	↑1.0
4/20 23:00	52.2	↑1.0
4/20 23:10	53.4	↑1.2
4/20 23:20	54.8	↑1.4
4/20 23:30	56.2	↑1.4
4/20 23:40	57.8	↑1.6
4/20 23:50	59.4	↑1.6