20 (木)	03:42	11:33	18:07	20:52
	113cm	4cm	51cm	47cm
中潮 出 04:30 入 18:12 出 05:37 入 21:59 潮干狩り ◎ 09:13～14:17

コイセボイ（北海道）2045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	73.7	↑2.3
4/20 00:10	76.2	↑2.5
4/20 00:20	78.6	↑2.4
4/20 00:30	81.1	↑2.5
4/20 00:40	83.6	↑2.5
4/20 00:50	86.1	↑2.5
4/20 01:00	88.6	↑2.5
4/20 01:10	91.0	↑2.4
4/20 01:20	93.4	↑2.4
4/20 01:30	95.7	↑2.3
4/20 01:40	97.9	↑2.2
4/20 01:50	100.1	↑2.2
4/20 02:00	102.1	↑2.0
4/20 02:10	103.9	↑1.8
4/20 02:20	105.7	↑1.8
4/20 02:30	107.2	↑1.5
4/20 02:40	108.6	↑1.4
4/20 02:50	109.8	↑1.2
4/20 03:00	110.9	↑1.1
4/20 03:10	111.7	↑0.8
4/20 03:20	112.3	↑0.6
4/20 03:30	112.6	↑0.3
4/20 03:40	112.8	↑0.2	満潮
4/20 03:50	112.7	↓-0.1
4/20 04:00	112.4	↓-0.3
4/20 04:10	111.8	↓-0.6
4/20 04:20	111.0	↓-0.8
4/20 04:30	110.0	↓-1.0
4/20 04:40	108.7	↓-1.3
4/20 04:50	107.2	↓-1.5
4/20 05:00	105.5	↓-1.7
4/20 05:10	103.6	↓-1.9
4/20 05:20	101.4	↓-2.2
4/20 05:30	99.0	↓-2.4
4/20 05:40	96.5	↓-2.5
4/20 05:50	93.7	↓-2.8
4/20 06:00	90.8	↓-2.9
4/20 06:10	87.8	↓-3.0
4/20 06:20	84.6	↓-3.2
4/20 06:30	81.3	↓-3.3
4/20 06:40	77.8	↓-3.5
4/20 06:50	74.3	↓-3.5
4/20 07:00	70.7	↓-3.6
4/20 07:10	67.0	↓-3.7
4/20 07:20	63.4	↓-3.6
4/20 07:30	59.6	↓-3.8	最大潮位差
4/20 07:40	55.9	↓-3.7
4/20 07:50	52.2	↓-3.7
4/20 08:00	48.5	↓-3.7
4/20 08:10	44.9	↓-3.6
4/20 08:20	41.4	↓-3.5
4/20 08:30	37.9	↓-3.5
4/20 08:40	34.5	↓-3.4
4/20 08:50	31.3	↓-3.2
4/20 09:00	28.2	↓-3.1
4/20 09:10	25.2	↓-3.0
4/20 09:20	22.4	↓-2.8
4/20 09:30	19.7	↓-2.7
4/20 09:40	17.3	↓-2.4
4/20 09:50	15.0	↓-2.3
4/20 10:00	12.9	↓-2.1
4/20 10:10	11.0	↓-1.9
4/20 10:20	9.4	↓-1.6
4/20 10:30	7.9	↓-1.5
4/20 10:40	6.7	↓-1.2
4/20 10:50	5.7	↓-1.0
4/20 11:00	4.9	↓-0.8
4/20 11:10	4.3	↓-0.6
4/20 11:20	4.0	↓-0.3
4/20 11:30	3.8	↓-0.2	干潮
4/20 11:40	3.9	↑0.1
4/20 11:50	4.1	↑0.2
4/20 12:00	4.6	↑0.5
4/20 12:10	5.2	↑0.6
4/20 12:20	6.1	↑0.9
4/20 12:30	7.0	↑0.9
4/20 12:40	8.2	↑1.2
4/20 12:50	9.4	↑1.2
4/20 13:00	10.9	↑1.5
4/20 13:10	12.4	↑1.5
4/20 13:20	14.0	↑1.6
4/20 13:30	15.7	↑1.7
4/20 13:40	17.5	↑1.8
4/20 13:50	19.3	↑1.8
4/20 14:00	21.2	↑1.9
4/20 14:10	23.1	↑1.9
4/20 14:20	25.1	↑2.0
4/20 14:30	27.0	↑1.9
4/20 14:40	28.9	↑1.9
4/20 14:50	30.8	↑1.9
4/20 15:00	32.7	↑1.9
4/20 15:10	34.5	↑1.8
4/20 15:20	36.2	↑1.7
4/20 15:30	37.9	↑1.7
4/20 15:40	39.5	↑1.6
4/20 15:50	41.0	↑1.5
4/20 16:00	42.4	↑1.4
4/20 16:10	43.7	↑1.3
4/20 16:20	44.9	↑1.2
4/20 16:30	46.0	↑1.1
4/20 16:40	47.0	↑1.0
4/20 16:50	47.9	↑0.9
4/20 17:00	48.6	↑0.7
4/20 17:10	49.2	↑0.6
4/20 17:20	49.8	↑0.6
4/20 17:30	50.2	↑0.4
4/20 17:40	50.5	↑0.3
4/20 17:50	50.7	↑0.2
4/20 18:00	50.8	↑0.1	満潮
4/20 18:10	50.8	0
4/20 18:20	50.7	↓-0.1
4/20 18:30	50.6	↓-0.1
4/20 18:40	50.3	↓-0.3
4/20 18:50	50.1	↓-0.2
4/20 19:00	49.8	↓-0.3
4/20 19:10	49.4	↓-0.4
4/20 19:20	49.1	↓-0.3
4/20 19:30	48.7	↓-0.4
4/20 19:40	48.3	↓-0.4
4/20 19:50	47.9	↓-0.4
4/20 20:00	47.6	↓-0.3
4/20 20:10	47.3	↓-0.3
4/20 20:20	47.0	↓-0.3
4/20 20:30	46.8	↓-0.2
4/20 20:40	46.7	↓-0.1
4/20 20:50	46.7	0	干潮
4/20 21:00	46.7	0
4/20 21:10	46.8	↑0.1
4/20 21:20	47.1	↑0.3
4/20 21:30	47.4	↑0.3
4/20 21:40	47.9	↑0.5
4/20 21:50	48.5	↑0.6
4/20 22:00	49.2	↑0.7
4/20 22:10	50.1	↑0.9
4/20 22:20	51.1	↑1.0
4/20 22:30	52.2	↑1.1
4/20 22:40	53.5	↑1.3
4/20 22:50	54.8	↑1.3
4/20 23:00	56.4	↑1.6
4/20 23:10	58.0	↑1.6
4/20 23:20	59.8	↑1.8
4/20 23:30	61.7	↑1.9
4/20 23:40	63.6	↑1.9
4/20 23:50	65.7	↑2.1