20 (金)	07:21	17:07	-	-
	96cm	23cm	-	-
長潮 出 04:30 入 18:12 出 10:29 入 01:28 潮干狩り ○ 16:00～18:12

コイセボイ（北海道）2040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	49.9	↑0.8
4/20 00:10	50.7	↑0.8
4/20 00:20	51.6	↑0.9
4/20 00:30	52.5	↑0.9
4/20 00:40	53.4	↑0.9
4/20 00:50	54.3	↑0.9
4/20 01:00	55.3	↑1.0
4/20 01:10	56.4	↑1.1
4/20 01:20	57.5	↑1.1
4/20 01:30	58.6	↑1.1
4/20 01:40	59.8	↑1.2
4/20 01:50	60.9	↑1.1
4/20 02:00	62.2	↑1.3
4/20 02:10	63.4	↑1.2
4/20 02:20	64.7	↑1.3
4/20 02:30	66.0	↑1.3
4/20 02:40	67.4	↑1.4
4/20 02:50	68.8	↑1.4
4/20 03:00	70.1	↑1.3
4/20 03:10	71.5	↑1.4
4/20 03:20	72.9	↑1.4
4/20 03:30	74.3	↑1.4
4/20 03:40	75.7	↑1.4
4/20 03:50	77.1	↑1.4
4/20 04:00	78.5	↑1.4
4/20 04:10	79.8	↑1.3
4/20 04:20	81.2	↑1.4
4/20 04:30	82.5	↑1.3
4/20 04:40	83.8	↑1.3
4/20 04:50	85.0	↑1.2
4/20 05:00	86.2	↑1.2
4/20 05:10	87.3	↑1.1
4/20 05:20	88.4	↑1.1
4/20 05:30	89.4	↑1.0
4/20 05:40	90.4	↑1.0
4/20 05:50	91.3	↑0.9
4/20 06:00	92.1	↑0.8
4/20 06:10	92.8	↑0.7
4/20 06:20	93.4	↑0.6
4/20 06:30	94.0	↑0.6
4/20 06:40	94.4	↑0.4
4/20 06:50	94.8	↑0.4
4/20 07:00	95.1	↑0.3
4/20 07:10	95.2	↑0.1
4/20 07:20	95.3	↑0.1	満潮
4/20 07:30	95.2	↓-0.1
4/20 07:40	95.1	↓-0.1
4/20 07:50	94.8	↓-0.3
4/20 08:00	94.4	↓-0.4
4/20 08:10	93.9	↓-0.5
4/20 08:20	93.4	↓-0.5
4/20 08:30	92.7	↓-0.7
4/20 08:40	91.9	↓-0.8
4/20 08:50	91.0	↓-0.9
4/20 09:00	90.0	↓-1.0
4/20 09:10	88.9	↓-1.1
4/20 09:20	87.7	↓-1.2
4/20 09:30	86.4	↓-1.3
4/20 09:40	85.0	↓-1.4
4/20 09:50	83.6	↓-1.4
4/20 10:00	82.0	↓-1.6
4/20 10:10	80.4	↓-1.6
4/20 10:20	78.7	↓-1.7
4/20 10:30	77.0	↓-1.7
4/20 10:40	75.2	↓-1.8
4/20 10:50	73.4	↓-1.8
4/20 11:00	71.5	↓-1.9
4/20 11:10	69.6	↓-1.9
4/20 11:20	67.6	↓-2.0	最大潮位差
4/20 11:30	65.6	↓-2.0	最大潮位差
4/20 11:40	63.6	↓-2.0	最大潮位差
4/20 11:50	61.6	↓-2.0	最大潮位差
4/20 12:00	59.6	↓-2.0	最大潮位差
4/20 12:10	57.6	↓-2.0	最大潮位差
4/20 12:20	55.6	↓-2.0	最大潮位差
4/20 12:30	53.6	↓-2.0	最大潮位差
4/20 12:40	51.6	↓-2.0	最大潮位差
4/20 12:50	49.7	↓-1.9
4/20 13:00	47.8	↓-1.9
4/20 13:10	45.9	↓-1.9
4/20 13:20	44.1	↓-1.8
4/20 13:30	42.3	↓-1.8
4/20 13:40	40.6	↓-1.7
4/20 13:50	38.9	↓-1.7
4/20 14:00	37.4	↓-1.5
4/20 14:10	35.8	↓-1.6
4/20 14:20	34.4	↓-1.4
4/20 14:30	33.0	↓-1.4
4/20 14:40	31.7	↓-1.3
4/20 14:50	30.5	↓-1.2
4/20 15:00	29.4	↓-1.1
4/20 15:10	28.3	↓-1.1
4/20 15:20	27.4	↓-0.9
4/20 15:30	26.5	↓-0.9
4/20 15:40	25.7	↓-0.8
4/20 15:50	25.0	↓-0.7
4/20 16:00	24.4	↓-0.6
4/20 16:10	23.9	↓-0.5
4/20 16:20	23.5	↓-0.4
4/20 16:30	23.1	↓-0.4
4/20 16:40	22.9	↓-0.2
4/20 16:50	22.7	↓-0.2
4/20 17:00	22.6	↓-0.1	干潮
4/20 17:10	22.6	0
4/20 17:20	22.7	↑0.1
4/20 17:30	22.8	↑0.1
4/20 17:40	23.0	↑0.2
4/20 17:50	23.3	↑0.3
4/20 18:00	23.7	↑0.4
4/20 18:10	24.1	↑0.4
4/20 18:20	24.5	↑0.4
4/20 18:30	25.0	↑0.5
4/20 18:40	25.6	↑0.6
4/20 18:50	26.2	↑0.6
4/20 19:00	26.8	↑0.6
4/20 19:10	27.5	↑0.7
4/20 19:20	28.2	↑0.7
4/20 19:30	29.0	↑0.8
4/20 19:40	29.7	↑0.7
4/20 19:50	30.5	↑0.8
4/20 20:00	31.3	↑0.8
4/20 20:10	32.1	↑0.8
4/20 20:20	32.9	↑0.8
4/20 20:30	33.8	↑0.9
4/20 20:40	34.6	↑0.8
4/20 20:50	35.5	↑0.9
4/20 21:00	36.3	↑0.8
4/20 21:10	37.1	↑0.8
4/20 21:20	38.0	↑0.9
4/20 21:30	38.8	↑0.8
4/20 21:40	39.6	↑0.8
4/20 21:50	40.4	↑0.8
4/20 22:00	41.2	↑0.8
4/20 22:10	42.0	↑0.8
4/20 22:20	42.8	↑0.8
4/20 22:30	43.5	↑0.7
4/20 22:40	44.3	↑0.8
4/20 22:50	45.0	↑0.7
4/20 23:00	45.7	↑0.7
4/20 23:10	46.4	↑0.7
4/20 23:20	47.1	↑0.7
4/20 23:30	47.8	↑0.7
4/20 23:40	48.4	↑0.6
4/20 23:50	49.1	↑0.7