20 (日)	20:09	03:34	-	-
	94cm	37cm	-	-
小潮 出 05:42 入 16:31 出 23:09 入 12:44

コイセボイ（北海道）2030年10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
10/20 00:00	58.3	↓-1.9	最大潮位差
10/20 00:10	56.5	↓-1.8
10/20 00:20	54.7	↓-1.8
10/20 00:30	52.9	↓-1.8
10/20 00:40	51.3	↓-1.6
10/20 00:50	49.7	↓-1.6
10/20 01:00	48.2	↓-1.5
10/20 01:10	46.8	↓-1.4
10/20 01:20	45.4	↓-1.4
10/20 01:30	44.2	↓-1.2
10/20 01:40	43.1	↓-1.1
10/20 01:50	42.0	↓-1.1
10/20 02:00	41.0	↓-1.0
10/20 02:10	40.2	↓-0.8
10/20 02:20	39.4	↓-0.8
10/20 02:30	38.8	↓-0.6
10/20 02:40	38.2	↓-0.6
10/20 02:50	37.8	↓-0.4
10/20 03:00	37.4	↓-0.4
10/20 03:10	37.2	↓-0.2
10/20 03:20	37.0	↓-0.2
10/20 03:30	37.0	0	干潮
10/20 03:40	37.0	0
10/20 03:50	37.1	↑0.1
10/20 04:00	37.3	↑0.2
10/20 04:10	37.5	↑0.2
10/20 04:20	37.9	↑0.4
10/20 04:30	38.2	↑0.3
10/20 04:40	38.7	↑0.5
10/20 04:50	39.2	↑0.5
10/20 05:00	39.8	↑0.6
10/20 05:10	40.4	↑0.6
10/20 05:20	41.0	↑0.6
10/20 05:30	41.7	↑0.7
10/20 05:40	42.4	↑0.7
10/20 05:50	43.2	↑0.8
10/20 06:00	43.9	↑0.7
10/20 06:10	44.7	↑0.8
10/20 06:20	45.5	↑0.8
10/20 06:30	46.2	↑0.7
10/20 06:40	47.0	↑0.8
10/20 06:50	47.8	↑0.8
10/20 07:00	48.5	↑0.7
10/20 07:10	49.2	↑0.7
10/20 07:20	49.9	↑0.7
10/20 07:30	50.6	↑0.7
10/20 07:40	51.3	↑0.7
10/20 07:50	51.9	↑0.6
10/20 08:00	52.5	↑0.6
10/20 08:10	53.1	↑0.6
10/20 08:20	53.6	↑0.5
10/20 08:30	54.1	↑0.5
10/20 08:40	54.6	↑0.5
10/20 08:50	55.0	↑0.4
10/20 09:00	55.5	↑0.5
10/20 09:10	55.8	↑0.3
10/20 09:20	56.2	↑0.4
10/20 09:30	56.5	↑0.3
10/20 09:40	56.7	↑0.2
10/20 09:50	57.0	↑0.3
10/20 10:00	57.2	↑0.2
10/20 10:10	57.4	↑0.2
10/20 10:20	57.6	↑0.2
10/20 10:30	57.7	↑0.1
10/20 10:40	57.9	↑0.2
10/20 10:50	58.0	↑0.1
10/20 11:00	58.2	↑0.2
10/20 11:10	58.3	↑0.1
10/20 11:20	58.5	↑0.2
10/20 11:30	58.6	↑0.1
10/20 11:40	58.7	↑0.1
10/20 11:50	58.9	↑0.2
10/20 12:00	59.1	↑0.2
10/20 12:10	59.3	↑0.2
10/20 12:20	59.5	↑0.2
10/20 12:30	59.8	↑0.3
10/20 12:40	60.1	↑0.3
10/20 12:50	60.4	↑0.3
10/20 13:00	60.8	↑0.4
10/20 13:10	61.2	↑0.4
10/20 13:20	61.6	↑0.4
10/20 13:30	62.1	↑0.5
10/20 13:40	62.6	↑0.5
10/20 13:50	63.2	↑0.6
10/20 14:00	63.8	↑0.6
10/20 14:10	64.4	↑0.6
10/20 14:20	65.1	↑0.7
10/20 14:30	65.9	↑0.8
10/20 14:40	66.7	↑0.8
10/20 14:50	67.5	↑0.8
10/20 15:00	68.4	↑0.9
10/20 15:10	69.3	↑0.9
10/20 15:20	70.2	↑0.9
10/20 15:30	71.2	↑1.0
10/20 15:40	72.2	↑1.0
10/20 15:50	73.3	↑1.1
10/20 16:00	74.3	↑1.0
10/20 16:10	75.4	↑1.1
10/20 16:20	76.5	↑1.1
10/20 16:30	77.6	↑1.1
10/20 16:40	78.7	↑1.1
10/20 16:50	79.8	↑1.1
10/20 17:00	80.9	↑1.1
10/20 17:10	82.0	↑1.1
10/20 17:20	83.1	↑1.1
10/20 17:30	84.1	↑1.0
10/20 17:40	85.1	↑1.0
10/20 17:50	86.1	↑1.0
10/20 18:00	87.1	↑1.0
10/20 18:10	88.0	↑0.9
10/20 18:20	88.8	↑0.8
10/20 18:30	89.6	↑0.8
10/20 18:40	90.4	↑0.8
10/20 18:50	91.0	↑0.6
10/20 19:00	91.6	↑0.6
10/20 19:10	92.2	↑0.6
10/20 19:20	92.6	↑0.4
10/20 19:30	93.0	↑0.4
10/20 19:40	93.3	↑0.3
10/20 19:50	93.5	↑0.2
10/20 20:00	93.6	↑0.1	満潮
10/20 20:10	93.7	↑0.1
10/20 20:20	93.6	↓-0.1
10/20 20:30	93.4	↓-0.2
10/20 20:40	93.2	↓-0.2
10/20 20:50	92.8	↓-0.4
10/20 21:00	92.4	↓-0.4
10/20 21:10	91.9	↓-0.5
10/20 21:20	91.2	↓-0.7
10/20 21:30	90.5	↓-0.7
10/20 21:40	89.7	↓-0.8
10/20 21:50	88.8	↓-0.9
10/20 22:00	87.8	↓-1.0
10/20 22:10	86.8	↓-1.0
10/20 22:20	85.6	↓-1.2
10/20 22:30	84.4	↓-1.2
10/20 22:40	83.1	↓-1.3
10/20 22:50	81.8	↓-1.3
10/20 23:00	80.4	↓-1.4
10/20 23:10	79.0	↓-1.4
10/20 23:20	77.5	↓-1.5
10/20 23:30	75.9	↓-1.6
10/20 23:40	74.4	↓-1.5
10/20 23:50	72.8	↓-1.6