21 (火)	08:24	02:06	18:51	10:38
	57cm	33cm	108cm	56cm
小潮 出 05:07 入 17:22 出 21:33 入 12:17

コイセボイ（北海道）2038年09月21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
9/21 00:00	43.2	↓-1.8
9/21 00:10	41.7	↓-1.5
9/21 00:20	40.2	↓-1.5
9/21 00:30	38.8	↓-1.4
9/21 00:40	37.6	↓-1.2
9/21 00:50	36.6	↓-1.0
9/21 01:00	35.6	↓-1.0
9/21 01:10	34.9	↓-0.7
9/21 01:20	34.2	↓-0.7
9/21 01:30	33.7	↓-0.5
9/21 01:40	33.3	↓-0.4
9/21 01:50	33.0	↓-0.3
9/21 02:00	32.9	↓-0.1	干潮
9/21 02:10	32.9	0
9/21 02:20	33.0	↑0.1
9/21 02:30	33.3	↑0.3
9/21 02:40	33.6	↑0.3
9/21 02:50	34.0	↑0.4
9/21 03:00	34.6	↑0.6
9/21 03:10	35.2	↑0.6
9/21 03:20	35.9	↑0.7
9/21 03:30	36.7	↑0.8
9/21 03:40	37.5	↑0.8
9/21 03:50	38.4	↑0.9
9/21 04:00	39.3	↑0.9
9/21 04:10	40.3	↑1.0
9/21 04:20	41.3	↑1.0
9/21 04:30	42.3	↑1.0
9/21 04:40	43.3	↑1.0
9/21 04:50	44.3	↑1.0
9/21 05:00	45.3	↑1.0
9/21 05:10	46.3	↑1.0
9/21 05:20	47.3	↑1.0
9/21 05:30	48.3	↑1.0
9/21 05:40	49.2	↑0.9
9/21 05:50	50.1	↑0.9
9/21 06:00	50.9	↑0.8
9/21 06:10	51.7	↑0.8
9/21 06:20	52.4	↑0.7
9/21 06:30	53.1	↑0.7
9/21 06:40	53.7	↑0.6
9/21 06:50	54.3	↑0.6
9/21 07:00	54.7	↑0.4
9/21 07:10	55.2	↑0.5
9/21 07:20	55.5	↑0.3
9/21 07:30	55.8	↑0.3
9/21 07:40	56.1	↑0.3
9/21 07:50	56.3	↑0.2
9/21 08:00	56.4	↑0.1
9/21 08:10	56.5	↑0.1
9/21 08:20	56.5	0	満潮
9/21 08:30	56.5	0
9/21 08:40	56.5	0
9/21 08:50	56.4	↓-0.1
9/21 09:00	56.3	↓-0.1
9/21 09:10	56.2	↓-0.1
9/21 09:20	56.0	↓-0.2
9/21 09:30	55.9	↓-0.1
9/21 09:40	55.7	↓-0.2
9/21 09:50	55.6	↓-0.1
9/21 10:00	55.5	↓-0.1
9/21 10:10	55.4	↓-0.1
9/21 10:20	55.3	↓-0.1
9/21 10:30	55.2	↓-0.1	干潮
9/21 10:40	55.2	0
9/21 10:50	55.3	↑0.1
9/21 11:00	55.4	↑0.1
9/21 11:10	55.5	↑0.1
9/21 11:20	55.7	↑0.2
9/21 11:30	56.0	↑0.3
9/21 11:40	56.3	↑0.3
9/21 11:50	56.8	↑0.5
9/21 12:00	57.3	↑0.5
9/21 12:10	57.9	↑0.6
9/21 12:20	58.5	↑0.6
9/21 12:30	59.3	↑0.8
9/21 12:40	60.1	↑0.8
9/21 12:50	61.1	↑1.0
9/21 13:00	62.1	↑1.0
9/21 13:10	63.2	↑1.1
9/21 13:20	64.4	↑1.2
9/21 13:30	65.6	↑1.2
9/21 13:40	67.0	↑1.4
9/21 13:50	68.4	↑1.4
9/21 14:00	69.8	↑1.4
9/21 14:10	71.3	↑1.5
9/21 14:20	72.9	↑1.6
9/21 14:30	74.6	↑1.7
9/21 14:40	76.2	↑1.6
9/21 14:50	77.9	↑1.7
9/21 15:00	79.7	↑1.8
9/21 15:10	81.4	↑1.7
9/21 15:20	83.2	↑1.8
9/21 15:30	85.0	↑1.8
9/21 15:40	86.7	↑1.7
9/21 15:50	88.4	↑1.7
9/21 16:00	90.2	↑1.8
9/21 16:10	91.8	↑1.6
9/21 16:20	93.5	↑1.7
9/21 16:30	95.0	↑1.5
9/21 16:40	96.5	↑1.5
9/21 16:50	98.0	↑1.5
9/21 17:00	99.4	↑1.4
9/21 17:10	100.6	↑1.2
9/21 17:20	101.8	↑1.2
9/21 17:30	102.9	↑1.1
9/21 17:40	103.9	↑1.0
9/21 17:50	104.7	↑0.8
9/21 18:00	105.5	↑0.8
9/21 18:10	106.1	↑0.6
9/21 18:20	106.6	↑0.5
9/21 18:30	106.9	↑0.3
9/21 18:40	107.1	↑0.2
9/21 18:50	107.2	↑0.1	満潮
9/21 19:00	107.1	↓-0.1
9/21 19:10	106.9	↓-0.2
9/21 19:20	106.5	↓-0.4
9/21 19:30	106.0	↓-0.5
9/21 19:40	105.4	↓-0.6
9/21 19:50	104.6	↓-0.8
9/21 20:00	103.7	↓-0.9
9/21 20:10	102.7	↓-1.0
9/21 20:20	101.5	↓-1.2
9/21 20:30	100.2	↓-1.3
9/21 20:40	98.8	↓-1.4
9/21 20:50	97.3	↓-1.5
9/21 21:00	95.7	↓-1.6
9/21 21:10	94.0	↓-1.7
9/21 21:20	92.2	↓-1.8
9/21 21:30	90.3	↓-1.9
9/21 21:40	88.3	↓-2.0
9/21 21:50	86.3	↓-2.0
9/21 22:00	84.2	↓-2.1
9/21 22:10	82.0	↓-2.2
9/21 22:20	79.8	↓-2.2
9/21 22:30	77.6	↓-2.2
9/21 22:40	75.4	↓-2.2
9/21 22:50	73.2	↓-2.2
9/21 23:00	70.9	↓-2.3	最大潮位差
9/21 23:10	68.7	↓-2.2
9/21 23:20	66.5	↓-2.2
9/21 23:30	64.3	↓-2.2
9/21 23:40	62.1	↓-2.2
9/21 23:50	60.0	↓-2.1