20 (土)	05:07	10:09	16:29	23:38
	81cm	52cm	109cm	26cm
中潮 出 05:05 入 17:25 出 08:37 入 18:52

コイセボイ（北海道）2031年09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
9/20 00:00	29.6	↑1.3
9/20 00:10	31.0	↑1.4
9/20 00:20	32.7	↑1.7
9/20 00:30	34.4	↑1.7
9/20 00:40	36.3	↑1.9
9/20 00:50	38.3	↑2.0
9/20 01:00	40.4	↑2.1
9/20 01:10	42.6	↑2.2
9/20 01:20	44.9	↑2.3
9/20 01:30	47.2	↑2.3
9/20 01:40	49.5	↑2.3
9/20 01:50	51.9	↑2.4
9/20 02:00	54.2	↑2.3
9/20 02:10	56.5	↑2.3
9/20 02:20	58.8	↑2.3
9/20 02:30	61.1	↑2.3
9/20 02:40	63.3	↑2.2
9/20 02:50	65.4	↑2.1
9/20 03:00	67.4	↑2.0
9/20 03:10	69.3	↑1.9
9/20 03:20	71.1	↑1.8
9/20 03:30	72.7	↑1.6
9/20 03:40	74.2	↑1.5
9/20 03:50	75.6	↑1.4
9/20 04:00	76.8	↑1.2
9/20 04:10	77.8	↑1.0
9/20 04:20	78.7	↑0.9
9/20 04:30	79.4	↑0.7
9/20 04:40	80.0	↑0.6
9/20 04:50	80.3	↑0.3
9/20 05:00	80.5	↑0.2	満潮
9/20 05:10	80.5	0
9/20 05:20	80.4	↓-0.1
9/20 05:30	80.1	↓-0.3
9/20 05:40	79.6	↓-0.5
9/20 05:50	79.0	↓-0.6
9/20 06:00	78.2	↓-0.8
9/20 06:10	77.4	↓-0.8
9/20 06:20	76.3	↓-1.1
9/20 06:30	75.2	↓-1.1
9/20 06:40	74.0	↓-1.2
9/20 06:50	72.7	↓-1.3
9/20 07:00	71.3	↓-1.4
9/20 07:10	69.9	↓-1.4
9/20 07:20	68.4	↓-1.5
9/20 07:30	67.0	↓-1.4
9/20 07:40	65.5	↓-1.5
9/20 07:50	64.0	↓-1.5
9/20 08:00	62.5	↓-1.5
9/20 08:10	61.0	↓-1.5
9/20 08:20	59.6	↓-1.4
9/20 08:30	58.3	↓-1.3
9/20 08:40	57.1	↓-1.2
9/20 08:50	55.9	↓-1.2
9/20 09:00	54.8	↓-1.1
9/20 09:10	53.9	↓-0.9
9/20 09:20	53.1	↓-0.8
9/20 09:30	52.4	↓-0.7
9/20 09:40	51.9	↓-0.5
9/20 09:50	51.5	↓-0.4
9/20 10:00	51.3	↓-0.2	干潮
9/20 10:10	51.3	0
9/20 10:20	51.4	↑0.1
9/20 10:30	51.7	↑0.3
9/20 10:40	52.2	↑0.5
9/20 10:50	52.8	↑0.6
9/20 11:00	53.6	↑0.8
9/20 11:10	54.6	↑1.0
9/20 11:20	55.7	↑1.1
9/20 11:30	57.0	↑1.3
9/20 11:40	58.5	↑1.5
9/20 11:50	60.1	↑1.6
9/20 12:00	61.8	↑1.7
9/20 12:10	63.7	↑1.9
9/20 12:20	65.7	↑2.0
9/20 12:30	67.8	↑2.1
9/20 12:40	69.9	↑2.1
9/20 12:50	72.2	↑2.3
9/20 13:00	74.4	↑2.2
9/20 13:10	76.8	↑2.4
9/20 13:20	79.1	↑2.3
9/20 13:30	81.5	↑2.4
9/20 13:40	83.9	↑2.4
9/20 13:50	86.2	↑2.3
9/20 14:00	88.5	↑2.3
9/20 14:10	90.8	↑2.3
9/20 14:20	93.0	↑2.2
9/20 14:30	95.1	↑2.1
9/20 14:40	97.0	↑1.9
9/20 14:50	98.9	↑1.9
9/20 15:00	100.6	↑1.7
9/20 15:10	102.2	↑1.6
9/20 15:20	103.7	↑1.5
9/20 15:30	104.9	↑1.2
9/20 15:40	106.0	↑1.1
9/20 15:50	106.9	↑0.9
9/20 16:00	107.6	↑0.7
9/20 16:10	108.0	↑0.4
9/20 16:20	108.3	↑0.3	満潮
9/20 16:30	108.4	↑0.1
9/20 16:40	108.2	↓-0.2
9/20 16:50	107.8	↓-0.4
9/20 17:00	107.2	↓-0.6
9/20 17:10	106.4	↓-0.8
9/20 17:20	105.4	↓-1.0
9/20 17:30	104.1	↓-1.3
9/20 17:40	102.7	↓-1.4
9/20 17:50	101.0	↓-1.7
9/20 18:00	99.2	↓-1.8
9/20 18:10	97.2	↓-2.0
9/20 18:20	95.0	↓-2.2
9/20 18:30	92.6	↓-2.4
9/20 18:40	90.2	↓-2.4
9/20 18:50	87.5	↓-2.7
9/20 19:00	84.8	↓-2.7
9/20 19:10	82.0	↓-2.8
9/20 19:20	79.0	↓-3.0
9/20 19:30	76.1	↓-2.9
9/20 19:40	73.0	↓-3.1	最大潮位差
9/20 19:50	69.9	↓-3.1	最大潮位差
9/20 20:00	66.9	↓-3.0
9/20 20:10	63.8	↓-3.1	最大潮位差
9/20 20:20	60.7	↓-3.1	最大潮位差
9/20 20:30	57.7	↓-3.0
9/20 20:40	54.7	↓-3.0
9/20 20:50	51.8	↓-2.9
9/20 21:00	49.0	↓-2.8
9/20 21:10	46.2	↓-2.8
9/20 21:20	43.6	↓-2.6
9/20 21:30	41.2	↓-2.4
9/20 21:40	38.8	↓-2.4
9/20 21:50	36.7	↓-2.1
9/20 22:00	34.6	↓-2.1
9/20 22:10	32.8	↓-1.8
9/20 22:20	31.2	↓-1.6
9/20 22:30	29.7	↓-1.5
9/20 22:40	28.4	↓-1.3
9/20 22:50	27.4	↓-1.0
9/20 23:00	26.5	↓-0.9
9/20 23:10	25.9	↓-0.6
9/20 23:20	25.4	↓-0.5
9/20 23:30	25.2	↓-0.2	干潮
9/20 23:40	25.2	0
9/20 23:50	25.3	↑0.1