20 (火)	03:31	07:05	14:10	22:59
	71cm	65cm	98cm	37cm
小潮 出 05:42 入 18:53 出 11:20 入 01:17

八幡（福岡）2021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	52.0	↑1.4
4/20 00:10	53.4	↑1.4
4/20 00:20	54.8	↑1.4
4/20 00:30	56.2	↑1.4
4/20 00:40	57.6	↑1.4
4/20 00:50	58.9	↑1.3
4/20 01:00	60.2	↑1.3
4/20 01:10	61.5	↑1.3
4/20 01:20	62.7	↑1.2
4/20 01:30	63.8	↑1.1
4/20 01:40	64.9	↑1.1
4/20 01:50	65.9	↑1.0
4/20 02:00	66.8	↑0.9
4/20 02:10	67.7	↑0.9
4/20 02:20	68.4	↑0.7
4/20 02:30	69.1	↑0.7
4/20 02:40	69.6	↑0.5
4/20 02:50	70.1	↑0.5
4/20 03:00	70.4	↑0.3
4/20 03:10	70.6	↑0.2
4/20 03:20	70.8	↑0.2
4/20 03:30	70.8	0	満潮
4/20 03:40	70.8	0
4/20 03:50	70.6	↓-0.2
4/20 04:00	70.4	↓-0.2
4/20 04:10	70.2	↓-0.2
4/20 04:20	69.8	↓-0.4
4/20 04:30	69.4	↓-0.4
4/20 04:40	69.0	↓-0.4
4/20 04:50	68.6	↓-0.4
4/20 05:00	68.1	↓-0.5
4/20 05:10	67.7	↓-0.4
4/20 05:20	67.2	↓-0.5
4/20 05:30	66.8	↓-0.4
4/20 05:40	66.3	↓-0.5
4/20 05:50	66.0	↓-0.3
4/20 06:00	65.6	↓-0.4
4/20 06:10	65.3	↓-0.3
4/20 06:20	65.1	↓-0.2
4/20 06:30	64.9	↓-0.2
4/20 06:40	64.7	↓-0.2
4/20 06:50	64.6	↓-0.1
4/20 07:00	64.5	↓-0.1	干潮
4/20 07:10	64.6	↑0.1
4/20 07:20	64.6	0
4/20 07:30	64.7	↑0.1
4/20 07:40	64.9	↑0.2
4/20 07:50	65.2	↑0.3
4/20 08:00	65.5	↑0.3
4/20 08:10	65.8	↑0.3
4/20 08:20	66.2	↑0.4
4/20 08:30	66.7	↑0.5
4/20 08:40	67.3	↑0.6
4/20 08:50	67.9	↑0.6
4/20 09:00	68.6	↑0.7
4/20 09:10	69.4	↑0.8
4/20 09:20	70.3	↑0.9
4/20 09:30	71.2	↑0.9
4/20 09:40	72.2	↑1.0
4/20 09:50	73.2	↑1.0
4/20 10:00	74.3	↑1.1
4/20 10:10	75.5	↑1.2
4/20 10:20	76.7	↑1.2
4/20 10:30	77.9	↑1.2
4/20 10:40	79.2	↑1.3
4/20 10:50	80.5	↑1.3
4/20 11:00	81.8	↑1.3
4/20 11:10	83.1	↑1.3
4/20 11:20	84.4	↑1.3
4/20 11:30	85.6	↑1.2
4/20 11:40	86.9	↑1.3
4/20 11:50	88.1	↑1.2
4/20 12:00	89.2	↑1.1
4/20 12:10	90.3	↑1.1
4/20 12:20	91.3	↑1.0
4/20 12:30	92.3	↑1.0
4/20 12:40	93.2	↑0.9
4/20 12:50	94.0	↑0.8
4/20 13:00	94.7	↑0.7
4/20 13:10	95.3	↑0.6
4/20 13:20	95.8	↑0.5
4/20 13:30	96.3	↑0.5
4/20 13:40	96.6	↑0.3
4/20 13:50	96.9	↑0.3
4/20 14:00	97.0	↑0.1	満潮
4/20 14:10	97.1	↑0.1	満潮
4/20 14:20	97.0	↓-0.1
4/20 14:30	96.8	↓-0.2
4/20 14:40	96.6	↓-0.2
4/20 14:50	96.2	↓-0.4
4/20 15:00	95.7	↓-0.5
4/20 15:10	95.1	↓-0.6
4/20 15:20	94.5	↓-0.6
4/20 15:30	93.7	↓-0.8
4/20 15:40	92.8	↓-0.9
4/20 15:50	91.9	↓-0.9
4/20 16:00	90.8	↓-1.1
4/20 16:10	89.7	↓-1.1
4/20 16:20	88.5	↓-1.2
4/20 16:30	87.3	↓-1.2
4/20 16:40	86.0	↓-1.3
4/20 16:50	84.6	↓-1.4
4/20 17:00	83.2	↓-1.4
4/20 17:10	81.7	↓-1.5
4/20 17:20	80.2	↓-1.5
4/20 17:30	78.7	↓-1.5
4/20 17:40	77.1	↓-1.6
4/20 17:50	75.5	↓-1.6
4/20 18:00	73.9	↓-1.6
4/20 18:10	72.3	↓-1.6
4/20 18:20	70.7	↓-1.6
4/20 18:30	69.1	↓-1.6
4/20 18:40	67.4	↓-1.7	最大潮位差
4/20 18:50	65.7	↓-1.7	最大潮位差
4/20 19:00	64.1	↓-1.6
4/20 19:10	62.4	↓-1.7	最大潮位差
4/20 19:20	60.7	↓-1.7	最大潮位差
4/20 19:30	59.0	↓-1.7	最大潮位差
4/20 19:40	57.4	↓-1.6
4/20 19:50	55.7	↓-1.7	最大潮位差
4/20 20:00	54.1	↓-1.6
4/20 20:10	52.5	↓-1.6
4/20 20:20	50.9	↓-1.6
4/20 20:30	49.3	↓-1.6
4/20 20:40	47.8	↓-1.5
4/20 20:50	46.4	↓-1.4
4/20 21:00	45.1	↓-1.3
4/20 21:10	43.8	↓-1.3
4/20 21:20	42.6	↓-1.2
4/20 21:30	41.5	↓-1.1
4/20 21:40	40.5	↓-1.0
4/20 21:50	39.6	↓-0.9
4/20 22:00	38.8	↓-0.8
4/20 22:10	38.2	↓-0.6
4/20 22:20	37.7	↓-0.5
4/20 22:30	37.3	↓-0.4
4/20 22:40	37.0	↓-0.3
4/20 22:50	36.8	↓-0.2	干潮
4/20 23:00	36.8	0
4/20 23:10	36.9	↑0.1
4/20 23:20	37.1	↑0.2
4/20 23:30	37.4	↑0.3
4/20 23:40	37.8	↑0.4
4/20 23:50	38.4	↑0.6