20 (月)	01:59	06:33	13:13	21:10
	81cm	56cm	106cm	38cm
小潮 出 05:41 入 18:53 出 10:32 入 00:10

八幡（福岡）2048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	68.6	↑1.8
4/20 00:10	70.3	↑1.7
4/20 00:20	71.9	↑1.6
4/20 00:30	73.4	↑1.5
4/20 00:40	74.8	↑1.4
4/20 00:50	76.0	↑1.2
4/20 01:00	77.1	↑1.1
4/20 01:10	78.0	↑0.9
4/20 01:20	78.8	↑0.8
4/20 01:30	79.4	↑0.6
4/20 01:40	79.8	↑0.4
4/20 01:50	80.1	↑0.3	満潮
4/20 02:00	80.1	0
4/20 02:10	80.0	↓-0.1
4/20 02:20	79.7	↓-0.3
4/20 02:30	79.3	↓-0.4
4/20 02:40	78.6	↓-0.7
4/20 02:50	77.8	↓-0.8
4/20 03:00	76.9	↓-0.9
4/20 03:10	75.8	↓-1.1
4/20 03:20	74.6	↓-1.2
4/20 03:30	73.3	↓-1.3
4/20 03:40	72.0	↓-1.3
4/20 03:50	70.6	↓-1.4
4/20 04:00	69.1	↓-1.5
4/20 04:10	67.7	↓-1.4
4/20 04:20	66.3	↓-1.4
4/20 04:30	64.9	↓-1.4
4/20 04:40	63.6	↓-1.3
4/20 04:50	62.3	↓-1.3
4/20 05:00	61.2	↓-1.1
4/20 05:10	60.1	↓-1.1
4/20 05:20	59.2	↓-0.9
4/20 05:30	58.3	↓-0.9
4/20 05:40	57.6	↓-0.7
4/20 05:50	57.1	↓-0.5
4/20 06:00	56.6	↓-0.5
4/20 06:10	56.3	↓-0.3
4/20 06:20	56.1	↓-0.2
4/20 06:30	56.0	↓-0.1	干潮
4/20 06:40	56.0	0
4/20 06:50	56.2	↑0.2
4/20 07:00	56.5	↑0.3
4/20 07:10	56.8	↑0.3
4/20 07:20	57.3	↑0.5
4/20 07:30	58.0	↑0.7
4/20 07:40	58.7	↑0.7
4/20 07:50	59.5	↑0.8
4/20 08:00	60.5	↑1.0
4/20 08:10	61.5	↑1.0
4/20 08:20	62.7	↑1.2
4/20 08:30	64.0	↑1.3
4/20 08:40	65.4	↑1.4
4/20 08:50	66.9	↑1.5
4/20 09:00	68.6	↑1.7
4/20 09:10	70.3	↑1.7
4/20 09:20	72.1	↑1.8
4/20 09:30	74.0	↑1.9
4/20 09:40	76.0	↑2.0
4/20 09:50	78.0	↑2.0
4/20 10:00	80.0	↑2.0
4/20 10:10	82.1	↑2.1
4/20 10:20	84.2	↑2.1
4/20 10:30	86.2	↑2.0
4/20 10:40	88.3	↑2.1
4/20 10:50	90.2	↑1.9
4/20 11:00	92.2	↑2.0
4/20 11:10	94.0	↑1.8
4/20 11:20	95.7	↑1.7
4/20 11:30	97.3	↑1.6
4/20 11:40	98.8	↑1.5
4/20 11:50	100.2	↑1.4
4/20 12:00	101.4	↑1.2
4/20 12:10	102.5	↑1.1
4/20 12:20	103.4	↑0.9
4/20 12:30	104.2	↑0.8
4/20 12:40	104.8	↑0.6
4/20 12:50	105.3	↑0.5
4/20 13:00	105.5	↑0.2
4/20 13:10	105.7	↑0.2	満潮
4/20 13:20	105.6	↓-0.1
4/20 13:30	105.4	↓-0.2
4/20 13:40	105.0	↓-0.4
4/20 13:50	104.4	↓-0.6
4/20 14:00	103.7	↓-0.7
4/20 14:10	102.8	↓-0.9
4/20 14:20	101.8	↓-1.0
4/20 14:30	100.5	↓-1.3
4/20 14:40	99.2	↓-1.3
4/20 14:50	97.6	↓-1.6
4/20 15:00	96.0	↓-1.6
4/20 15:10	94.2	↓-1.8
4/20 15:20	92.3	↓-1.9
4/20 15:30	90.3	↓-2.0
4/20 15:40	88.2	↓-2.1
4/20 15:50	86.0	↓-2.2
4/20 16:00	83.8	↓-2.2
4/20 16:10	81.5	↓-2.3	最大潮位差
4/20 16:20	79.2	↓-2.3	最大潮位差
4/20 16:30	76.9	↓-2.3	最大潮位差
4/20 16:40	74.6	↓-2.3	最大潮位差
4/20 16:50	72.3	↓-2.3	最大潮位差
4/20 17:00	70.1	↓-2.2
4/20 17:10	67.9	↓-2.2
4/20 17:20	65.7	↓-2.2
4/20 17:30	63.6	↓-2.1
4/20 17:40	61.6	↓-2.0
4/20 17:50	59.7	↓-1.9
4/20 18:00	57.8	↓-1.9
4/20 18:10	55.9	↓-1.9
4/20 18:20	54.2	↓-1.7
4/20 18:30	52.5	↓-1.7
4/20 18:40	50.9	↓-1.6
4/20 18:50	49.4	↓-1.5
4/20 19:00	47.9	↓-1.5
4/20 19:10	46.5	↓-1.4
4/20 19:20	45.2	↓-1.3
4/20 19:30	43.9	↓-1.3
4/20 19:40	42.8	↓-1.1
4/20 19:50	41.7	↓-1.1
4/20 20:00	40.8	↓-0.9
4/20 20:10	39.9	↓-0.9
4/20 20:20	39.1	↓-0.8
4/20 20:30	38.5	↓-0.6
4/20 20:40	38.0	↓-0.5
4/20 20:50	37.7	↓-0.3
4/20 21:00	37.5	↓-0.2	干潮
4/20 21:10	37.4	↓-0.1	干潮
4/20 21:20	37.5	↑0.1
4/20 21:30	37.7	↑0.2
4/20 21:40	38.1	↑0.4
4/20 21:50	38.6	↑0.5
4/20 22:00	39.3	↑0.7
4/20 22:10	40.1	↑0.8
4/20 22:20	41.1	↑1.0
4/20 22:30	42.2	↑1.1
4/20 22:40	43.4	↑1.2
4/20 22:50	44.6	↑1.2
4/20 23:00	46.0	↑1.4
4/20 23:10	47.5	↑1.5
4/20 23:20	49.0	↑1.5
4/20 23:30	50.5	↑1.5
4/20 23:40	52.1	↑1.6
4/20 23:50	53.7	↑1.6