21 (火)	03:08	07:33	14:21	22:28
	74cm	62cm	97cm	39cm
小潮 出 05:40 入 18:54 出 11:29 入 00:50

八幡（福岡）2048年04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
4/21 00:00	55.3	↑1.6
4/21 00:10	56.9	↑1.6
4/21 00:20	58.4	↑1.5
4/21 00:30	60.0	↑1.6
4/21 00:40	61.5	↑1.5
4/21 00:50	63.0	↑1.5
4/21 01:00	64.4	↑1.4
4/21 01:10	65.7	↑1.3
4/21 01:20	67.0	↑1.3
4/21 01:30	68.2	↑1.2
4/21 01:40	69.3	↑1.1
4/21 01:50	70.3	↑1.0
4/21 02:00	71.1	↑0.8
4/21 02:10	71.9	↑0.8
4/21 02:20	72.6	↑0.7
4/21 02:30	73.1	↑0.5
4/21 02:40	73.5	↑0.4
4/21 02:50	73.8	↑0.3
4/21 03:00	73.9	↑0.1	満潮
4/21 03:10	74.0	↑0.1
4/21 03:20	73.9	↓-0.1
4/21 03:30	73.7	↓-0.2
4/21 03:40	73.4	↓-0.3
4/21 03:50	72.9	↓-0.5
4/21 04:00	72.4	↓-0.5
4/21 04:10	71.9	↓-0.5
4/21 04:20	71.2	↓-0.7
4/21 04:30	70.6	↓-0.6
4/21 04:40	69.8	↓-0.8
4/21 04:50	69.1	↓-0.7
4/21 05:00	68.4	↓-0.7
4/21 05:10	67.6	↓-0.8
4/21 05:20	66.9	↓-0.7
4/21 05:30	66.2	↓-0.7
4/21 05:40	65.5	↓-0.7
4/21 05:50	64.9	↓-0.6
4/21 06:00	64.3	↓-0.6
4/21 06:10	63.8	↓-0.5
4/21 06:20	63.3	↓-0.5
4/21 06:30	62.9	↓-0.4
4/21 06:40	62.6	↓-0.3
4/21 06:50	62.3	↓-0.3
4/21 07:00	62.0	↓-0.3
4/21 07:10	61.9	↓-0.1
4/21 07:20	61.8	↓-0.1
4/21 07:30	61.7	↓-0.1	干潮
4/21 07:40	61.7	0
4/21 07:50	61.8	↑0.1
4/21 08:00	62.0	↑0.2
4/21 08:10	62.2	↑0.2
4/21 08:20	62.5	↑0.3
4/21 08:30	62.9	↑0.4
4/21 08:40	63.4	↑0.5
4/21 08:50	64.0	↑0.6
4/21 09:00	64.6	↑0.6
4/21 09:10	65.3	↑0.7
4/21 09:20	66.2	↑0.9
4/21 09:30	67.1	↑0.9
4/21 09:40	68.1	↑1.0
4/21 09:50	69.1	↑1.0
4/21 10:00	70.3	↑1.2
4/21 10:10	71.5	↑1.2
4/21 10:20	72.8	↑1.3
4/21 10:30	74.1	↑1.3
4/21 10:40	75.5	↑1.4
4/21 10:50	76.9	↑1.4
4/21 11:00	78.4	↑1.5
4/21 11:10	79.8	↑1.4
4/21 11:20	81.2	↑1.4
4/21 11:30	82.7	↑1.5
4/21 11:40	84.0	↑1.3
4/21 11:50	85.4	↑1.4
4/21 12:00	86.7	↑1.3
4/21 12:10	88.0	↑1.3
4/21 12:20	89.2	↑1.2
4/21 12:30	90.3	↑1.1
4/21 12:40	91.4	↑1.1
4/21 12:50	92.3	↑0.9
4/21 13:00	93.2	↑0.9
4/21 13:10	94.0	↑0.8
4/21 13:20	94.7	↑0.7
4/21 13:30	95.3	↑0.6
4/21 13:40	95.8	↑0.5
4/21 13:50	96.2	↑0.4
4/21 14:00	96.5	↑0.3
4/21 14:10	96.7	↑0.2
4/21 14:20	96.7	0	満潮
4/21 14:30	96.7	0
4/21 14:40	96.5	↓-0.2
4/21 14:50	96.2	↓-0.3
4/21 15:00	95.8	↓-0.4
4/21 15:10	95.2	↓-0.6
4/21 15:20	94.6	↓-0.6
4/21 15:30	93.8	↓-0.8
4/21 15:40	92.9	↓-0.9
4/21 15:50	91.9	↓-1.0
4/21 16:00	90.9	↓-1.0
4/21 16:10	89.7	↓-1.2
4/21 16:20	88.4	↓-1.3
4/21 16:30	87.1	↓-1.3
4/21 16:40	85.6	↓-1.5
4/21 16:50	84.1	↓-1.5
4/21 17:00	82.6	↓-1.5
4/21 17:10	81.0	↓-1.6
4/21 17:20	79.4	↓-1.6
4/21 17:30	77.8	↓-1.6
4/21 17:40	76.1	↓-1.7
4/21 17:50	74.4	↓-1.7
4/21 18:00	72.7	↓-1.7
4/21 18:10	70.9	↓-1.8	最大潮位差
4/21 18:20	69.2	↓-1.7
4/21 18:30	67.4	↓-1.8	最大潮位差
4/21 18:40	65.7	↓-1.7
4/21 18:50	63.9	↓-1.8	最大潮位差
4/21 19:00	62.2	↓-1.7
4/21 19:10	60.4	↓-1.8	最大潮位差
4/21 19:20	58.7	↓-1.7
4/21 19:30	57.0	↓-1.7
4/21 19:40	55.3	↓-1.7
4/21 19:50	53.7	↓-1.6
4/21 20:00	52.0	↓-1.7
4/21 20:10	50.5	↓-1.5
4/21 20:20	49.0	↓-1.5
4/21 20:30	47.5	↓-1.5
4/21 20:40	46.1	↓-1.4
4/21 20:50	44.8	↓-1.3
4/21 21:00	43.6	↓-1.2
4/21 21:10	42.5	↓-1.1
4/21 21:20	41.6	↓-0.9
4/21 21:30	40.7	↓-0.9
4/21 21:40	40.0	↓-0.7
4/21 21:50	39.4	↓-0.6
4/21 22:00	38.9	↓-0.5
4/21 22:10	38.6	↓-0.3
4/21 22:20	38.4	↓-0.2	干潮
4/21 22:30	38.4	0
4/21 22:40	38.5	↑0.1
4/21 22:50	38.8	↑0.3
4/21 23:00	39.1	↑0.3
4/21 23:10	39.6	↑0.5
4/21 23:20	40.3	↑0.7
4/21 23:30	41.0	↑0.7
4/21 23:40	41.9	↑0.9
4/21 23:50	42.8	↑0.9