21 (月)	09:30	03:17	21:31	15:27
	182cm	43cm	188cm	64cm
中潮 出 06:27 入 18:37 出 21:28 入 09:46

長山（沖縄）2054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	121.3	↓-6.1
9/21 00:10	115.1	↓-6.2	最大潮位差
9/21 00:20	109.0	↓-6.1
9/21 00:30	103.0	↓-6.0
9/21 00:40	97.0	↓-6.0
9/21 00:50	91.1	↓-5.9
9/21 01:00	85.5	↓-5.6
9/21 01:10	80.0	↓-5.5
9/21 01:20	74.8	↓-5.2
9/21 01:30	69.9	↓-4.9
9/21 01:40	65.3	↓-4.6
9/21 01:50	61.1	↓-4.2
9/21 02:00	57.3	↓-3.8
9/21 02:10	53.8	↓-3.5
9/21 02:20	50.8	↓-3.0
9/21 02:30	48.3	↓-2.5
9/21 02:40	46.2	↓-2.1
9/21 02:50	44.6	↓-1.6
9/21 03:00	43.6	↓-1.0
9/21 03:10	43.0	↓-0.6	干潮
9/21 03:20	42.9	↓-0.1
9/21 03:30	43.4	↑0.5
9/21 03:40	44.4	↑1.0
9/21 03:50	45.8	↑1.4
9/21 04:00	47.7	↑1.9
9/21 04:10	50.1	↑2.4
9/21 04:20	53.0	↑2.9
9/21 04:30	56.3	↑3.3
9/21 04:40	60.0	↑3.7
9/21 04:50	64.0	↑4.0
9/21 05:00	68.5	↑4.5
9/21 05:10	73.2	↑4.7
9/21 05:20	78.2	↑5.0
9/21 05:30	83.4	↑5.2
9/21 05:40	88.9	↑5.5
9/21 05:50	94.5	↑5.6
9/21 06:00	100.2	↑5.7
9/21 06:10	106.0	↑5.8
9/21 06:20	111.9	↑5.9
9/21 06:30	117.7	↑5.8
9/21 06:40	123.5	↑5.8
9/21 06:50	129.2	↑5.7
9/21 07:00	134.8	↑5.6
9/21 07:10	140.2	↑5.4
9/21 07:20	145.4	↑5.2
9/21 07:30	150.4	↑5.0
9/21 07:40	155.1	↑4.7
9/21 07:50	159.5	↑4.4
9/21 08:00	163.6	↑4.1
9/21 08:10	167.3	↑3.7
9/21 08:20	170.6	↑3.3
9/21 08:30	173.5	↑2.9
9/21 08:40	176.0	↑2.5
9/21 08:50	178.0	↑2.0
9/21 09:00	179.6	↑1.6
9/21 09:10	180.8	↑1.2
9/21 09:20	181.4	↑0.6	満潮
9/21 09:30	181.6	↑0.2	満潮
9/21 09:40	181.3	↓-0.3
9/21 09:50	180.6	↓-0.7
9/21 10:00	179.4	↓-1.2
9/21 10:10	177.8	↓-1.6
9/21 10:20	175.7	↓-2.1
9/21 10:30	173.3	↓-2.4
9/21 10:40	170.4	↓-2.9
9/21 10:50	167.2	↓-3.2
9/21 11:00	163.6	↓-3.6
9/21 11:10	159.7	↓-3.9
9/21 11:20	155.5	↓-4.2
9/21 11:30	151.1	↓-4.4
9/21 11:40	146.5	↓-4.6
9/21 11:50	141.7	↓-4.8
9/21 12:00	136.7	↓-5.0
9/21 12:10	131.6	↓-5.1
9/21 12:20	126.5	↓-5.1
9/21 12:30	121.3	↓-5.2
9/21 12:40	116.1	↓-5.2
9/21 12:50	111.0	↓-5.1
9/21 13:00	106.0	↓-5.0
9/21 13:10	101.0	↓-5.0
9/21 13:20	96.3	↓-4.7
9/21 13:30	91.8	↓-4.5
9/21 13:40	87.4	↓-4.4
9/21 13:50	83.4	↓-4.0
9/21 14:00	79.7	↓-3.7
9/21 14:10	76.3	↓-3.4
9/21 14:20	73.2	↓-3.1
9/21 14:30	70.5	↓-2.7
9/21 14:40	68.3	↓-2.2
9/21 14:50	66.4	↓-1.9
9/21 15:00	65.0	↓-1.4
9/21 15:10	64.0	↓-1.0
9/21 15:20	63.5	↓-0.5	干潮
9/21 15:30	63.4	↓-0.1
9/21 15:40	63.8	↑0.4
9/21 15:50	64.7	↑0.9
9/21 16:00	66.0	↑1.3
9/21 16:10	67.8	↑1.8
9/21 16:20	69.9	↑2.1
9/21 16:30	72.5	↑2.6
9/21 16:40	75.5	↑3.0
9/21 16:50	78.9	↑3.4
9/21 17:00	82.6	↑3.7
9/21 17:10	86.6	↑4.0
9/21 17:20	90.9	↑4.3
9/21 17:30	95.5	↑4.6
9/21 17:40	100.3	↑4.8
9/21 17:50	105.3	↑5.0
9/21 18:00	110.4	↑5.1
9/21 18:10	115.7	↑5.3
9/21 18:20	121.0	↑5.3
9/21 18:30	126.3	↑5.3
9/21 18:40	131.6	↑5.3
9/21 18:50	136.9	↑5.3
9/21 19:00	142.1	↑5.2
9/21 19:10	147.2	↑5.1
9/21 19:20	152.1	↑4.9
9/21 19:30	156.8	↑4.7
9/21 19:40	161.2	↑4.4
9/21 19:50	165.4	↑4.2
9/21 20:00	169.3	↑3.9
9/21 20:10	172.9	↑3.6
9/21 20:20	176.1	↑3.2
9/21 20:30	179.0	↑2.9
9/21 20:40	181.4	↑2.4
9/21 20:50	183.4	↑2.0
9/21 21:00	185.0	↑1.6
9/21 21:10	186.1	↑1.1
9/21 21:20	186.8	↑0.7
9/21 21:30	187.0	↑0.2	満潮
9/21 21:40	186.8	↓-0.2
9/21 21:50	186.1	↓-0.7
9/21 22:00	184.9	↓-1.2
9/21 22:10	183.3	↓-1.6
9/21 22:20	181.2	↓-2.1
9/21 22:30	178.7	↓-2.5
9/21 22:40	175.8	↓-2.9
9/21 22:50	172.5	↓-3.3
9/21 23:00	168.8	↓-3.7
9/21 23:10	164.8	↓-4.0
9/21 23:20	160.4	↓-4.4
9/21 23:30	155.8	↓-4.6
9/21 23:40	150.8	↓-5.0
9/21 23:50	145.6	↓-5.2