20 (土)	09:11	02:54	21:05	15:04
	189cm	31cm	198cm	62cm
中潮 出 06:27 入 18:39 出 09:25 入 20:48

長山（沖縄）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	102.5	↓-6.9	最大潮位差
9/20 00:10	95.7	↓-6.8
9/20 00:20	89.0	↓-6.7
9/20 00:30	82.4	↓-6.6
9/20 00:40	76.1	↓-6.3
9/20 00:50	70.0	↓-6.1
9/20 01:00	64.3	↓-5.7
9/20 01:10	58.8	↓-5.5
9/20 01:20	53.8	↓-5.0
9/20 01:30	49.2	↓-4.6
9/20 01:40	45.0	↓-4.2
9/20 01:50	41.3	↓-3.7
9/20 02:00	38.1	↓-3.2
9/20 02:10	35.4	↓-2.7
9/20 02:20	33.2	↓-2.2
9/20 02:30	31.6	↓-1.6
9/20 02:40	30.6	↓-1.0
9/20 02:50	30.2	↓-0.4	干潮
9/20 03:00	30.3	↑0.1
9/20 03:10	30.9	↑0.6
9/20 03:20	32.2	↑1.3
9/20 03:30	34.0	↑1.8
9/20 03:40	36.3	↑2.3
9/20 03:50	39.2	↑2.9
9/20 04:00	42.6	↑3.4
9/20 04:10	46.4	↑3.8
9/20 04:20	50.7	↑4.3
9/20 04:30	55.4	↑4.7
9/20 04:40	60.4	↑5.0
9/20 04:50	65.9	↑5.5
9/20 05:00	71.6	↑5.7
9/20 05:10	77.6	↑6.0
9/20 05:20	83.8	↑6.2
9/20 05:30	90.2	↑6.4
9/20 05:40	96.7	↑6.5
9/20 05:50	103.3	↑6.6
9/20 06:00	109.9	↑6.6
9/20 06:10	116.5	↑6.6
9/20 06:20	123.1	↑6.6
9/20 06:30	129.6	↑6.5
9/20 06:40	135.9	↑6.3
9/20 06:50	142.0	↑6.1
9/20 07:00	147.9	↑5.9
9/20 07:10	153.6	↑5.7
9/20 07:20	158.9	↑5.3
9/20 07:30	163.8	↑4.9
9/20 07:40	168.4	↑4.6
9/20 07:50	172.6	↑4.2
9/20 08:00	176.4	↑3.8
9/20 08:10	179.7	↑3.3
9/20 08:20	182.5	↑2.8
9/20 08:30	184.8	↑2.3
9/20 08:40	186.6	↑1.8
9/20 08:50	187.9	↑1.3
9/20 09:00	188.7	↑0.8
9/20 09:10	188.9	↑0.2	満潮
9/20 09:20	188.6	↓-0.3
9/20 09:30	187.9	↓-0.7
9/20 09:40	186.6	↓-1.3
9/20 09:50	184.8	↓-1.8
9/20 10:00	182.5	↓-2.3
9/20 10:10	179.8	↓-2.7
9/20 10:20	176.6	↓-3.2
9/20 10:30	173.1	↓-3.5
9/20 10:40	169.1	↓-4.0
9/20 10:50	164.9	↓-4.2
9/20 11:00	160.3	↓-4.6
9/20 11:10	155.4	↓-4.9
9/20 11:20	150.3	↓-5.1
9/20 11:30	145.0	↓-5.3
9/20 11:40	139.5	↓-5.5
9/20 11:50	134.0	↓-5.5
9/20 12:00	128.3	↓-5.7
9/20 12:10	122.7	↓-5.6
9/20 12:20	117.0	↓-5.7
9/20 12:30	111.5	↓-5.5
9/20 12:40	106.0	↓-5.5
9/20 12:50	100.7	↓-5.3
9/20 13:00	95.5	↓-5.2
9/20 13:10	90.7	↓-4.8
9/20 13:20	86.0	↓-4.7
9/20 13:30	81.7	↓-4.3
9/20 13:40	77.7	↓-4.0
9/20 13:50	74.1	↓-3.6
9/20 14:00	70.9	↓-3.2
9/20 14:10	68.1	↓-2.8
9/20 14:20	65.8	↓-2.3
9/20 14:30	63.9	↓-1.9
9/20 14:40	62.5	↓-1.4
9/20 14:50	61.6	↓-0.9
9/20 15:00	61.2	↓-0.4	干潮
9/20 15:10	61.3	↑0.1
9/20 15:20	62.0	↑0.7
9/20 15:30	63.1	↑1.1
9/20 15:40	64.7	↑1.6
9/20 15:50	66.8	↑2.1
9/20 16:00	69.4	↑2.6
9/20 16:10	72.4	↑3.0
9/20 16:20	75.8	↑3.4
9/20 16:30	79.7	↑3.9
9/20 16:40	83.9	↑4.2
9/20 16:50	88.4	↑4.5
9/20 17:00	93.3	↑4.9
9/20 17:10	98.5	↑5.2
9/20 17:20	103.8	↑5.3
9/20 17:30	109.4	↑5.6
9/20 17:40	115.1	↑5.7
9/20 17:50	120.9	↑5.8
9/20 18:00	126.8	↑5.9
9/20 18:10	132.7	↑5.9
9/20 18:20	138.6	↑5.9
9/20 18:30	144.4	↑5.8
9/20 18:40	150.1	↑5.7
9/20 18:50	155.7	↑5.6
9/20 19:00	161.0	↑5.3
9/20 19:10	166.1	↑5.1
9/20 19:20	170.9	↑4.8
9/20 19:30	175.5	↑4.6
9/20 19:40	179.6	↑4.1
9/20 19:50	183.4	↑3.8
9/20 20:00	186.8	↑3.4
9/20 20:10	189.7	↑2.9
9/20 20:20	192.2	↑2.5
9/20 20:30	194.2	↑2.0
9/20 20:40	195.7	↑1.5
9/20 20:50	196.7	↑1.0
9/20 21:00	197.2	↑0.5	満潮
9/20 21:10	197.2	0
9/20 21:20	196.6	↓-0.6
9/20 21:30	195.5	↓-1.1
9/20 21:40	193.9	↓-1.6
9/20 21:50	191.8	↓-2.1
9/20 22:00	189.2	↓-2.6
9/20 22:10	186.0	↓-3.2
9/20 22:20	182.5	↓-3.5
9/20 22:30	178.4	↓-4.1
9/20 22:40	174.0	↓-4.4
9/20 22:50	169.2	↓-4.8
9/20 23:00	164.0	↓-5.2
9/20 23:10	158.4	↓-5.6
9/20 23:20	152.6	↓-5.8
9/20 23:30	146.5	↓-6.1
9/20 23:40	140.3	↓-6.2
9/20 23:50	133.8	↓-6.5