20 (金)	07:34	01:35	20:15	13:54
	192cm	34cm	191cm	4cm
大潮 出 06:13 入 19:04 出 20:03 入 06:49 潮干狩り ◎ 12:01～15:47

長山（沖縄）2057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	58.3	↓-5.2
4/20 00:10	53.5	↓-4.8
4/20 00:20	49.2	↓-4.3
4/20 00:30	45.4	↓-3.8
4/20 00:40	42.1	↓-3.3
4/20 00:50	39.3	↓-2.8
4/20 01:00	37.0	↓-2.3
4/20 01:10	35.4	↓-1.6
4/20 01:20	34.3	↓-1.1
4/20 01:30	33.8	↓-0.5	干潮
4/20 01:40	33.8	0
4/20 01:50	34.5	↑0.7
4/20 02:00	35.8	↑1.3
4/20 02:10	37.6	↑1.8
4/20 02:20	40.0	↑2.4
4/20 02:30	42.9	↑2.9
4/20 02:40	46.4	↑3.5
4/20 02:50	50.3	↑3.9
4/20 03:00	54.8	↑4.5
4/20 03:10	59.6	↑4.8
4/20 03:20	64.9	↑5.3
4/20 03:30	70.5	↑5.6
4/20 03:40	76.5	↑6.0
4/20 03:50	82.7	↑6.2
4/20 04:00	89.2	↑6.5
4/20 04:10	95.8	↑6.6
4/20 04:20	102.6	↑6.8
4/20 04:30	109.4	↑6.8
4/20 04:40	116.3	↑6.9
4/20 04:50	123.1	↑6.8
4/20 05:00	129.9	↑6.8
4/20 05:10	136.5	↑6.6
4/20 05:20	143.0	↑6.5
4/20 05:30	149.2	↑6.2
4/20 05:40	155.2	↑6.0
4/20 05:50	160.8	↑5.6
4/20 06:00	166.1	↑5.3
4/20 06:10	171.0	↑4.9
4/20 06:20	175.4	↑4.4
4/20 06:30	179.4	↑4.0
4/20 06:40	182.8	↑3.4
4/20 06:50	185.7	↑2.9
4/20 07:00	188.0	↑2.3
4/20 07:10	189.7	↑1.7
4/20 07:20	190.9	↑1.2
4/20 07:30	191.4	↑0.5	満潮
4/20 07:40	191.3	↓-0.1
4/20 07:50	190.5	↓-0.8
4/20 08:00	189.2	↓-1.3
4/20 08:10	187.2	↓-2.0
4/20 08:20	184.7	↓-2.5
4/20 08:30	181.5	↓-3.2
4/20 08:40	177.8	↓-3.7
4/20 08:50	173.5	↓-4.3
4/20 09:00	168.7	↓-4.8
4/20 09:10	163.4	↓-5.3
4/20 09:20	157.7	↓-5.7
4/20 09:30	151.5	↓-6.2
4/20 09:40	145.0	↓-6.5
4/20 09:50	138.2	↓-6.8
4/20 10:00	131.0	↓-7.2
4/20 10:10	123.7	↓-7.3
4/20 10:20	116.1	↓-7.6
4/20 10:30	108.5	↓-7.6
4/20 10:40	100.7	↓-7.8	最大潮位差
4/20 10:50	93.0	↓-7.7
4/20 11:00	85.2	↓-7.8	最大潮位差
4/20 11:10	77.6	↓-7.6
4/20 11:20	70.0	↓-7.6
4/20 11:30	62.7	↓-7.3
4/20 11:40	55.6	↓-7.1
4/20 11:50	48.8	↓-6.8
4/20 12:00	42.3	↓-6.5
4/20 12:10	36.2	↓-6.1
4/20 12:20	30.6	↓-5.6
4/20 12:30	25.4	↓-5.2
4/20 12:40	20.7	↓-4.7
4/20 12:50	16.5	↓-4.2
4/20 13:00	12.9	↓-3.6
4/20 13:10	9.8	↓-3.1
4/20 13:20	7.4	↓-2.4
4/20 13:30	5.6	↓-1.8
4/20 13:40	4.4	↓-1.2
4/20 13:50	3.9	↓-0.5	干潮
4/20 14:00	4.0	↑0.1
4/20 14:10	4.7	↑0.7
4/20 14:20	6.1	↑1.4
4/20 14:30	8.1	↑2.0
4/20 14:40	10.8	↑2.7
4/20 14:50	14.0	↑3.2
4/20 15:00	17.8	↑3.8
4/20 15:10	22.2	↑4.4
4/20 15:20	27.0	↑4.8
4/20 15:30	32.4	↑5.4
4/20 15:40	38.2	↑5.8
4/20 15:50	44.4	↑6.2
4/20 16:00	50.9	↑6.5
4/20 16:10	57.8	↑6.9
4/20 16:20	65.0	↑7.2
4/20 16:30	72.3	↑7.3
4/20 16:40	79.9	↑7.6
4/20 16:50	87.5	↑7.6
4/20 17:00	95.3	↑7.8	最大潮位差
4/20 17:10	103.0	↑7.7
4/20 17:20	110.7	↑7.7
4/20 17:30	118.3	↑7.6
4/20 17:40	125.7	↑7.4
4/20 17:50	132.9	↑7.2
4/20 18:00	139.9	↑7.0
4/20 18:10	146.6	↑6.7
4/20 18:20	153.0	↑6.4
4/20 18:30	159.0	↑6.0
4/20 18:40	164.5	↑5.5
4/20 18:50	169.6	↑5.1
4/20 19:00	174.2	↑4.6
4/20 19:10	178.3	↑4.1
4/20 19:20	181.8	↑3.5
4/20 19:30	184.8	↑3.0
4/20 19:40	187.2	↑2.4
4/20 19:50	189.0	↑1.8
4/20 20:00	190.2	↑1.2
4/20 20:10	190.8	↑0.6	満潮
4/20 20:20	190.7	↓-0.1
4/20 20:30	190.1	↓-0.6
4/20 20:40	188.8	↓-1.3
4/20 20:50	187.0	↓-1.8
4/20 21:00	184.6	↓-2.4
4/20 21:10	181.7	↓-2.9
4/20 21:20	178.3	↓-3.4
4/20 21:30	174.3	↓-4.0
4/20 21:40	170.0	↓-4.3
4/20 21:50	165.2	↓-4.8
4/20 22:00	160.0	↓-5.2
4/20 22:10	154.5	↓-5.5
4/20 22:20	148.6	↓-5.9
4/20 22:30	142.6	↓-6.0
4/20 22:40	136.3	↓-6.3
4/20 22:50	129.9	↓-6.4
4/20 23:00	123.4	↓-6.5
4/20 23:10	116.8	↓-6.6
4/20 23:20	110.3	↓-6.5
4/20 23:30	103.8	↓-6.5
4/20 23:40	97.4	↓-6.4
4/20 23:50	91.1	↓-6.3