20 (木)	06:43	00:18	18:22	12:22
	157cm	-3cm	185cm	47cm
大潮 出 07:10 入 18:37 出 05:41 入 17:14

長山（沖縄）2031年02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
2/20 00:00	-2.8	↓-1.2
2/20 00:10	-3.5	↓-0.7	干潮
2/20 00:20	-3.6	↓-0.1
2/20 00:30	-3.2	↑0.4
2/20 00:40	-2.2	↑1.0
2/20 00:50	-0.7	↑1.5
2/20 01:00	1.3	↑2.0
2/20 01:10	3.9	↑2.6
2/20 01:20	6.9	↑3.0
2/20 01:30	10.4	↑3.5
2/20 01:40	14.3	↑3.9
2/20 01:50	18.7	↑4.4
2/20 02:00	23.4	↑4.7
2/20 02:10	28.5	↑5.1
2/20 02:20	34.0	↑5.5
2/20 02:30	39.7	↑5.7
2/20 02:40	45.7	↑6.0
2/20 02:50	51.8	↑6.1
2/20 03:00	58.2	↑6.4
2/20 03:10	64.7	↑6.5
2/20 03:20	71.2	↑6.5
2/20 03:30	77.8	↑6.6
2/20 03:40	84.4	↑6.6
2/20 03:50	90.9	↑6.5
2/20 04:00	97.3	↑6.4
2/20 04:10	103.6	↑6.3
2/20 04:20	109.7	↑6.1
2/20 04:30	115.6	↑5.9
2/20 04:40	121.2	↑5.6
2/20 04:50	126.5	↑5.3
2/20 05:00	131.4	↑4.9
2/20 05:10	136.0	↑4.6
2/20 05:20	140.2	↑4.2
2/20 05:30	144.0	↑3.8
2/20 05:40	147.3	↑3.3
2/20 05:50	150.1	↑2.8
2/20 06:00	152.5	↑2.4
2/20 06:10	154.3	↑1.8
2/20 06:20	155.7	↑1.4
2/20 06:30	156.6	↑0.9
2/20 06:40	156.9	↑0.3	満潮
2/20 06:50	156.7	↓-0.2
2/20 07:00	156.1	↓-0.6
2/20 07:10	154.9	↓-1.2
2/20 07:20	153.3	↓-1.6
2/20 07:30	151.3	↓-2.0
2/20 07:40	148.8	↓-2.5
2/20 07:50	145.9	↓-2.9
2/20 08:00	142.6	↓-3.3
2/20 08:10	139.0	↓-3.6
2/20 08:20	135.1	↓-3.9
2/20 08:30	130.8	↓-4.3
2/20 08:40	126.4	↓-4.4
2/20 08:50	121.7	↓-4.7
2/20 09:00	116.9	↓-4.8
2/20 09:10	112.0	↓-4.9
2/20 09:20	107.0	↓-5.0
2/20 09:30	101.9	↓-5.1
2/20 09:40	96.8	↓-5.1
2/20 09:50	91.8	↓-5.0
2/20 10:00	86.9	↓-4.9
2/20 10:10	82.1	↓-4.8
2/20 10:20	77.5	↓-4.6
2/20 10:30	73.1	↓-4.4
2/20 10:40	68.9	↓-4.2
2/20 10:50	65.0	↓-3.9
2/20 11:00	61.4	↓-3.6
2/20 11:10	58.1	↓-3.3
2/20 11:20	55.2	↓-2.9
2/20 11:30	52.8	↓-2.4
2/20 11:40	50.7	↓-2.1
2/20 11:50	49.0	↓-1.7
2/20 12:00	47.8	↓-1.2
2/20 12:10	47.1	↓-0.7
2/20 12:20	46.8	↓-0.3	干潮
2/20 12:30	47.0	↑0.2
2/20 12:40	47.7	↑0.7
2/20 12:50	48.9	↑1.2
2/20 13:00	50.5	↑1.6
2/20 13:10	52.6	↑2.1
2/20 13:20	55.2	↑2.6
2/20 13:30	58.2	↑3.0
2/20 13:40	61.6	↑3.4
2/20 13:50	65.4	↑3.8
2/20 14:00	69.6	↑4.2
2/20 14:10	74.2	↑4.6
2/20 14:20	79.0	↑4.8
2/20 14:30	84.2	↑5.2
2/20 14:40	89.5	↑5.3
2/20 14:50	95.1	↑5.6
2/20 15:00	100.9	↑5.8
2/20 15:10	106.7	↑5.8
2/20 15:20	112.7	↑6.0
2/20 15:30	118.7	↑6.0
2/20 15:40	124.7	↑6.0
2/20 15:50	130.6	↑5.9
2/20 16:00	136.4	↑5.8
2/20 16:10	142.1	↑5.7
2/20 16:20	147.6	↑5.5
2/20 16:30	152.8	↑5.2
2/20 16:40	157.8	↑5.0
2/20 16:50	162.4	↑4.6
2/20 17:00	166.7	↑4.3
2/20 17:10	170.6	↑3.9
2/20 17:20	174.1	↑3.5
2/20 17:30	177.1	↑3.0
2/20 17:40	179.6	↑2.5
2/20 17:50	181.6	↑2.0
2/20 18:00	183.1	↑1.5
2/20 18:10	184.0	↑0.9
2/20 18:20	184.4	↑0.4	満潮
2/20 18:30	184.2	↓-0.2
2/20 18:40	183.4	↓-0.8
2/20 18:50	182.1	↓-1.3
2/20 19:00	180.1	↓-2.0
2/20 19:10	177.6	↓-2.5
2/20 19:20	174.6	↓-3.0
2/20 19:30	171.0	↓-3.6
2/20 19:40	166.9	↓-4.1
2/20 19:50	162.4	↓-4.5
2/20 20:00	157.3	↓-5.1
2/20 20:10	151.8	↓-5.5
2/20 20:20	145.9	↓-5.9
2/20 20:30	139.7	↓-6.2
2/20 20:40	133.1	↓-6.6
2/20 20:50	126.2	↓-6.9
2/20 21:00	119.1	↓-7.1
2/20 21:10	111.9	↓-7.2
2/20 21:20	104.4	↓-7.5
2/20 21:30	96.9	↓-7.5
2/20 21:40	89.3	↓-7.6	最大潮位差
2/20 21:50	81.7	↓-7.6	最大潮位差
2/20 22:00	74.1	↓-7.6	最大潮位差
2/20 22:10	66.6	↓-7.5
2/20 22:20	59.3	↓-7.3
2/20 22:30	52.2	↓-7.1
2/20 22:40	45.2	↓-7.0
2/20 22:50	38.6	↓-6.6
2/20 23:00	32.3	↓-6.3
2/20 23:10	26.3	↓-6.0
2/20 23:20	20.8	↓-5.5
2/20 23:30	15.6	↓-5.2
2/20 23:40	11.0	↓-4.6
2/20 23:50	6.8	↓-4.2