20 (木)	08:23	02:30	21:45	15:11
	190cm	68cm	161cm	3cm
中潮 出 06:13 入 19:04 出 07:58 入 22:14 潮干狩り ◎ 13:08～17:17

長山（沖縄）2045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	109.8	↓-4.7
4/20 00:10	105.1	↓-4.7
4/20 00:20	100.6	↓-4.5
4/20 00:30	96.2	↓-4.4
4/20 00:40	92.0	↓-4.2
4/20 00:50	88.0	↓-4.0
4/20 01:00	84.3	↓-3.7
4/20 01:10	80.9	↓-3.4
4/20 01:20	77.8	↓-3.1
4/20 01:30	75.1	↓-2.7
4/20 01:40	72.8	↓-2.3
4/20 01:50	70.9	↓-1.9
4/20 02:00	69.4	↓-1.5
4/20 02:10	68.3	↓-1.1
4/20 02:20	67.7	↓-0.6	干潮
4/20 02:30	67.5	↓-0.2	干潮
4/20 02:40	67.8	↑0.3
4/20 02:50	68.5	↑0.7
4/20 03:00	69.7	↑1.2
4/20 03:10	71.4	↑1.7
4/20 03:20	73.4	↑2.0
4/20 03:30	76.0	↑2.6
4/20 03:40	78.9	↑2.9
4/20 03:50	82.2	↑3.3
4/20 04:00	85.8	↑3.6
4/20 04:10	89.8	↑4.0
4/20 04:20	94.1	↑4.3
4/20 04:30	98.7	↑4.6
4/20 04:40	103.5	↑4.8
4/20 04:50	108.5	↑5.0
4/20 05:00	113.7	↑5.2
4/20 05:10	119.0	↑5.3
4/20 05:20	124.3	↑5.3
4/20 05:30	129.8	↑5.5
4/20 05:40	135.2	↑5.4
4/20 05:50	140.5	↑5.3
4/20 06:00	145.8	↑5.3
4/20 06:10	151.0	↑5.2
4/20 06:20	156.0	↑5.0
4/20 06:30	160.7	↑4.7
4/20 06:40	165.2	↑4.5
4/20 06:50	169.5	↑4.3
4/20 07:00	173.4	↑3.9
4/20 07:10	177.0	↑3.6
4/20 07:20	180.1	↑3.1
4/20 07:30	182.9	↑2.8
4/20 07:40	185.2	↑2.3
4/20 07:50	187.1	↑1.9
4/20 08:00	188.4	↑1.3
4/20 08:10	189.3	↑0.9
4/20 08:20	189.7	↑0.4	満潮
4/20 08:30	189.5	↓-0.2
4/20 08:40	188.9	↓-0.6
4/20 08:50	187.7	↓-1.2
4/20 09:00	186.0	↓-1.7
4/20 09:10	183.7	↓-2.3
4/20 09:20	181.0	↓-2.7
4/20 09:30	177.8	↓-3.2
4/20 09:40	174.0	↓-3.8
4/20 09:50	169.9	↓-4.1
4/20 10:00	165.2	↓-4.7
4/20 10:10	160.2	↓-5.0
4/20 10:20	154.8	↓-5.4
4/20 10:30	149.0	↓-5.8
4/20 10:40	142.9	↓-6.1
4/20 10:50	136.5	↓-6.4
4/20 11:00	129.9	↓-6.6
4/20 11:10	123.1	↓-6.8
4/20 11:20	116.1	↓-7.0
4/20 11:30	108.9	↓-7.2
4/20 11:40	101.7	↓-7.2
4/20 11:50	94.5	↓-7.2
4/20 12:00	87.2	↓-7.3	最大潮位差
4/20 12:10	80.0	↓-7.2
4/20 12:20	72.9	↓-7.1
4/20 12:30	66.0	↓-6.9
4/20 12:40	59.2	↓-6.8
4/20 12:50	52.6	↓-6.6
4/20 13:00	46.3	↓-6.3
4/20 13:10	40.3	↓-6.0
4/20 13:20	34.7	↓-5.6
4/20 13:30	29.4	↓-5.3
4/20 13:40	24.5	↓-4.9
4/20 13:50	20.1	↓-4.4
4/20 14:00	16.1	↓-4.0
4/20 14:10	12.6	↓-3.5
4/20 14:20	9.6	↓-3.0
4/20 14:30	7.2	↓-2.4
4/20 14:40	5.2	↓-2.0
4/20 14:50	3.8	↓-1.4
4/20 15:00	3.0	↓-0.8
4/20 15:10	2.7	↓-0.3	干潮
4/20 15:20	3.0	↑0.3
4/20 15:30	3.8	↑0.8
4/20 15:40	5.1	↑1.3
4/20 15:50	7.0	↑1.9
4/20 16:00	9.4	↑2.4
4/20 16:10	12.3	↑2.9
4/20 16:20	15.6	↑3.3
4/20 16:30	19.4	↑3.8
4/20 16:40	23.6	↑4.2
4/20 16:50	28.2	↑4.6
4/20 17:00	33.2	↑5.0
4/20 17:10	38.4	↑5.2
4/20 17:20	43.9	↑5.5
4/20 17:30	49.7	↑5.8
4/20 17:40	55.7	↑6.0
4/20 17:50	61.8	↑6.1
4/20 18:00	68.0	↑6.2
4/20 18:10	74.4	↑6.4
4/20 18:20	80.7	↑6.3
4/20 18:30	87.0	↑6.3
4/20 18:40	93.3	↑6.3
4/20 18:50	99.5	↑6.2
4/20 19:00	105.6	↑6.1
4/20 19:10	111.5	↑5.9
4/20 19:20	117.1	↑5.6
4/20 19:30	122.6	↑5.5
4/20 19:40	127.7	↑5.1
4/20 19:50	132.6	↑4.9
4/20 20:00	137.2	↑4.6
4/20 20:10	141.3	↑4.1
4/20 20:20	145.1	↑3.8
4/20 20:30	148.5	↑3.4
4/20 20:40	151.5	↑3.0
4/20 20:50	154.1	↑2.6
4/20 21:00	156.3	↑2.2
4/20 21:10	158.0	↑1.7
4/20 21:20	159.2	↑1.2
4/20 21:30	160.0	↑0.8
4/20 21:40	160.4	↑0.4	満潮
4/20 21:50	160.3	↓-0.1
4/20 22:00	159.8	↓-0.5
4/20 22:10	159.0	↓-0.8
4/20 22:20	157.7	↓-1.3
4/20 22:30	156.0	↓-1.7
4/20 22:40	154.0	↓-2.0
4/20 22:50	151.6	↓-2.4
4/20 23:00	149.0	↓-2.6
4/20 23:10	146.0	↓-3.0
4/20 23:20	142.8	↓-3.2
4/20 23:30	139.4	↓-3.4
4/20 23:40	135.8	↓-3.6
4/20 23:50	132.1	↓-3.7