20 (土)	05:59	11:29	17:19	23:54
	193cm	60cm	200cm	-16cm
大潮 出 06:19 入 17:25 出 18:05 入 06:46

千葉灯標（千葉）2038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	-11.1	↑2.9
2/20 00:10	-7.6	↑3.5
2/20 00:20	-3.4	↑4.2
2/20 00:30	1.3	↑4.7
2/20 00:40	6.6	↑5.3
2/20 00:50	12.3	↑5.7
2/20 01:00	18.5	↑6.2
2/20 01:10	25.2	↑6.7
2/20 01:20	32.1	↑6.9
2/20 01:30	39.4	↑7.3
2/20 01:40	46.9	↑7.5
2/20 01:50	54.6	↑7.7
2/20 02:00	62.5	↑7.9
2/20 02:10	70.5	↑8.0
2/20 02:20	78.6	↑8.1
2/20 02:30	86.6	↑8.0
2/20 02:40	94.7	↑8.1
2/20 02:50	102.7	↑8.0
2/20 03:00	110.5	↑7.8
2/20 03:10	118.2	↑7.7
2/20 03:20	125.8	↑7.6
2/20 03:30	133.1	↑7.3
2/20 03:40	140.1	↑7.0
2/20 03:50	146.8	↑6.7
2/20 04:00	153.2	↑6.4
2/20 04:10	159.2	↑6.0
2/20 04:20	164.9	↑5.7
2/20 04:30	170.0	↑5.1
2/20 04:40	174.7	↑4.7
2/20 04:50	178.9	↑4.2
2/20 05:00	182.6	↑3.7
2/20 05:10	185.7	↑3.1
2/20 05:20	188.3	↑2.6
2/20 05:30	190.3	↑2.0
2/20 05:40	191.7	↑1.4
2/20 05:50	192.5	↑0.8	満潮
2/20 06:00	192.7	↑0.2
2/20 06:10	192.3	↓-0.4
2/20 06:20	191.3	↓-1.0
2/20 06:30	189.7	↓-1.6
2/20 06:40	187.5	↓-2.2
2/20 06:50	184.8	↓-2.7
2/20 07:00	181.5	↓-3.3
2/20 07:10	177.8	↓-3.7
2/20 07:20	173.6	↓-4.2
2/20 07:30	169.0	↓-4.6
2/20 07:40	164.0	↓-5.0
2/20 07:50	158.7	↓-5.3
2/20 08:00	153.1	↓-5.6
2/20 08:10	147.2	↓-5.9
2/20 08:20	141.2	↓-6.0
2/20 08:30	135.0	↓-6.2
2/20 08:40	128.7	↓-6.3
2/20 08:50	122.4	↓-6.3
2/20 09:00	116.2	↓-6.2
2/20 09:10	110.0	↓-6.2
2/20 09:20	103.9	↓-6.1
2/20 09:30	98.0	↓-5.9
2/20 09:40	92.4	↓-5.6
2/20 09:50	87.1	↓-5.3
2/20 10:00	82.1	↓-5.0
2/20 10:10	77.6	↓-4.5
2/20 10:20	73.4	↓-4.2
2/20 10:30	69.8	↓-3.6
2/20 10:40	66.7	↓-3.1
2/20 10:50	64.1	↓-2.6
2/20 11:00	62.1	↓-2.0
2/20 11:10	60.7	↓-1.4
2/20 11:20	59.9	↓-0.8	干潮
2/20 11:30	59.8	↓-0.1
2/20 11:40	60.2	↑0.4
2/20 11:50	61.3	↑1.1
2/20 12:00	63.0	↑1.7
2/20 12:10	65.2	↑2.2
2/20 12:20	68.0	↑2.8
2/20 12:30	71.4	↑3.4
2/20 12:40	75.2	↑3.8
2/20 12:50	79.5	↑4.3
2/20 13:00	84.1	↑4.6
2/20 13:10	89.2	↑5.1
2/20 13:20	94.6	↑5.4
2/20 13:30	100.2	↑5.6
2/20 13:40	106.0	↑5.8
2/20 13:50	112.0	↑6.0
2/20 14:00	118.1	↑6.1
2/20 14:10	124.3	↑6.2
2/20 14:20	130.4	↑6.1
2/20 14:30	136.6	↑6.2
2/20 14:40	142.7	↑6.1
2/20 14:50	148.6	↑5.9
2/20 15:00	154.4	↑5.8
2/20 15:10	160.0	↑5.6
2/20 15:20	165.3	↑5.3
2/20 15:30	170.4	↑5.1
2/20 15:40	175.2	↑4.8
2/20 15:50	179.6	↑4.4
2/20 16:00	183.6	↑4.0
2/20 16:10	187.3	↑3.7
2/20 16:20	190.5	↑3.2
2/20 16:30	193.3	↑2.8
2/20 16:40	195.6	↑2.3
2/20 16:50	197.4	↑1.8
2/20 17:00	198.6	↑1.2
2/20 17:10	199.4	↑0.8	満潮
2/20 17:20	199.5	↑0.1
2/20 17:30	199.1	↓-0.4
2/20 17:40	198.1	↓-1.0
2/20 17:50	196.5	↓-1.6
2/20 18:00	194.3	↓-2.2
2/20 18:10	191.5	↓-2.8
2/20 18:20	188.1	↓-3.4
2/20 18:30	184.2	↓-3.9
2/20 18:40	179.7	↓-4.5
2/20 18:50	174.6	↓-5.1
2/20 19:00	169.0	↓-5.6
2/20 19:10	163.0	↓-6.0
2/20 19:20	156.5	↓-6.5
2/20 19:30	149.5	↓-7.0
2/20 19:40	142.2	↓-7.3
2/20 19:50	134.6	↓-7.6
2/20 20:00	126.6	↓-8.0
2/20 20:10	118.4	↓-8.2
2/20 20:20	110.0	↓-8.4
2/20 20:30	101.5	↓-8.5
2/20 20:40	92.9	↓-8.6
2/20 20:50	84.2	↓-8.7	最大潮位差
2/20 21:00	75.6	↓-8.6
2/20 21:10	67.0	↓-8.6
2/20 21:20	58.6	↓-8.4
2/20 21:30	50.3	↓-8.3
2/20 21:40	42.3	↓-8.0
2/20 21:50	34.6	↓-7.7
2/20 22:00	27.3	↓-7.3
2/20 22:10	20.4	↓-6.9
2/20 22:20	14.0	↓-6.4
2/20 22:30	8.0	↓-6.0
2/20 22:40	2.6	↓-5.4
2/20 22:50	-2.1	↓-4.7
2/20 23:00	-6.3	↓-4.2
2/20 23:10	-9.7	↓-3.4
2/20 23:20	-12.5	↓-2.8
2/20 23:30	-14.6	↓-2.1
2/20 23:40	-15.9	↓-1.3
2/20 23:50	-16.4	↓-0.5	干潮