20 (土)	05:51	11:29	17:11	23:46
	157cm	68cm	161cm	5cm
大潮 出 06:22 入 17:30 出 18:10 入 06:49

館山（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	8.3	↑2.4
2/20 00:10	11.1	↑2.8
2/20 00:20	14.4	↑3.3
2/20 00:30	18.1	↑3.7
2/20 00:40	22.1	↑4.0
2/20 00:50	26.5	↑4.4
2/20 01:00	31.1	↑4.6
2/20 01:10	36.1	↑5.0
2/20 01:20	41.3	↑5.2
2/20 01:30	46.7	↑5.4
2/20 01:40	52.3	↑5.6
2/20 01:50	58.1	↑5.8
2/20 02:00	63.9	↑5.8
2/20 02:10	69.9	↑6.0
2/20 02:20	75.9	↑6.0
2/20 02:30	81.9	↑6.0
2/20 02:40	87.9	↑6.0
2/20 02:50	93.8	↑5.9
2/20 03:00	99.7	↑5.9
2/20 03:10	105.4	↑5.7
2/20 03:20	110.9	↑5.5
2/20 03:30	116.3	↑5.4
2/20 03:40	121.4	↑5.1
2/20 03:50	126.3	↑4.9
2/20 04:00	130.9	↑4.6
2/20 04:10	135.2	↑4.3
2/20 04:20	139.1	↑3.9
2/20 04:30	142.7	↑3.6
2/20 04:40	145.9	↑3.2
2/20 04:50	148.6	↑2.7
2/20 05:00	151.0	↑2.4
2/20 05:10	153.0	↑2.0
2/20 05:20	154.5	↑1.5
2/20 05:30	155.6	↑1.1
2/20 05:40	156.2	↑0.6
2/20 05:50	156.4	↑0.2	満潮
2/20 06:00	156.2	↓-0.2
2/20 06:10	155.6	↓-0.6
2/20 06:20	154.6	↓-1.0
2/20 06:30	153.2	↓-1.4
2/20 06:40	151.5	↓-1.7
2/20 06:50	149.4	↓-2.1
2/20 07:00	146.9	↓-2.5
2/20 07:10	144.2	↓-2.7
2/20 07:20	141.2	↓-3.0
2/20 07:30	138.0	↓-3.2
2/20 07:40	134.6	↓-3.4
2/20 07:50	131.0	↓-3.6
2/20 08:00	127.2	↓-3.8
2/20 08:10	123.3	↓-3.9
2/20 08:20	119.3	↓-4.0
2/20 08:30	115.2	↓-4.1
2/20 08:40	111.2	↓-4.0
2/20 08:50	107.1	↓-4.1
2/20 09:00	103.1	↓-4.0
2/20 09:10	99.1	↓-4.0
2/20 09:20	95.2	↓-3.9
2/20 09:30	91.5	↓-3.7
2/20 09:40	88.0	↓-3.5
2/20 09:50	84.6	↓-3.4
2/20 10:00	81.5	↓-3.1
2/20 10:10	78.6	↓-2.9
2/20 10:20	76.1	↓-2.5
2/20 10:30	73.8	↓-2.3
2/20 10:40	71.9	↓-1.9
2/20 10:50	70.3	↓-1.6
2/20 11:00	69.0	↓-1.3
2/20 11:10	68.2	↓-0.8
2/20 11:20	67.7	↓-0.5	干潮
2/20 11:30	67.5	↓-0.2
2/20 11:40	67.8	↑0.3
2/20 11:50	68.5	↑0.7
2/20 12:00	69.5	↑1.0
2/20 12:10	70.9	↑1.4
2/20 12:20	72.6	↑1.7
2/20 12:30	74.7	↑2.1
2/20 12:40	77.0	↑2.3
2/20 12:50	79.7	↑2.7
2/20 13:00	82.7	↑3.0
2/20 13:10	85.8	↑3.1
2/20 13:20	89.3	↑3.5
2/20 13:30	92.9	↑3.6
2/20 13:40	96.6	↑3.7
2/20 13:50	100.6	↑4.0
2/20 14:00	104.6	↑4.0
2/20 14:10	108.7	↑4.1
2/20 14:20	112.9	↑4.2
2/20 14:30	117.0	↑4.1
2/20 14:40	121.2	↑4.2
2/20 14:50	125.3	↑4.1
2/20 15:00	129.3	↑4.0
2/20 15:10	133.3	↑4.0
2/20 15:20	137.0	↑3.7
2/20 15:30	140.6	↑3.6
2/20 15:40	144.0	↑3.4
2/20 15:50	147.2	↑3.2
2/20 16:00	150.0	↑2.8
2/20 16:10	152.6	↑2.6
2/20 16:20	154.8	↑2.2
2/20 16:30	156.7	↑1.9
2/20 16:40	158.2	↑1.5
2/20 16:50	159.3	↑1.1
2/20 17:00	160.0	↑0.7
2/20 17:10	160.2	↑0.2	満潮
2/20 17:20	160.0	↓-0.2
2/20 17:30	159.3	↓-0.7
2/20 17:40	158.2	↓-1.1
2/20 17:50	156.6	↓-1.6
2/20 18:00	154.6	↓-2.0
2/20 18:10	152.1	↓-2.5
2/20 18:20	149.2	↓-2.9
2/20 18:30	145.9	↓-3.3
2/20 18:40	142.2	↓-3.7
2/20 18:50	138.1	↓-4.1
2/20 19:00	133.6	↓-4.5
2/20 19:10	128.8	↓-4.8
2/20 19:20	123.7	↓-5.1
2/20 19:30	118.4	↓-5.3
2/20 19:40	112.8	↓-5.6
2/20 19:50	107.0	↓-5.8
2/20 20:00	101.1	↓-5.9
2/20 20:10	95.0	↓-6.1
2/20 20:20	88.8	↓-6.2	最大潮位差
2/20 20:30	82.6	↓-6.2	最大潮位差
2/20 20:40	76.4	↓-6.2	最大潮位差
2/20 20:50	70.2	↓-6.2	最大潮位差
2/20 21:00	64.0	↓-6.2	最大潮位差
2/20 21:10	58.0	↓-6.0
2/20 21:20	52.1	↓-5.9
2/20 21:30	46.4	↓-5.7
2/20 21:40	40.9	↓-5.5
2/20 21:50	35.7	↓-5.2
2/20 22:00	30.8	↓-4.9
2/20 22:10	26.2	↓-4.6
2/20 22:20	21.9	↓-4.3
2/20 22:30	18.1	↓-3.8
2/20 22:40	14.7	↓-3.4
2/20 22:50	11.7	↓-3.0
2/20 23:00	9.2	↓-2.5
2/20 23:10	7.2	↓-2.0
2/20 23:20	5.7	↓-1.5
2/20 23:30	4.7	↓-1.0
2/20 23:40	4.2	↓-0.5	干潮
2/20 23:50	4.2	0