20 (土)	05:03	10:28	16:06	22:50
	147cm	76cm	156cm	2cm
大潮 出 06:22 入 17:30 出 16:43 入 05:42

館山（千葉）2027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	29.3	↑4.1
2/20 00:10	33.7	↑4.4
2/20 00:20	38.3	↑4.6
2/20 00:30	43.1	↑4.8
2/20 00:40	48.1	↑5.0
2/20 00:50	53.2	↑5.1
2/20 01:00	58.4	↑5.2
2/20 01:10	63.7	↑5.3
2/20 01:20	69.0	↑5.3
2/20 01:30	74.4	↑5.4
2/20 01:40	79.8	↑5.4
2/20 01:50	85.2	↑5.4
2/20 02:00	90.5	↑5.3
2/20 02:10	95.7	↑5.2
2/20 02:20	100.8	↑5.1
2/20 02:30	105.7	↑4.9
2/20 02:40	110.5	↑4.8
2/20 02:50	115.1	↑4.6
2/20 03:00	119.4	↑4.3
2/20 03:10	123.5	↑4.1
2/20 03:20	127.3	↑3.8
2/20 03:30	130.7	↑3.4
2/20 03:40	133.9	↑3.2
2/20 03:50	136.7	↑2.8
2/20 04:00	139.2	↑2.5
2/20 04:10	141.3	↑2.1
2/20 04:20	143.0	↑1.7
2/20 04:30	144.3	↑1.3
2/20 04:40	145.3	↑1.0
2/20 04:50	145.9	↑0.6
2/20 05:00	146.2	↑0.3	満潮
2/20 05:10	146.1	↓-0.1
2/20 05:20	145.6	↓-0.5
2/20 05:30	144.8	↓-0.8
2/20 05:40	143.7	↓-1.1
2/20 05:50	142.3	↓-1.4
2/20 06:00	140.6	↓-1.7
2/20 06:10	138.7	↓-1.9
2/20 06:20	136.5	↓-2.2
2/20 06:30	134.0	↓-2.5
2/20 06:40	131.4	↓-2.6
2/20 06:50	128.6	↓-2.8
2/20 07:00	125.6	↓-3.0
2/20 07:10	122.5	↓-3.1
2/20 07:20	119.3	↓-3.2
2/20 07:30	116.0	↓-3.3
2/20 07:40	112.6	↓-3.4
2/20 07:50	109.2	↓-3.4
2/20 08:00	105.9	↓-3.3
2/20 08:10	102.5	↓-3.4
2/20 08:20	99.3	↓-3.2
2/20 08:30	96.1	↓-3.2
2/20 08:40	93.0	↓-3.1
2/20 08:50	90.2	↓-2.8
2/20 09:00	87.5	↓-2.7
2/20 09:10	85.0	↓-2.5
2/20 09:20	82.7	↓-2.3
2/20 09:30	80.8	↓-1.9
2/20 09:40	79.1	↓-1.7
2/20 09:50	77.7	↓-1.4
2/20 10:00	76.6	↓-1.1
2/20 10:10	75.8	↓-0.8
2/20 10:20	75.4	↓-0.4	干潮
2/20 10:30	75.3	↓-0.1
2/20 10:40	75.6	↑0.3
2/20 10:50	76.2	↑0.6
2/20 11:00	77.1	↑0.9
2/20 11:10	78.3	↑1.2
2/20 11:20	79.9	↑1.6
2/20 11:30	81.7	↑1.8
2/20 11:40	83.8	↑2.1
2/20 11:50	86.1	↑2.3
2/20 12:00	88.7	↑2.6
2/20 12:10	91.5	↑2.8
2/20 12:20	94.5	↑3.0
2/20 12:30	97.7	↑3.2
2/20 12:40	101.0	↑3.3
2/20 12:50	104.4	↑3.4
2/20 13:00	107.9	↑3.5
2/20 13:10	111.5	↑3.6
2/20 13:20	115.2	↑3.7
2/20 13:30	118.8	↑3.6
2/20 13:40	122.4	↑3.6
2/20 13:50	126.0	↑3.6
2/20 14:00	129.6	↑3.6
2/20 14:10	133.0	↑3.4
2/20 14:20	136.3	↑3.3
2/20 14:30	139.4	↑3.1
2/20 14:40	142.3	↑2.9
2/20 14:50	145.1	↑2.8
2/20 15:00	147.5	↑2.4
2/20 15:10	149.7	↑2.2
2/20 15:20	151.6	↑1.9
2/20 15:30	153.1	↑1.5
2/20 15:40	154.3	↑1.2
2/20 15:50	155.1	↑0.8
2/20 16:00	155.5	↑0.4	満潮
2/20 16:10	155.5	0
2/20 16:20	155.1	↓-0.4
2/20 16:30	154.3	↓-0.8
2/20 16:40	153.0	↓-1.3
2/20 16:50	151.3	↓-1.7
2/20 17:00	149.2	↓-2.1
2/20 17:10	146.7	↓-2.5
2/20 17:20	143.8	↓-2.9
2/20 17:30	140.5	↓-3.3
2/20 17:40	136.8	↓-3.7
2/20 17:50	132.8	↓-4.0
2/20 18:00	128.4	↓-4.4
2/20 18:10	123.8	↓-4.6
2/20 18:20	118.8	↓-5.0
2/20 18:30	113.7	↓-5.1
2/20 18:40	108.3	↓-5.4
2/20 18:50	102.7	↓-5.6
2/20 19:00	97.0	↓-5.7
2/20 19:10	91.1	↓-5.9
2/20 19:20	85.1	↓-6.0	最大潮位差
2/20 19:30	79.1	↓-6.0	最大潮位差
2/20 19:40	73.1	↓-6.0	最大潮位差
2/20 19:50	67.1	↓-6.0	最大潮位差
2/20 20:00	61.1	↓-6.0	最大潮位差
2/20 20:10	55.2	↓-5.9
2/20 20:20	49.5	↓-5.7
2/20 20:30	43.9	↓-5.6
2/20 20:40	38.5	↓-5.4
2/20 20:50	33.4	↓-5.1
2/20 21:00	28.5	↓-4.9
2/20 21:10	24.0	↓-4.5
2/20 21:20	19.8	↓-4.2
2/20 21:30	15.9	↓-3.9
2/20 21:40	12.5	↓-3.4
2/20 21:50	9.4	↓-3.1
2/20 22:00	6.9	↓-2.5
2/20 22:10	4.8	↓-2.1
2/20 22:20	3.1	↓-1.7
2/20 22:30	2.0	↓-1.1
2/20 22:40	1.3	↓-0.7	干潮
2/20 22:50	1.1	↓-0.2	干潮
2/20 23:00	1.4	↑0.3
2/20 23:10	2.2	↑0.8
2/20 23:20	3.5	↑1.3
2/20 23:30	5.2	↑1.7
2/20 23:40	7.4	↑2.2
2/20 23:50	10.0	↑2.6