20 (水)	07:15	00:52	19:09	13:11
	145cm	32cm	141cm	57cm
中潮 出 06:22 入 17:30 出 21:18 入 08:28

館山（千葉）2041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	36.8	↓-2.2
2/20 00:10	35.0	↓-1.8
2/20 00:20	33.6	↓-1.4
2/20 00:30	32.6	↓-1.0
2/20 00:40	31.9	↓-0.7
2/20 00:50	31.7	↓-0.2	干潮
2/20 01:00	31.8	↑0.1
2/20 01:10	32.4	↑0.6
2/20 01:20	33.3	↑0.9
2/20 01:30	34.6	↑1.3
2/20 01:40	36.3	↑1.7
2/20 01:50	38.3	↑2.0
2/20 02:00	40.6	↑2.3
2/20 02:10	43.3	↑2.7
2/20 02:20	46.2	↑2.9
2/20 02:30	49.5	↑3.3
2/20 02:40	52.9	↑3.4
2/20 02:50	56.6	↑3.7
2/20 03:00	60.6	↑4.0
2/20 03:10	64.7	↑4.1
2/20 03:20	68.9	↑4.2
2/20 03:30	73.3	↑4.4
2/20 03:40	77.8	↑4.5
2/20 03:50	82.3	↑4.5
2/20 04:00	86.9	↑4.6	最大潮位差
2/20 04:10	91.5	↑4.6	最大潮位差
2/20 04:20	96.1	↑4.6	最大潮位差
2/20 04:30	100.6	↑4.5
2/20 04:40	105.1	↑4.5
2/20 04:50	109.4	↑4.3
2/20 05:00	113.6	↑4.2
2/20 05:10	117.6	↑4.0
2/20 05:20	121.5	↑3.9
2/20 05:30	125.1	↑3.6
2/20 05:40	128.4	↑3.3
2/20 05:50	131.5	↑3.1
2/20 06:00	134.2	↑2.7
2/20 06:10	136.7	↑2.5
2/20 06:20	138.8	↑2.1
2/20 06:30	140.6	↑1.8
2/20 06:40	142.0	↑1.4
2/20 06:50	143.0	↑1.0
2/20 07:00	143.7	↑0.7
2/20 07:10	144.0	↑0.3	満潮
2/20 07:20	144.0	0
2/20 07:30	143.6	↓-0.4
2/20 07:40	142.8	↓-0.8
2/20 07:50	141.7	↓-1.1
2/20 08:00	140.3	↓-1.4
2/20 08:10	138.5	↓-1.8
2/20 08:20	136.4	↓-2.1
2/20 08:30	134.1	↓-2.3
2/20 08:40	131.5	↓-2.6
2/20 08:50	128.6	↓-2.9
2/20 09:00	125.6	↓-3.0
2/20 09:10	122.3	↓-3.3
2/20 09:20	118.9	↓-3.4
2/20 09:30	115.3	↓-3.6
2/20 09:40	111.6	↓-3.7
2/20 09:50	107.9	↓-3.7
2/20 10:00	104.0	↓-3.9
2/20 10:10	100.2	↓-3.8
2/20 10:20	96.3	↓-3.9
2/20 10:30	92.5	↓-3.8
2/20 10:40	88.7	↓-3.8
2/20 10:50	85.0	↓-3.7
2/20 11:00	81.5	↓-3.5
2/20 11:10	78.0	↓-3.5
2/20 11:20	74.8	↓-3.2
2/20 11:30	71.7	↓-3.1
2/20 11:40	68.9	↓-2.8
2/20 11:50	66.3	↓-2.6
2/20 12:00	64.0	↓-2.3
2/20 12:10	61.9	↓-2.1
2/20 12:20	60.2	↓-1.7
2/20 12:30	58.7	↓-1.5
2/20 12:40	57.6	↓-1.1
2/20 12:50	56.8	↓-0.8
2/20 13:00	56.3	↓-0.5
2/20 13:10	56.1	↓-0.2	干潮
2/20 13:20	56.3	↑0.2
2/20 13:30	56.8	↑0.5
2/20 13:40	57.6	↑0.8
2/20 13:50	58.7	↑1.1
2/20 14:00	60.1	↑1.4
2/20 14:10	61.8	↑1.7
2/20 14:20	63.7	↑1.9
2/20 14:30	65.9	↑2.2
2/20 14:40	68.4	↑2.5
2/20 14:50	71.0	↑2.6
2/20 15:00	73.9	↑2.9
2/20 15:10	76.9	↑3.0
2/20 15:20	80.1	↑3.2
2/20 15:30	83.4	↑3.3
2/20 15:40	86.8	↑3.4
2/20 15:50	90.3	↑3.5
2/20 16:00	93.9	↑3.6
2/20 16:10	97.6	↑3.7
2/20 16:20	101.2	↑3.6
2/20 16:30	104.8	↑3.6
2/20 16:40	108.4	↑3.6
2/20 16:50	111.9	↑3.5
2/20 17:00	115.4	↑3.5
2/20 17:10	118.7	↑3.3
2/20 17:20	121.8	↑3.1
2/20 17:30	124.8	↑3.0
2/20 17:40	127.6	↑2.8
2/20 17:50	130.1	↑2.5
2/20 18:00	132.4	↑2.3
2/20 18:10	134.4	↑2.0
2/20 18:20	136.2	↑1.8
2/20 18:30	137.6	↑1.4
2/20 18:40	138.7	↑1.1
2/20 18:50	139.5	↑0.8
2/20 19:00	139.9	↑0.4	満潮
2/20 19:10	140.0	↑0.1
2/20 19:20	139.8	↓-0.2
2/20 19:30	139.2	↓-0.6
2/20 19:40	138.2	↓-1.0
2/20 19:50	137.0	↓-1.2
2/20 20:00	135.4	↓-1.6
2/20 20:10	133.5	↓-1.9
2/20 20:20	131.3	↓-2.2
2/20 20:30	128.8	↓-2.5
2/20 20:40	126.0	↓-2.8
2/20 20:50	123.0	↓-3.0
2/20 21:00	119.8	↓-3.2
2/20 21:10	116.4	↓-3.4
2/20 21:20	112.8	↓-3.6
2/20 21:30	109.1	↓-3.7
2/20 21:40	105.2	↓-3.9
2/20 21:50	101.2	↓-4.0
2/20 22:00	97.2	↓-4.0
2/20 22:10	93.1	↓-4.1
2/20 22:20	89.0	↓-4.1
2/20 22:30	84.9	↓-4.1
2/20 22:40	80.9	↓-4.0
2/20 22:50	76.9	↓-4.0
2/20 23:00	73.1	↓-3.8
2/20 23:10	69.3	↓-3.8
2/20 23:20	65.8	↓-3.5
2/20 23:30	62.4	↓-3.4
2/20 23:40	59.2	↓-3.2
2/20 23:50	56.3	↓-2.9