20 (水)	05:26	11:27	17:34	23:54
	176cm	52cm	180cm	37cm
大潮 出 05:28 入 17:42 出 06:58 入 18:15

館山（千葉）2028年09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
9/20 00:00	50.6	↑1.8
9/20 00:10	52.9	↑2.3
9/20 00:20	55.6	↑2.7
9/20 00:30	58.7	↑3.1
9/20 00:40	62.2	↑3.5
9/20 00:50	65.9	↑3.7
9/20 01:00	70.1	↑4.2
9/20 01:10	74.4	↑4.3
9/20 01:20	79.1	↑4.7
9/20 01:30	83.9	↑4.8
9/20 01:40	89.0	↑5.1
9/20 01:50	94.1	↑5.1
9/20 02:00	99.5	↑5.4
9/20 02:10	104.8	↑5.3
9/20 02:20	110.3	↑5.5
9/20 02:30	115.7	↑5.4
9/20 02:40	121.1	↑5.4
9/20 02:50	126.4	↑5.3
9/20 03:00	131.7	↑5.3
9/20 03:10	136.8	↑5.1
9/20 03:20	141.7	↑4.9
9/20 03:30	146.4	↑4.7
9/20 03:40	150.8	↑4.4
9/20 03:50	155.0	↑4.2
9/20 04:00	158.9	↑3.9
9/20 04:10	162.4	↑3.5
9/20 04:20	165.5	↑3.1
9/20 04:30	168.3	↑2.8
9/20 04:40	170.6	↑2.3
9/20 04:50	172.5	↑1.9
9/20 05:00	173.9	↑1.4
9/20 05:10	174.9	↑1.0
9/20 05:20	175.4	↑0.5	満潮
9/20 05:30	175.4	0
9/20 05:40	174.9	↓-0.5
9/20 05:50	174.0	↓-0.9
9/20 06:00	172.6	↓-1.4
9/20 06:10	170.8	↓-1.8
9/20 06:20	168.5	↓-2.3
9/20 06:30	165.8	↓-2.7
9/20 06:40	162.7	↓-3.1
9/20 06:50	159.2	↓-3.5
9/20 07:00	155.4	↓-3.8
9/20 07:10	151.3	↓-4.1
9/20 07:20	146.9	↓-4.4
9/20 07:30	142.3	↓-4.6
9/20 07:40	137.4	↓-4.9
9/20 07:50	132.4	↓-5.0
9/20 08:00	127.2	↓-5.2
9/20 08:10	121.9	↓-5.3
9/20 08:20	116.6	↓-5.3
9/20 08:30	111.2	↓-5.4
9/20 08:40	105.9	↓-5.3
9/20 08:50	100.6	↓-5.3
9/20 09:00	95.3	↓-5.3
9/20 09:10	90.3	↓-5.0
9/20 09:20	85.3	↓-5.0
9/20 09:30	80.6	↓-4.7
9/20 09:40	76.2	↓-4.4
9/20 09:50	72.0	↓-4.2
9/20 10:00	68.1	↓-3.9
9/20 10:10	64.5	↓-3.6
9/20 10:20	61.4	↓-3.1
9/20 10:30	58.6	↓-2.8
9/20 10:40	56.3	↓-2.3
9/20 10:50	54.4	↓-1.9
9/20 11:00	52.9	↓-1.5
9/20 11:10	51.9	↓-1.0
9/20 11:20	51.4	↓-0.5	干潮
9/20 11:30	51.3	↓-0.1
9/20 11:40	51.8	↑0.5
9/20 11:50	52.7	↑0.9
9/20 12:00	54.0	↑1.3
9/20 12:10	55.9	↑1.9
9/20 12:20	58.1	↑2.2
9/20 12:30	60.8	↑2.7
9/20 12:40	63.8	↑3.0
9/20 12:50	67.2	↑3.4
9/20 13:00	71.0	↑3.8
9/20 13:10	75.1	↑4.1
9/20 13:20	79.5	↑4.4
9/20 13:30	84.1	↑4.6
9/20 13:40	88.9	↑4.8
9/20 13:50	93.9	↑5.0
9/20 14:00	99.1	↑5.2
9/20 14:10	104.3	↑5.2
9/20 14:20	109.7	↑5.4
9/20 14:30	115.1	↑5.4
9/20 14:40	120.5	↑5.4
9/20 14:50	125.9	↑5.4
9/20 15:00	131.2	↑5.3
9/20 15:10	136.3	↑5.1
9/20 15:20	141.4	↑5.1
9/20 15:30	146.3	↑4.9
9/20 15:40	150.9	↑4.6
9/20 15:50	155.3	↑4.4
9/20 16:00	159.4	↑4.1
9/20 16:10	163.2	↑3.8
9/20 16:20	166.7	↑3.5
9/20 16:30	169.8	↑3.1
9/20 16:40	172.4	↑2.6
9/20 16:50	174.7	↑2.3
9/20 17:00	176.5	↑1.8
9/20 17:10	177.9	↑1.4
9/20 17:20	178.8	↑0.9
9/20 17:30	179.2	↑0.4	満潮
9/20 17:40	179.1	↓-0.1
9/20 17:50	178.5	↓-0.6
9/20 18:00	177.5	↓-1.0
9/20 18:10	176.0	↓-1.5
9/20 18:20	174.0	↓-2.0
9/20 18:30	171.5	↓-2.5
9/20 18:40	168.7	↓-2.8
9/20 18:50	165.4	↓-3.3
9/20 19:00	161.7	↓-3.7
9/20 19:10	157.7	↓-4.0
9/20 19:20	153.3	↓-4.4
9/20 19:30	148.7	↓-4.6
9/20 19:40	143.7	↓-5.0
9/20 19:50	138.5	↓-5.2
9/20 20:00	133.1	↓-5.4
9/20 20:10	127.5	↓-5.6
9/20 20:20	121.8	↓-5.7
9/20 20:30	116.0	↓-5.8
9/20 20:40	110.2	↓-5.8
9/20 20:50	104.3	↓-5.9	最大潮位差
9/20 21:00	98.4	↓-5.9	最大潮位差
9/20 21:10	92.6	↓-5.8
9/20 21:20	86.9	↓-5.7
9/20 21:30	81.4	↓-5.5
9/20 21:40	76.0	↓-5.4
9/20 21:50	70.8	↓-5.2
9/20 22:00	65.9	↓-4.9
9/20 22:10	61.3	↓-4.6
9/20 22:20	57.0	↓-4.3
9/20 22:30	53.0	↓-4.0
9/20 22:40	49.5	↓-3.5
9/20 22:50	46.3	↓-3.2
9/20 23:00	43.5	↓-2.8
9/20 23:10	41.2	↓-2.3
9/20 23:20	39.4	↓-1.8
9/20 23:30	38.0	↓-1.4
9/20 23:40	37.1	↓-0.9
9/20 23:50	36.7	↓-0.4	干潮