20 (水)	06:15	12:09	18:07	-
	157cm	50cm	159cm	-
中潮 出 06:22 入 17:30 出 19:49 入 07:01

館山（千葉）2030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	17.1	↑0.3
2/20 00:10	17.9	↑0.8
2/20 00:20	19.1	↑1.2
2/20 00:30	20.9	↑1.8
2/20 00:40	23.0	↑2.1
2/20 00:50	25.6	↑2.6
2/20 01:00	28.6	↑3.0
2/20 01:10	32.0	↑3.4
2/20 01:20	35.8	↑3.8
2/20 01:30	39.9	↑4.1
2/20 01:40	44.3	↑4.4
2/20 01:50	49.0	↑4.7
2/20 02:00	53.9	↑4.9
2/20 02:10	59.0	↑5.1
2/20 02:20	64.3	↑5.3
2/20 02:30	69.8	↑5.5
2/20 02:40	75.3	↑5.5
2/20 02:50	81.0	↑5.7	最大潮位差
2/20 03:00	86.6	↑5.6
2/20 03:10	92.3	↑5.7	最大潮位差
2/20 03:20	97.9	↑5.6
2/20 03:30	103.5	↑5.6
2/20 03:40	108.9	↑5.4
2/20 03:50	114.2	↑5.3
2/20 04:00	119.3	↑5.1
2/20 04:10	124.3	↑5.0
2/20 04:20	128.9	↑4.6
2/20 04:30	133.3	↑4.4
2/20 04:40	137.4	↑4.1
2/20 04:50	141.1	↑3.7
2/20 05:00	144.5	↑3.4
2/20 05:10	147.5	↑3.0
2/20 05:20	150.1	↑2.6
2/20 05:30	152.2	↑2.1
2/20 05:40	154.0	↑1.8
2/20 05:50	155.2	↑1.2
2/20 06:00	156.1	↑0.9
2/20 06:10	156.5	↑0.4	満潮
2/20 06:20	156.4	↓-0.1
2/20 06:30	155.9	↓-0.5
2/20 06:40	155.0	↓-0.9
2/20 06:50	153.7	↓-1.3
2/20 07:00	151.9	↓-1.8
2/20 07:10	149.8	↓-2.1
2/20 07:20	147.2	↓-2.6
2/20 07:30	144.4	↓-2.8
2/20 07:40	141.2	↓-3.2
2/20 07:50	137.7	↓-3.5
2/20 08:00	133.9	↓-3.8
2/20 08:10	130.0	↓-3.9
2/20 08:20	125.8	↓-4.2
2/20 08:30	121.4	↓-4.4
2/20 08:40	116.9	↓-4.5
2/20 08:50	112.3	↓-4.6
2/20 09:00	107.6	↓-4.7
2/20 09:10	102.9	↓-4.7
2/20 09:20	98.2	↓-4.7
2/20 09:30	93.5	↓-4.7
2/20 09:40	88.9	↓-4.6
2/20 09:50	84.5	↓-4.4
2/20 10:00	80.1	↓-4.4
2/20 10:10	75.9	↓-4.2
2/20 10:20	72.0	↓-3.9
2/20 10:30	68.3	↓-3.7
2/20 10:40	64.8	↓-3.5
2/20 10:50	61.7	↓-3.1
2/20 11:00	58.9	↓-2.8
2/20 11:10	56.4	↓-2.5
2/20 11:20	54.3	↓-2.1
2/20 11:30	52.5	↓-1.8
2/20 11:40	51.2	↓-1.3
2/20 11:50	50.3	↓-0.9
2/20 12:00	49.7	↓-0.6	干潮
2/20 12:10	49.6	↓-0.1
2/20 12:20	49.9	↑0.3
2/20 12:30	50.7	↑0.8
2/20 12:40	51.8	↑1.1
2/20 12:50	53.3	↑1.5
2/20 13:00	55.2	↑1.9
2/20 13:10	57.5	↑2.3
2/20 13:20	60.1	↑2.6
2/20 13:30	63.0	↑2.9
2/20 13:40	66.2	↑3.2
2/20 13:50	69.7	↑3.5
2/20 14:00	73.5	↑3.8
2/20 14:10	77.5	↑4.0
2/20 14:20	81.7	↑4.2
2/20 14:30	86.0	↑4.3
2/20 14:40	90.5	↑4.5
2/20 14:50	95.1	↑4.6
2/20 15:00	99.7	↑4.6
2/20 15:10	104.4	↑4.7
2/20 15:20	109.1	↑4.7
2/20 15:30	113.8	↑4.7
2/20 15:40	118.4	↑4.6
2/20 15:50	122.9	↑4.5
2/20 16:00	127.2	↑4.3
2/20 16:10	131.4	↑4.2
2/20 16:20	135.4	↑4.0
2/20 16:30	139.2	↑3.8
2/20 16:40	142.7	↑3.5
2/20 16:50	145.9	↑3.2
2/20 17:00	148.7	↑2.8
2/20 17:10	151.3	↑2.6
2/20 17:20	153.4	↑2.1
2/20 17:30	155.2	↑1.8
2/20 17:40	156.5	↑1.3
2/20 17:50	157.5	↑1.0
2/20 18:00	158.0	↑0.5	満潮
2/20 18:10	158.0	0
2/20 18:20	157.6	↓-0.4
2/20 18:30	156.8	↓-0.8
2/20 18:40	155.5	↓-1.3
2/20 18:50	153.8	↓-1.7
2/20 19:00	151.7	↓-2.1
2/20 19:10	149.1	↓-2.6
2/20 19:20	146.2	↓-2.9
2/20 19:30	142.9	↓-3.3
2/20 19:40	139.2	↓-3.7
2/20 19:50	135.2	↓-4.0
2/20 20:00	131.0	↓-4.2
2/20 20:10	126.4	↓-4.6
2/20 20:20	121.7	↓-4.7
2/20 20:30	116.7	↓-5.0
2/20 20:40	111.5	↓-5.2
2/20 20:50	106.3	↓-5.2
2/20 21:00	100.9	↓-5.4
2/20 21:10	95.5	↓-5.4
2/20 21:20	90.0	↓-5.5
2/20 21:30	84.6	↓-5.4
2/20 21:40	79.2	↓-5.4
2/20 21:50	73.9	↓-5.3
2/20 22:00	68.8	↓-5.1
2/20 22:10	63.8	↓-5.0
2/20 22:20	59.0	↓-4.8
2/20 22:30	54.5	↓-4.5
2/20 22:40	50.2	↓-4.3
2/20 22:50	46.2	↓-4.0
2/20 23:00	42.6	↓-3.6
2/20 23:10	39.4	↓-3.2
2/20 23:20	36.5	↓-2.9
2/20 23:30	34.0	↓-2.5
2/20 23:40	32.0	↓-2.0
2/20 23:50	30.4	↓-1.6