20 (土)	05:19	12:06	18:55	-
	162cm	0cm	154cm	-
中潮 出 05:05 入 18:18 出 21:00 入 06:14 潮干狩り ◎ 09:55～14:19

館山（千葉）2030年04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
4/20 00:00	71.0	↑0.7
4/20 00:10	72.1	↑1.1
4/20 00:20	73.5	↑1.4
4/20 00:30	75.3	↑1.8
4/20 00:40	77.4	↑2.1
4/20 00:50	79.8	↑2.4
4/20 01:00	82.5	↑2.7
4/20 01:10	85.5	↑3.0
4/20 01:20	88.7	↑3.2
4/20 01:30	92.1	↑3.4
4/20 01:40	95.8	↑3.7
4/20 01:50	99.6	↑3.8
4/20 02:00	103.5	↑3.9
4/20 02:10	107.5	↑4.0
4/20 02:20	111.6	↑4.1
4/20 02:30	115.8	↑4.2
4/20 02:40	119.9	↑4.1
4/20 02:50	124.0	↑4.1
4/20 03:00	128.1	↑4.1
4/20 03:10	132.1	↑4.0
4/20 03:20	135.9	↑3.8
4/20 03:30	139.6	↑3.7
4/20 03:40	143.1	↑3.5
4/20 03:50	146.4	↑3.3
4/20 04:00	149.5	↑3.1
4/20 04:10	152.2	↑2.7
4/20 04:20	154.7	↑2.5
4/20 04:30	156.8	↑2.1
4/20 04:40	158.6	↑1.8
4/20 04:50	160.0	↑1.4
4/20 05:00	161.0	↑1.0
4/20 05:10	161.5	↑0.5	満潮
4/20 05:20	161.7	↑0.2
4/20 05:30	161.4	↓-0.3
4/20 05:40	160.7	↓-0.7
4/20 05:50	159.5	↓-1.2
4/20 06:00	157.8	↓-1.7
4/20 06:10	155.8	↓-2.0
4/20 06:20	153.3	↓-2.5
4/20 06:30	150.3	↓-3.0
4/20 06:40	147.0	↓-3.3
4/20 06:50	143.2	↓-3.8
4/20 07:00	139.1	↓-4.1
4/20 07:10	134.6	↓-4.5
4/20 07:20	129.8	↓-4.8
4/20 07:30	124.7	↓-5.1
4/20 07:40	119.3	↓-5.4
4/20 07:50	113.7	↓-5.6
4/20 08:00	107.9	↓-5.8
4/20 08:10	101.9	↓-6.0
4/20 08:20	95.8	↓-6.1
4/20 08:30	89.6	↓-6.2
4/20 08:40	83.3	↓-6.3	最大潮位差
4/20 08:50	77.0	↓-6.3	最大潮位差
4/20 09:00	70.7	↓-6.3	最大潮位差
4/20 09:10	64.4	↓-6.3	最大潮位差
4/20 09:20	58.3	↓-6.1
4/20 09:30	52.3	↓-6.0
4/20 09:40	46.4	↓-5.9
4/20 09:50	40.8	↓-5.6
4/20 10:00	35.3	↓-5.5
4/20 10:10	30.2	↓-5.1
4/20 10:20	25.3	↓-4.9
4/20 10:30	20.8	↓-4.5
4/20 10:40	16.7	↓-4.1
4/20 10:50	13.0	↓-3.7
4/20 11:00	9.6	↓-3.4
4/20 11:10	6.7	↓-2.9
4/20 11:20	4.3	↓-2.4
4/20 11:30	2.4	↓-1.9
4/20 11:40	0.9	↓-1.5
4/20 11:50	-0.1	↓-1.0
4/20 12:00	-0.6	↓-0.5	干潮
4/20 12:10	-0.6	0
4/20 12:20	0.0	↑0.6
4/20 12:30	0.9	0
4/20 12:40	2.4	↑1.5
4/20 12:50	4.4	↑2.0
4/20 13:00	6.8	↑2.4
4/20 13:10	9.6	↑2.8
4/20 13:20	12.8	↑3.2
4/20 13:30	16.4	↑3.6
4/20 13:40	20.4	↑4.0
4/20 13:50	24.7	↑4.3
4/20 14:00	29.3	↑4.6
4/20 14:10	34.2	↑4.9
4/20 14:20	39.4	↑5.2
4/20 14:30	44.7	↑5.3
4/20 14:40	50.3	↑5.6
4/20 14:50	56.0	↑5.7
4/20 15:00	61.8	↑5.8
4/20 15:10	67.6	↑5.8
4/20 15:20	73.6	↑6.0
4/20 15:30	79.5	↑5.9
4/20 15:40	85.5	↑6.0
4/20 15:50	91.3	↑5.8
4/20 16:00	97.1	↑5.8
4/20 16:10	102.7	↑5.6
4/20 16:20	108.2	↑5.5
4/20 16:30	113.5	↑5.3
4/20 16:40	118.6	↑5.1
4/20 16:50	123.4	↑4.8
4/20 17:00	127.9	↑4.5
4/20 17:10	132.2	↑4.3
4/20 17:20	136.0	↑3.8
4/20 17:30	139.6	↑3.6
4/20 17:40	142.7	↑3.1
4/20 17:50	145.5	↑2.8
4/20 18:00	147.9	↑2.4
4/20 18:10	149.9	↑2.0
4/20 18:20	151.4	↑1.5
4/20 18:30	152.6	↑1.2
4/20 18:40	153.4	↑0.8
4/20 18:50	153.7	↑0.3	満潮
4/20 19:00	153.6	↓-0.1
4/20 19:10	153.2	↓-0.4
4/20 19:20	152.4	↓-0.8
4/20 19:30	151.2	↓-1.2
4/20 19:40	149.8	↓-1.4
4/20 19:50	147.9	↓-1.9
4/20 20:00	145.8	↓-2.1
4/20 20:10	143.5	↓-2.3
4/20 20:20	140.9	↓-2.6
4/20 20:30	138.1	↓-2.8
4/20 20:40	135.1	↓-3.0
4/20 20:50	131.9	↓-3.2
4/20 21:00	128.6	↓-3.3
4/20 21:10	125.2	↓-3.4
4/20 21:20	121.8	↓-3.4
4/20 21:30	118.3	↓-3.5
4/20 21:40	114.8	↓-3.5
4/20 21:50	111.4	↓-3.4
4/20 22:00	108.0	↓-3.4
4/20 22:10	104.7	↓-3.3
4/20 22:20	101.6	↓-3.1
4/20 22:30	98.5	↓-3.1
4/20 22:40	95.7	↓-2.8
4/20 22:50	93.1	↓-2.6
4/20 23:00	90.7	↓-2.4
4/20 23:10	88.6	↓-2.1
4/20 23:20	86.7	↓-1.9
4/20 23:30	85.2	↓-1.5
4/20 23:40	83.9	↓-1.3
4/20 23:50	82.9	↓-1.0