20 (日)	04:37	10:56	17:14	23:01
	159cm	16cm	153cm	50cm
大潮 出 05:04 入 18:18 出 05:01 入 18:33 潮干狩り ◎ 09:17～12:35

館山（千葉）2042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	54.6	↑3.6
4/20 00:10	58.4	↑3.8
4/20 00:20	62.5	↑4.1
4/20 00:30	66.8	↑4.3
4/20 00:40	71.4	↑4.6
4/20 00:50	76.1	↑4.7
4/20 01:00	80.9	↑4.8
4/20 01:10	85.9	↑5.0
4/20 01:20	90.9	↑5.0
4/20 01:30	96.0	↑5.1
4/20 01:40	101.1	↑5.1
4/20 01:50	106.2	↑5.1
4/20 02:00	111.3	↑5.1
4/20 02:10	116.2	↑4.9
4/20 02:20	121.0	↑4.8
4/20 02:30	125.7	↑4.7
4/20 02:40	130.2	↑4.5
4/20 02:50	134.4	↑4.2
4/20 03:00	138.4	↑4.0
4/20 03:10	142.1	↑3.7
4/20 03:20	145.5	↑3.4
4/20 03:30	148.6	↑3.1
4/20 03:40	151.2	↑2.6
4/20 03:50	153.5	↑2.3
4/20 04:00	155.4	↑1.9
4/20 04:10	156.8	↑1.4
4/20 04:20	157.8	↑1.0
4/20 04:30	158.3	↑0.5	満潮
4/20 04:40	158.3	0
4/20 04:50	157.9	↓-0.4
4/20 05:00	156.9	↓-1.0
4/20 05:10	155.6	↓-1.3
4/20 05:20	153.7	↓-1.9
4/20 05:30	151.4	↓-2.3
4/20 05:40	148.7	↓-2.7
4/20 05:50	145.5	↓-3.2
4/20 06:00	142.0	↓-3.5
4/20 06:10	138.1	↓-3.9
4/20 06:20	133.8	↓-4.3
4/20 06:30	129.2	↓-4.6
4/20 06:40	124.4	↓-4.8
4/20 06:50	119.3	↓-5.1
4/20 07:00	113.9	↓-5.4
4/20 07:10	108.4	↓-5.5
4/20 07:20	102.8	↓-5.6
4/20 07:30	97.0	↓-5.8
4/20 07:40	91.1	↓-5.9	最大潮位差
4/20 07:50	85.2	↓-5.9	最大潮位差
4/20 08:00	79.3	↓-5.9	最大潮位差
4/20 08:10	73.5	↓-5.8
4/20 08:20	67.7	↓-5.8
4/20 08:30	62.1	↓-5.6
4/20 08:40	56.6	↓-5.5
4/20 08:50	51.3	↓-5.3
4/20 09:00	46.3	↓-5.0
4/20 09:10	41.5	↓-4.8
4/20 09:20	37.1	↓-4.4
4/20 09:30	32.9	↓-4.2
4/20 09:40	29.2	↓-3.7
4/20 09:50	25.9	↓-3.3
4/20 10:00	22.9	↓-3.0
4/20 10:10	20.5	↓-2.4
4/20 10:20	18.5	↓-2.0
4/20 10:30	17.0	↓-1.5
4/20 10:40	16.0	↓-1.0
4/20 10:50	15.5	↓-0.5	干潮
4/20 11:00	15.5	0
4/20 11:10	16.0	↑0.5
4/20 11:20	17.0	↑1.0
4/20 11:30	18.5	↑1.5
4/20 11:40	20.4	↑1.9
4/20 11:50	22.8	↑2.4
4/20 12:00	25.7	↑2.9
4/20 12:10	28.9	↑3.2
4/20 12:20	32.5	↑3.6
4/20 12:30	36.5	↑4.0
4/20 12:40	40.8	↑4.3
4/20 12:50	45.4	↑4.6
4/20 13:00	50.2	↑4.8
4/20 13:10	55.2	↑5.0
4/20 13:20	60.5	↑5.3
4/20 13:30	65.8	↑5.3
4/20 13:40	71.3	↑5.5
4/20 13:50	76.9	↑5.6
4/20 14:00	82.5	↑5.6
4/20 14:10	88.2	↑5.7
4/20 14:20	93.8	↑5.6
4/20 14:30	99.3	↑5.5
4/20 14:40	104.7	↑5.4
4/20 14:50	110.0	↑5.3
4/20 15:00	115.1	↑5.1
4/20 15:10	120.0	↑4.9
4/20 15:20	124.7	↑4.7
4/20 15:30	129.0	↑4.3
4/20 15:40	133.1	↑4.1
4/20 15:50	136.8	↑3.7
4/20 16:00	140.2	↑3.4
4/20 16:10	143.2	↑3.0
4/20 16:20	145.8	↑2.6
4/20 16:30	148.0	↑2.2
4/20 16:40	149.7	↑1.7
4/20 16:50	151.0	↑1.3
4/20 17:00	151.8	↑0.8
4/20 17:10	152.2	↑0.4	満潮
4/20 17:20	152.1	↓-0.1
4/20 17:30	151.6	↓-0.5
4/20 17:40	150.7	↓-0.9
4/20 17:50	149.3	↓-1.4
4/20 18:00	147.5	↓-1.8
4/20 18:10	145.3	↓-2.2
4/20 18:20	142.8	↓-2.5
4/20 18:30	139.9	↓-2.9
4/20 18:40	136.8	↓-3.1
4/20 18:50	133.3	↓-3.5
4/20 19:00	129.5	↓-3.8
4/20 19:10	125.6	↓-3.9
4/20 19:20	121.4	↓-4.2
4/20 19:30	117.1	↓-4.3
4/20 19:40	112.7	↓-4.4
4/20 19:50	108.2	↓-4.5
4/20 20:00	103.6	↓-4.6
4/20 20:10	99.0	↓-4.6
4/20 20:20	94.4	↓-4.6
4/20 20:30	89.8	↓-4.6
4/20 20:40	85.4	↓-4.4
4/20 20:50	81.0	↓-4.4
4/20 21:00	76.8	↓-4.2
4/20 21:10	72.8	↓-4.0
4/20 21:20	69.0	↓-3.8
4/20 21:30	65.5	↓-3.5
4/20 21:40	62.2	↓-3.3
4/20 21:50	59.3	↓-2.9
4/20 22:00	56.7	↓-2.6
4/20 22:10	54.4	↓-2.3
4/20 22:20	52.6	↓-1.8
4/20 22:30	51.1	↓-1.5
4/20 22:40	50.0	↓-1.1
4/20 22:50	49.3	↓-0.7
4/20 23:00	49.1	↓-0.2	干潮
4/20 23:10	49.3	↑0.2
4/20 23:20	49.9	↑0.6
4/20 23:30	51.0	↑1.1
4/20 23:40	52.4	↑1.4
4/20 23:50	54.3	↑1.9