20 (土)	06:21	00:44	20:08	13:16
	168cm	83cm	149cm	8cm
中潮 出 05:04 入 18:19 出 22:24 入 07:10 潮干狩り ◎ 11:08～15:27

第一海堡（千葉）2041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	85.2	↓-1.7
4/20 00:10	83.9	↓-1.3
4/20 00:20	83.0	↓-0.9
4/20 00:30	82.3	↓-0.7
4/20 00:40	82.0	↓-0.3	干潮
4/20 00:50	82.1	↑0.1
4/20 01:00	82.5	↑0.4
4/20 01:10	83.3	↑0.8
4/20 01:20	84.4	↑1.1
4/20 01:30	85.9	↑1.5
4/20 01:40	87.6	↑1.7
4/20 01:50	89.7	↑2.1
4/20 02:00	92.1	↑2.4
4/20 02:10	94.8	↑2.7
4/20 02:20	97.7	↑2.9
4/20 02:30	100.8	↑3.1
4/20 02:40	104.2	↑3.4
4/20 02:50	107.7	↑3.5
4/20 03:00	111.4	↑3.7
4/20 03:10	115.2	↑3.8
4/20 03:20	119.0	↑3.8
4/20 03:30	123.0	↑4.0
4/20 03:40	126.9	↑3.9
4/20 03:50	130.9	↑4.0
4/20 04:00	134.8	↑3.9
4/20 04:10	138.6	↑3.8
4/20 04:20	142.3	↑3.7
4/20 04:30	145.8	↑3.5
4/20 04:40	149.2	↑3.4
4/20 04:50	152.4	↑3.2
4/20 05:00	155.3	↑2.9
4/20 05:10	158.0	↑2.7
4/20 05:20	160.3	↑2.3
4/20 05:30	162.4	↑2.1
4/20 05:40	164.1	↑1.7
4/20 05:50	165.4	↑1.3
4/20 06:00	166.4	↑1.0
4/20 06:10	167.0	↑0.6
4/20 06:20	167.2	↑0.2	満潮
4/20 06:30	167.0	↓-0.2
4/20 06:40	166.3	↓-0.7
4/20 06:50	165.3	↓-1.0
4/20 07:00	163.8	↓-1.5
4/20 07:10	161.9	↓-1.9
4/20 07:20	159.5	↓-2.4
4/20 07:30	156.8	↓-2.7
4/20 07:40	153.7	↓-3.1
4/20 07:50	150.2	↓-3.5
4/20 08:00	146.3	↓-3.9
4/20 08:10	142.1	↓-4.2
4/20 08:20	137.6	↓-4.5
4/20 08:30	132.8	↓-4.8
4/20 08:40	127.7	↓-5.1
4/20 08:50	122.3	↓-5.4
4/20 09:00	116.8	↓-5.5
4/20 09:10	111.1	↓-5.7
4/20 09:20	105.2	↓-5.9
4/20 09:30	99.2	↓-6.0
4/20 09:40	93.1	↓-6.1	最大潮位差
4/20 09:50	87.0	↓-6.1	最大潮位差
4/20 10:00	80.9	↓-6.1	最大潮位差
4/20 10:10	74.9	↓-6.0
4/20 10:20	68.8	↓-6.1	最大潮位差
4/20 10:30	62.9	↓-5.9
4/20 10:40	57.2	↓-5.7
4/20 10:50	51.6	↓-5.6
4/20 11:00	46.2	↓-5.4
4/20 11:10	41.1	↓-5.1
4/20 11:20	36.2	↓-4.9
4/20 11:30	31.6	↓-4.6
4/20 11:40	27.4	↓-4.2
4/20 11:50	23.5	↓-3.9
4/20 12:00	20.0	↓-3.5
4/20 12:10	16.9	↓-3.1
4/20 12:20	14.1	↓-2.8
4/20 12:30	11.9	↓-2.2
4/20 12:40	10.0	↓-1.9
4/20 12:50	8.6	↓-1.4
4/20 13:00	7.7	↓-0.9
4/20 13:10	7.2	↓-0.5	干潮
4/20 13:20	7.2	0
4/20 13:30	7.7	↑0.5
4/20 13:40	8.5	↑0.8
4/20 13:50	9.9	↑1.4
4/20 14:00	11.7	↑1.8
4/20 14:10	13.9	↑2.2
4/20 14:20	16.5	↑2.6
4/20 14:30	19.4	↑2.9
4/20 14:40	22.8	↑3.4
4/20 14:50	26.5	↑3.7
4/20 15:00	30.5	↑4.0
4/20 15:10	34.8	↑4.3
4/20 15:20	39.3	↑4.5
4/20 15:30	44.1	↑4.8
4/20 15:40	49.1	↑5.0
4/20 15:50	54.2	↑5.1
4/20 16:00	59.5	↑5.3
4/20 16:10	64.9	↑5.4
4/20 16:20	70.3	↑5.4
4/20 16:30	75.8	↑5.5
4/20 16:40	81.3	↑5.5
4/20 16:50	86.7	↑5.4
4/20 17:00	92.1	↑5.4
4/20 17:10	97.3	↑5.2
4/20 17:20	102.5	↑5.2
4/20 17:30	107.5	↑5.0
4/20 17:40	112.3	↑4.8
4/20 17:50	116.8	↑4.5
4/20 18:00	121.2	↑4.4
4/20 18:10	125.2	↑4.0
4/20 18:20	129.0	↑3.8
4/20 18:30	132.5	↑3.5
4/20 18:40	135.7	↑3.2
4/20 18:50	138.5	↑2.8
4/20 19:00	141.1	↑2.6
4/20 19:10	143.2	↑2.1
4/20 19:20	145.0	↑1.8
4/20 19:30	146.5	↑1.5
4/20 19:40	147.6	↑1.1
4/20 19:50	148.4	↑0.8
4/20 20:00	148.8	↑0.4	満潮
4/20 20:10	148.8	0
4/20 20:20	148.6	↓-0.2
4/20 20:30	148.0	↓-0.6
4/20 20:40	147.1	↓-0.9
4/20 20:50	146.0	↓-1.1
4/20 21:00	144.5	↓-1.5
4/20 21:10	142.8	↓-1.7
4/20 21:20	141.0	↓-1.8
4/20 21:30	138.9	↓-2.1
4/20 21:40	136.6	↓-2.3
4/20 21:50	134.2	↓-2.4
4/20 22:00	131.6	↓-2.6
4/20 22:10	129.0	↓-2.6
4/20 22:20	126.3	↓-2.7
4/20 22:30	123.5	↓-2.8
4/20 22:40	120.8	↓-2.7
4/20 22:50	118.0	↓-2.8
4/20 23:00	115.4	↓-2.6
4/20 23:10	112.7	↓-2.7
4/20 23:20	110.2	↓-2.5
4/20 23:30	107.8	↓-2.4
4/20 23:40	105.5	↓-2.3
4/20 23:50	103.4	↓-2.1