20 (日)	03:49	10:05	16:33	22:20
	179cm	28cm	182cm	59cm
大潮 出 05:03 入 18:19 出 03:52 入 16:57 潮干狩り ○ 08:39～11:30

船橋（千葉）2031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	94.4	↑4.8
4/20 00:10	99.3	↑4.9
4/20 00:20	104.4	↑5.1
4/20 00:30	109.6	↑5.2
4/20 00:40	114.8	↑5.2
4/20 00:50	120.0	↑5.2
4/20 01:00	125.2	↑5.2
4/20 01:10	130.3	↑5.1
4/20 01:20	135.4	↑5.1
4/20 01:30	140.2	↑4.8
4/20 01:40	145.0	↑4.8
4/20 01:50	149.5	↑4.5
4/20 02:00	153.8	↑4.3
4/20 02:10	157.8	↑4.0
4/20 02:20	161.5	↑3.7
4/20 02:30	164.9	↑3.4
4/20 02:40	168.0	↑3.1
4/20 02:50	170.7	↑2.7
4/20 03:00	173.0	↑2.3
4/20 03:10	174.9	↑1.9
4/20 03:20	176.4	↑1.5
4/20 03:30	177.4	↑1.0
4/20 03:40	178.0	↑0.6	満潮
4/20 03:50	178.2	↑0.2
4/20 04:00	177.8	↓-0.4
4/20 04:10	177.0	↓-0.8
4/20 04:20	175.7	↓-1.3
4/20 04:30	174.0	↓-1.7
4/20 04:40	171.7	↓-2.3
4/20 04:50	169.0	↓-2.7
4/20 05:00	165.9	↓-3.1
4/20 05:10	162.3	↓-3.6
4/20 05:20	158.4	↓-3.9
4/20 05:30	154.0	↓-4.4
4/20 05:40	149.3	↓-4.7
4/20 05:50	144.2	↓-5.1
4/20 06:00	138.8	↓-5.4
4/20 06:10	133.2	↓-5.6
4/20 06:20	127.3	↓-5.9
4/20 06:30	121.3	↓-6.0
4/20 06:40	115.0	↓-6.3
4/20 06:50	108.7	↓-6.3
4/20 07:00	102.4	↓-6.3
4/20 07:10	96.0	↓-6.4	最大潮位差
4/20 07:20	89.6	↓-6.4	最大潮位差
4/20 07:30	83.4	↓-6.2
4/20 07:40	77.2	↓-6.2
4/20 07:50	71.3	↓-5.9
4/20 08:00	65.5	↓-5.8
4/20 08:10	60.1	↓-5.4
4/20 08:20	54.9	↓-5.2
4/20 08:30	50.1	↓-4.8
4/20 08:40	45.7	↓-4.4
4/20 08:50	41.7	↓-4.0
4/20 09:00	38.1	↓-3.6
4/20 09:10	35.0	↓-3.1
4/20 09:20	32.4	↓-2.6
4/20 09:30	30.3	↓-2.1
4/20 09:40	28.8	↓-1.5
4/20 09:50	27.8	↓-1.0
4/20 10:00	27.3	↓-0.5	干潮
4/20 10:10	27.4	↑0.1
4/20 10:20	28.0	↑0.6
4/20 10:30	29.2	↑1.2
4/20 10:40	30.8	↑1.6
4/20 10:50	33.0	↑2.2
4/20 11:00	35.7	↑2.7
4/20 11:10	38.8	↑3.1
4/20 11:20	42.4	↑3.6
4/20 11:30	46.4	↑4.0
4/20 11:40	50.8	↑4.4
4/20 11:50	55.5	↑4.7
4/20 12:00	60.5	↑5.0
4/20 12:10	65.8	↑5.3
4/20 12:20	71.4	↑5.6
4/20 12:30	77.2	↑5.8
4/20 12:40	83.1	↑5.9
4/20 12:50	89.2	↑6.1
4/20 13:00	95.3	↑6.1
4/20 13:10	101.5	↑6.2
4/20 13:20	107.7	↑6.2
4/20 13:30	113.8	↑6.1
4/20 13:40	119.9	↑6.1
4/20 13:50	125.9	↑6.0
4/20 14:00	131.8	↑5.9
4/20 14:10	137.4	↑5.6
4/20 14:20	142.9	↑5.5
4/20 14:30	148.1	↑5.2
4/20 14:40	153.0	↑4.9
4/20 14:50	157.6	↑4.6
4/20 15:00	161.9	↑4.3
4/20 15:10	165.8	↑3.9
4/20 15:20	169.3	↑3.5
4/20 15:30	172.4	↑3.1
4/20 15:40	175.1	↑2.7
4/20 15:50	177.4	↑2.3
4/20 16:00	179.1	↑1.7
4/20 16:10	180.4	↑1.3
4/20 16:20	181.3	↑0.9
4/20 16:30	181.6	↑0.3	満潮
4/20 16:40	181.5	↓-0.1
4/20 16:50	180.8	↓-0.7
4/20 17:00	179.7	↓-1.1
4/20 17:10	178.1	↓-1.6
4/20 17:20	176.0	↓-2.1
4/20 17:30	173.5	↓-2.5
4/20 17:40	170.5	↓-3.0
4/20 17:50	167.1	↓-3.4
4/20 18:00	163.4	↓-3.7
4/20 18:10	159.3	↓-4.1
4/20 18:20	154.8	↓-4.5
4/20 18:30	150.1	↓-4.7
4/20 18:40	145.1	↓-5.0
4/20 18:50	139.9	↓-5.2
4/20 19:00	134.6	↓-5.3
4/20 19:10	129.1	↓-5.5
4/20 19:20	123.5	↓-5.6
4/20 19:30	117.9	↓-5.6
4/20 19:40	112.3	↓-5.6
4/20 19:50	106.8	↓-5.5
4/20 20:00	101.3	↓-5.5
4/20 20:10	96.1	↓-5.2
4/20 20:20	91.0	↓-5.1
4/20 20:30	86.2	↓-4.8
4/20 20:40	81.6	↓-4.6
4/20 20:50	77.4	↓-4.2
4/20 21:00	73.5	↓-3.9
4/20 21:10	70.0	↓-3.5
4/20 21:20	67.0	↓-3.0
4/20 21:30	64.3	↓-2.7
4/20 21:40	62.2	↓-2.1
4/20 21:50	60.5	↓-1.7
4/20 22:00	59.3	↓-1.2
4/20 22:10	58.6	↓-0.7	干潮
4/20 22:20	58.4	↓-0.2	干潮
4/20 22:30	58.7	↑0.3
4/20 22:40	59.5	↑0.8
4/20 22:50	60.8	↑1.3
4/20 23:00	62.6	↑1.8
4/20 23:10	64.8	↑2.2
4/20 23:20	67.5	↑2.7
4/20 23:30	70.6	↑3.1
4/20 23:40	74.1	↑3.5
4/20 23:50	77.9	↑3.8