20 (火)	03:51	10:13	16:37	22:25
	144cm	28cm	145cm	57cm
大潮 出 05:04 入 18:18 出 17:47 入 04:11 潮干狩り ○ 08:56～11:28

岩井袋（千葉）2027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	76.8	↑3.5
4/20 00:10	80.5	↑3.7
4/20 00:20	84.3	↑3.8
4/20 00:30	88.2	↑3.9
4/20 00:40	92.2	↑4.0
4/20 00:50	96.2	↑4.0
4/20 01:00	100.2	↑4.0
4/20 01:10	104.2	↑4.0
4/20 01:20	108.2	↑4.0
4/20 01:30	112.1	↑3.9
4/20 01:40	115.8	↑3.7
4/20 01:50	119.5	↑3.7
4/20 02:00	122.9	↑3.4
4/20 02:10	126.2	↑3.3
4/20 02:20	129.2	↑3.0
4/20 02:30	132.0	↑2.8
4/20 02:40	134.5	↑2.5
4/20 02:50	136.8	↑2.3
4/20 03:00	138.7	↑1.9
4/20 03:10	140.3	↑1.6
4/20 03:20	141.6	↑1.3
4/20 03:30	142.5	↑0.9
4/20 03:40	143.0	↑0.5
4/20 03:50	143.2	↑0.2	満潮
4/20 04:00	143.0	↓-0.2
4/20 04:10	142.4	↓-0.6
4/20 04:20	141.5	↓-0.9
4/20 04:30	140.1	↓-1.4
4/20 04:40	138.5	↓-1.6
4/20 04:50	136.4	↓-2.1
4/20 05:00	134.1	↓-2.3
4/20 05:10	131.4	↓-2.7
4/20 05:20	128.4	↓-3.0
4/20 05:30	125.1	↓-3.3
4/20 05:40	121.5	↓-3.6
4/20 05:50	117.7	↓-3.8
4/20 06:00	113.6	↓-4.1
4/20 06:10	109.4	↓-4.2
4/20 06:20	105.0	↓-4.4
4/20 06:30	100.5	↓-4.5
4/20 06:40	95.8	↓-4.7
4/20 06:50	91.1	↓-4.7
4/20 07:00	86.3	↓-4.8
4/20 07:10	81.6	↓-4.7
4/20 07:20	76.8	↓-4.8
4/20 07:30	72.1	↓-4.7
4/20 07:40	67.5	↓-4.6
4/20 07:50	63.0	↓-4.5
4/20 08:00	58.7	↓-4.3
4/20 08:10	54.5	↓-4.2
4/20 08:20	50.6	↓-3.9
4/20 08:30	46.8	↓-3.8
4/20 08:40	43.4	↓-3.4
4/20 08:50	40.2	↓-3.2
4/20 09:00	37.4	↓-2.8
4/20 09:10	34.8	↓-2.6
4/20 09:20	32.6	↓-2.2
4/20 09:30	30.8	↓-1.8
4/20 09:40	29.4	↓-1.4
4/20 09:50	28.3	↓-1.1
4/20 10:00	27.7	↓-0.6
4/20 10:10	27.4	↓-0.3	干潮
4/20 10:20	27.5	↑0.1
4/20 10:30	28.0	↑0.5
4/20 10:40	29.0	↑1.0
4/20 10:50	30.3	↑1.3
4/20 11:00	32.0	↑1.7
4/20 11:10	34.0	↑2.0
4/20 11:20	36.4	↑2.4
4/20 11:30	39.2	↑2.8
4/20 11:40	42.3	↑3.1
4/20 11:50	45.7	↑3.4
4/20 12:00	49.3	↑3.6
4/20 12:10	53.2	↑3.9
4/20 12:20	57.3	↑4.1
4/20 12:30	61.6	↑4.3
4/20 12:40	66.1	↑4.5
4/20 12:50	70.7	↑4.6
4/20 13:00	75.4	↑4.7
4/20 13:10	80.2	↑4.8
4/20 13:20	85.1	↑4.9	最大潮位差
4/20 13:30	89.9	↑4.8
4/20 13:40	94.7	↑4.8
4/20 13:50	99.4	↑4.7
4/20 14:00	104.1	↑4.7
4/20 14:10	108.6	↑4.5
4/20 14:20	113.0	↑4.4
4/20 14:30	117.2	↑4.2
4/20 14:40	121.1	↑3.9
4/20 14:50	124.9	↑3.8
4/20 15:00	128.3	↑3.4
4/20 15:10	131.5	↑3.2
4/20 15:20	134.4	↑2.9
4/20 15:30	137.0	↑2.6
4/20 15:40	139.2	↑2.2
4/20 15:50	141.1	↑1.9
4/20 16:00	142.6	↑1.5
4/20 16:10	143.8	↑1.2
4/20 16:20	144.5	↑0.7
4/20 16:30	144.9	↑0.4	満潮
4/20 16:40	144.9	0
4/20 16:50	144.6	↓-0.3
4/20 17:00	143.9	↓-0.7
4/20 17:10	142.8	↓-1.1
4/20 17:20	141.4	↓-1.4
4/20 17:30	139.6	↓-1.8
4/20 17:40	137.5	↓-2.1
4/20 17:50	135.2	↓-2.3
4/20 18:00	132.5	↓-2.7
4/20 18:10	129.6	↓-2.9
4/20 18:20	126.5	↓-3.1
4/20 18:30	123.1	↓-3.4
4/20 18:40	119.6	↓-3.5
4/20 18:50	116.0	↓-3.6
4/20 19:00	112.2	↓-3.8
4/20 19:10	108.3	↓-3.9
4/20 19:20	104.4	↓-3.9
4/20 19:30	100.4	↓-4.0
4/20 19:40	96.5	↓-3.9
4/20 19:50	92.6	↓-3.9
4/20 20:00	88.7	↓-3.9
4/20 20:10	85.0	↓-3.7
4/20 20:20	81.4	↓-3.6
4/20 20:30	77.9	↓-3.5
4/20 20:40	74.7	↓-3.2
4/20 20:50	71.6	↓-3.1
4/20 21:00	68.8	↓-2.8
4/20 21:10	66.2	↓-2.6
4/20 21:20	64.0	↓-2.2
4/20 21:30	62.0	↓-2.0
4/20 21:40	60.3	↓-1.7
4/20 21:50	59.0	↓-1.3
4/20 22:00	57.9	↓-1.1
4/20 22:10	57.3	↓-0.6
4/20 22:20	57.0	↓-0.3	干潮
4/20 22:30	57.0	0
4/20 22:40	57.4	↑0.4
4/20 22:50	58.1	↑0.7
4/20 23:00	59.2	↑1.1
4/20 23:10	60.6	↑1.4
4/20 23:20	62.4	↑1.8
4/20 23:30	64.4	↑2.0
4/20 23:40	66.8	↑2.4
4/20 23:50	69.4	↑2.6