20 (日)	04:30	10:52	17:17	23:04
	147cm	22cm	149cm	57cm
大潮 出 05:04 入 18:19 出 05:00 入 18:34 潮干狩り ○ 09:20～12:22

岩井袋（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	61.8	↑2.9
4/20 00:10	64.9	↑3.1
4/20 00:20	68.2	↑3.3
4/20 00:30	71.8	↑3.6
4/20 00:40	75.6	↑3.8
4/20 00:50	79.5	↑3.9
4/20 01:00	83.6	↑4.1
4/20 01:10	87.8	↑4.2
4/20 01:20	92.1	↑4.3
4/20 01:30	96.4	↑4.3
4/20 01:40	100.8	↑4.4
4/20 01:50	105.1	↑4.3
4/20 02:00	109.4	↑4.3
4/20 02:10	113.5	↑4.1
4/20 02:20	117.6	↑4.1
4/20 02:30	121.5	↑3.9
4/20 02:40	125.2	↑3.7
4/20 02:50	128.7	↑3.5
4/20 03:00	132.0	↑3.3
4/20 03:10	135.0	↑3.0
4/20 03:20	137.7	↑2.7
4/20 03:30	140.1	↑2.4
4/20 03:40	142.1	↑2.0
4/20 03:50	143.8	↑1.7
4/20 04:00	145.1	↑1.3
4/20 04:10	146.1	↑1.0
4/20 04:20	146.6	↑0.5	満潮
4/20 04:30	146.8	↑0.2	満潮
4/20 04:40	146.5	↓-0.3
4/20 04:50	145.8	↓-0.7
4/20 05:00	144.8	↓-1.0
4/20 05:10	143.3	↓-1.5
4/20 05:20	141.5	↓-1.8
4/20 05:30	139.2	↓-2.3
4/20 05:40	136.6	↓-2.6
4/20 05:50	133.6	↓-3.0
4/20 06:00	130.4	↓-3.2
4/20 06:10	126.7	↓-3.7
4/20 06:20	122.8	↓-3.9
4/20 06:30	118.7	↓-4.1
4/20 06:40	114.3	↓-4.4
4/20 06:50	109.7	↓-4.6
4/20 07:00	104.9	↓-4.8
4/20 07:10	100.0	↓-4.9
4/20 07:20	94.9	↓-5.1
4/20 07:30	89.8	↓-5.1
4/20 07:40	84.6	↓-5.2	最大潮位差
4/20 07:50	79.5	↓-5.1
4/20 08:00	74.3	↓-5.2	最大潮位差
4/20 08:10	69.2	↓-5.1
4/20 08:20	64.3	↓-4.9
4/20 08:30	59.4	↓-4.9
4/20 08:40	54.7	↓-4.7
4/20 08:50	50.2	↓-4.5
4/20 09:00	46.0	↓-4.2
4/20 09:10	42.0	↓-4.0
4/20 09:20	38.3	↓-3.7
4/20 09:30	34.9	↓-3.4
4/20 09:40	31.8	↓-3.1
4/20 09:50	29.2	↓-2.6
4/20 10:00	26.8	↓-2.4
4/20 10:10	24.9	↓-1.9
4/20 10:20	23.4	↓-1.5
4/20 10:30	22.3	↓-1.1
4/20 10:40	21.6	↓-0.7
4/20 10:50	21.4	↓-0.2	干潮
4/20 11:00	21.5	↑0.1
4/20 11:10	22.2	↑0.7
4/20 11:20	23.2	↑1.0
4/20 11:30	24.7	↑1.5
4/20 11:40	26.5	↑1.8
4/20 11:50	28.8	↑2.3
4/20 12:00	31.5	↑2.7
4/20 12:10	34.5	↑3.0
4/20 12:20	37.8	↑3.3
4/20 12:30	41.5	↑3.7
4/20 12:40	45.5	↑4.0
4/20 12:50	49.7	↑4.2
4/20 13:00	54.2	↑4.5
4/20 13:10	58.9	↑4.7
4/20 13:20	63.7	↑4.8
4/20 13:30	68.7	↑5.0
4/20 13:40	73.8	↑5.1
4/20 13:50	79.0	↑5.2	最大潮位差
4/20 14:00	84.2	↑5.2	最大潮位差
4/20 14:10	89.4	↑5.2	最大潮位差
4/20 14:20	94.6	↑5.2	最大潮位差
4/20 14:30	99.7	↑5.1
4/20 14:40	104.7	↑5.0
4/20 14:50	109.6	↑4.9
4/20 15:00	114.3	↑4.7
4/20 15:10	118.8	↑4.5
4/20 15:20	123.1	↑4.3
4/20 15:30	127.1	↑4.0
4/20 15:40	130.9	↑3.8
4/20 15:50	134.3	↑3.4
4/20 16:00	137.4	↑3.1
4/20 16:10	140.2	↑2.8
4/20 16:20	142.6	↑2.4
4/20 16:30	144.6	↑2.0
4/20 16:40	146.2	↑1.6
4/20 16:50	147.5	↑1.3
4/20 17:00	148.3	↑0.8
4/20 17:10	148.8	↑0.5	満潮
4/20 17:20	148.8	0
4/20 17:30	148.5	↓-0.3
4/20 17:40	147.7	↓-0.8
4/20 17:50	146.6	↓-1.1
4/20 18:00	145.1	↓-1.5
4/20 18:10	143.3	↓-1.8
4/20 18:20	141.1	↓-2.2
4/20 18:30	138.6	↓-2.5
4/20 18:40	135.8	↓-2.8
4/20 18:50	132.7	↓-3.1
4/20 19:00	129.4	↓-3.3
4/20 19:10	125.9	↓-3.5
4/20 19:20	122.2	↓-3.7
4/20 19:30	118.3	↓-3.9
4/20 19:40	114.3	↓-4.0
4/20 19:50	110.3	↓-4.0
4/20 20:00	106.1	↓-4.2
4/20 20:10	102.0	↓-4.1
4/20 20:20	97.8	↓-4.2
4/20 20:30	93.7	↓-4.1
4/20 20:40	89.7	↓-4.0
4/20 20:50	85.8	↓-3.9
4/20 21:00	82.0	↓-3.8
4/20 21:10	78.4	↓-3.6
4/20 21:20	74.9	↓-3.5
4/20 21:30	71.7	↓-3.2
4/20 21:40	68.8	↓-2.9
4/20 21:50	66.1	↓-2.7
4/20 22:00	63.7	↓-2.4
4/20 22:10	61.7	↓-2.0
4/20 22:20	59.9	↓-1.8
4/20 22:30	58.5	↓-1.4
4/20 22:40	57.5	↓-1.0
4/20 22:50	56.8	↓-0.7
4/20 23:00	56.5	↓-0.3	干潮
4/20 23:10	56.6	↑0.1
4/20 23:20	57.0	↑0.4
4/20 23:30	57.8	↑0.8
4/20 23:40	58.9	↑1.1
4/20 23:50	60.4	↑1.5