20 (土)	06:03	11:36	17:15	23:54
	146cm	68cm	150cm	12cm
大潮 出 06:23 入 17:29 出 18:09 入 06:50

岩井袋（千葉）2038年02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
2/20 00:00	11.5	↑1.5
2/20 00:10	13.4	↑1.9
2/20 00:20	15.8	↑2.4
2/20 00:30	18.5	↑2.7
2/20 00:40	21.5	↑3.0
2/20 00:50	25.0	↑3.5
2/20 01:00	28.7	↑3.7
2/20 01:10	32.8	↑4.1
2/20 01:20	37.1	↑4.3
2/20 01:30	41.7	↑4.6
2/20 01:40	46.5	↑4.8
2/20 01:50	51.5	↑5.0
2/20 02:00	56.6	↑5.1
2/20 02:10	61.9	↑5.3
2/20 02:20	67.2	↑5.3
2/20 02:30	72.6	↑5.4
2/20 02:40	78.1	↑5.5	最大潮位差
2/20 02:50	83.5	↑5.4
2/20 03:00	88.9	↑5.4
2/20 03:10	94.1	↑5.2
2/20 03:20	99.3	↑5.2
2/20 03:30	104.3	↑5.0
2/20 03:40	109.2	↑4.9
2/20 03:50	113.8	↑4.6
2/20 04:00	118.2	↑4.4
2/20 04:10	122.4	↑4.2
2/20 04:20	126.3	↑3.9
2/20 04:30	129.8	↑3.5
2/20 04:40	133.1	↑3.3
2/20 04:50	136.0	↑2.9
2/20 05:00	138.5	↑2.5
2/20 05:10	140.7	↑2.2
2/20 05:20	142.5	↑1.8
2/20 05:30	143.9	↑1.4
2/20 05:40	144.9	↑1.0
2/20 05:50	145.6	↑0.7
2/20 06:00	145.8	↑0.2	満潮
2/20 06:10	145.7	↓-0.1
2/20 06:20	145.2	↓-0.5
2/20 06:30	144.4	↓-0.8
2/20 06:40	143.2	↓-1.2
2/20 06:50	141.6	↓-1.6
2/20 07:00	139.8	↓-1.8
2/20 07:10	137.6	↓-2.2
2/20 07:20	135.2	↓-2.4
2/20 07:30	132.6	↓-2.6
2/20 07:40	129.7	↓-2.9
2/20 07:50	126.6	↓-3.1
2/20 08:00	123.3	↓-3.3
2/20 08:10	119.9	↓-3.4
2/20 08:20	116.4	↓-3.5
2/20 08:30	112.8	↓-3.6
2/20 08:40	109.2	↓-3.6
2/20 08:50	105.6	↓-3.6
2/20 09:00	101.9	↓-3.7
2/20 09:10	98.3	↓-3.6
2/20 09:20	94.8	↓-3.5
2/20 09:30	91.5	↓-3.3
2/20 09:40	88.2	↓-3.3
2/20 09:50	85.1	↓-3.1
2/20 10:00	82.2	↓-2.9
2/20 10:10	79.5	↓-2.7
2/20 10:20	77.1	↓-2.4
2/20 10:30	74.9	↓-2.2
2/20 10:40	72.9	↓-2.0
2/20 10:50	71.3	↓-1.6
2/20 11:00	70.0	↓-1.3
2/20 11:10	69.0	↓-1.0
2/20 11:20	68.3	↓-0.7
2/20 11:30	68.0	↓-0.3	干潮
2/20 11:40	68.0	0
2/20 11:50	68.3	↑0.3
2/20 12:00	68.9	↑0.6
2/20 12:10	69.9	↑1.0
2/20 12:20	71.2	↑1.3
2/20 12:30	72.9	↑1.7
2/20 12:40	74.8	↑1.9
2/20 12:50	77.0	↑2.2
2/20 13:00	79.5	↑2.5
2/20 13:10	82.2	↑2.7
2/20 13:20	85.1	↑2.9
2/20 13:30	88.3	↑3.2
2/20 13:40	91.6	↑3.3
2/20 13:50	95.0	↑3.4
2/20 14:00	98.6	↑3.6
2/20 14:10	102.3	↑3.7
2/20 14:20	106.0	↑3.7
2/20 14:30	109.8	↑3.8
2/20 14:40	113.6	↑3.8
2/20 14:50	117.3	↑3.7
2/20 15:00	120.9	↑3.6
2/20 15:10	124.5	↑3.6
2/20 15:20	127.9	↑3.4
2/20 15:30	131.2	↑3.3
2/20 15:40	134.3	↑3.1
2/20 15:50	137.2	↑2.9
2/20 16:00	139.8	↑2.6
2/20 16:10	142.1	↑2.3
2/20 16:20	144.2	↑2.1
2/20 16:30	146.0	↑1.8
2/20 16:40	147.4	↑1.4
2/20 16:50	148.5	↑1.1
2/20 17:00	149.2	↑0.7
2/20 17:10	149.6	↑0.4	満潮
2/20 17:20	149.5	↓-0.1
2/20 17:30	149.1	↓-0.4
2/20 17:40	148.3	↓-0.8
2/20 17:50	147.1	↓-1.2
2/20 18:00	145.5	↓-1.6
2/20 18:10	143.5	↓-2.0
2/20 18:20	141.1	↓-2.4
2/20 18:30	138.4	↓-2.7
2/20 18:40	135.3	↓-3.1
2/20 18:50	131.9	↓-3.4
2/20 19:00	128.2	↓-3.7
2/20 19:10	124.2	↓-4.0
2/20 19:20	119.8	↓-4.4
2/20 19:30	115.3	↓-4.5
2/20 19:40	110.5	↓-4.8
2/20 19:50	105.5	↓-5.0
2/20 20:00	100.4	↓-5.1
2/20 20:10	95.2	↓-5.2
2/20 20:20	89.8	↓-5.4
2/20 20:30	84.4	↓-5.4
2/20 20:40	78.9	↓-5.5	最大潮位差
2/20 20:50	73.5	↓-5.4
2/20 21:00	68.1	↓-5.4
2/20 21:10	62.7	↓-5.4
2/20 21:20	57.5	↓-5.2
2/20 21:30	52.4	↓-5.1
2/20 21:40	47.5	↓-4.9
2/20 21:50	42.8	↓-4.7
2/20 22:00	38.4	↓-4.4
2/20 22:10	34.2	↓-4.2
2/20 22:20	30.3	↓-3.9
2/20 22:30	26.7	↓-3.6
2/20 22:40	23.5	↓-3.2
2/20 22:50	20.6	↓-2.9
2/20 23:00	18.1	↓-2.5
2/20 23:10	16.1	↓-2.0
2/20 23:20	14.4	↓-1.7
2/20 23:30	13.2	↓-1.2
2/20 23:40	12.4	↓-0.8
2/20 23:50	12.0	↓-0.4	干潮