21 (水)	05:38	11:41	17:35	23:59
	150cm	59cm	151cm	41cm
中潮 出 05:25 入 17:38 出 08:11 入 19:31

大洗（茨城）2039年09月21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
9/21 00:00	49.1	↑1.2
9/21 00:10	50.6	↑1.5
9/21 00:20	52.4	↑1.8
9/21 00:30	54.6	↑2.2
9/21 00:40	57.1	↑2.5
9/21 00:50	59.9	↑2.8
9/21 01:00	63.0	↑3.1
9/21 01:10	66.3	↑3.3
9/21 01:20	69.9	↑3.6
9/21 01:30	73.7	↑3.8
9/21 01:40	77.6	↑3.9
9/21 01:50	81.7	↑4.1
9/21 02:00	85.9	↑4.2
9/21 02:10	90.2	↑4.3
9/21 02:20	94.5	↑4.3
9/21 02:30	98.9	↑4.4
9/21 02:40	103.2	↑4.3
9/21 02:50	107.5	↑4.3
9/21 03:00	111.7	↑4.2
9/21 03:10	115.8	↑4.1
9/21 03:20	119.8	↑4.0
9/21 03:30	123.6	↑3.8
9/21 03:40	127.3	↑3.7
9/21 03:50	130.7	↑3.4
9/21 04:00	133.9	↑3.2
9/21 04:10	136.8	↑2.9
9/21 04:20	139.4	↑2.6
9/21 04:30	141.8	↑2.4
9/21 04:40	143.9	↑2.1
9/21 04:50	145.6	↑1.7
9/21 05:00	147.0	↑1.4
9/21 05:10	148.1	↑1.1
9/21 05:20	148.9	↑0.8
9/21 05:30	149.3	↑0.4	満潮
9/21 05:40	149.3	0
9/21 05:50	149.1	↓-0.2
9/21 06:00	148.5	↓-0.6
9/21 06:10	147.5	↓-1.0
9/21 06:20	146.2	↓-1.3
9/21 06:30	144.7	↓-1.5
9/21 06:40	142.8	↓-1.9
9/21 06:50	140.6	↓-2.2
9/21 07:00	138.1	↓-2.5
9/21 07:10	135.4	↓-2.7
9/21 07:20	132.5	↓-2.9
9/21 07:30	129.3	↓-3.2
9/21 07:40	125.9	↓-3.4
9/21 07:50	122.4	↓-3.5
9/21 08:00	118.7	↓-3.7
9/21 08:10	115.0	↓-3.7
9/21 08:20	111.1	↓-3.9
9/21 08:30	107.2	↓-3.9
9/21 08:40	103.2	↓-4.0
9/21 08:50	99.3	↓-3.9
9/21 09:00	95.4	↓-3.9
9/21 09:10	91.5	↓-3.9
9/21 09:20	87.8	↓-3.7
9/21 09:30	84.2	↓-3.6
9/21 09:40	80.7	↓-3.5
9/21 09:50	77.4	↓-3.3
9/21 10:00	74.3	↓-3.1
9/21 10:10	71.4	↓-2.9
9/21 10:20	68.8	↓-2.6
9/21 10:30	66.4	↓-2.4
9/21 10:40	64.3	↓-2.1
9/21 10:50	62.5	↓-1.8
9/21 11:00	61.0	↓-1.5
9/21 11:10	59.8	↓-1.2
9/21 11:20	59.0	↓-0.8
9/21 11:30	58.4	↓-0.6
9/21 11:40	58.3	↓-0.1	干潮
9/21 11:50	58.4	↑0.1
9/21 12:00	58.9	↑0.5
9/21 12:10	59.8	↑0.9
9/21 12:20	61.0	↑1.2
9/21 12:30	62.5	↑1.5
9/21 12:40	64.4	↑1.9
9/21 12:50	66.6	↑2.2
9/21 13:00	69.0	↑2.4
9/21 13:10	71.8	↑2.8
9/21 13:20	74.8	↑3.0
9/21 13:30	78.0	↑3.2
9/21 13:40	81.5	↑3.5
9/21 13:50	85.2	↑3.7
9/21 14:00	89.0	↑3.8
9/21 14:10	92.9	↑3.9
9/21 14:20	97.0	↑4.1
9/21 14:30	101.1	↑4.1
9/21 14:40	105.2	↑4.1
9/21 14:50	109.4	↑4.2
9/21 15:00	113.5	↑4.1
9/21 15:10	117.5	↑4.0
9/21 15:20	121.4	↑3.9
9/21 15:30	125.2	↑3.8
9/21 15:40	128.8	↑3.6
9/21 15:50	132.2	↑3.4
9/21 16:00	135.4	↑3.2
9/21 16:10	138.4	↑3.0
9/21 16:20	141.1	↑2.7
9/21 16:30	143.4	↑2.3
9/21 16:40	145.5	↑2.1
9/21 16:50	147.3	↑1.8
9/21 17:00	148.7	↑1.4
9/21 17:10	149.7	↑1.0
9/21 17:20	150.4	↑0.7
9/21 17:30	150.8	↑0.4	満潮
9/21 17:40	150.7	↓-0.1
9/21 17:50	150.3	↓-0.4
9/21 18:00	149.6	↓-0.7
9/21 18:10	148.4	↓-1.2
9/21 18:20	147.0	↓-1.4
9/21 18:30	145.1	↓-1.9
9/21 18:40	143.0	↓-2.1
9/21 18:50	140.5	↓-2.5
9/21 19:00	137.7	↓-2.8
9/21 19:10	134.6	↓-3.1
9/21 19:20	131.3	↓-3.3
9/21 19:30	127.7	↓-3.6
9/21 19:40	123.9	↓-3.8
9/21 19:50	119.8	↓-4.1
9/21 20:00	115.7	↓-4.1
9/21 20:10	111.4	↓-4.3
9/21 20:20	106.9	↓-4.5
9/21 20:30	102.4	↓-4.5
9/21 20:40	97.9	↓-4.5
9/21 20:50	93.4	↓-4.5
9/21 21:00	88.8	↓-4.6	最大潮位差
9/21 21:10	84.4	↓-4.4
9/21 21:20	80.0	↓-4.4
9/21 21:30	75.7	↓-4.3
9/21 21:40	71.5	↓-4.2
9/21 21:50	67.6	↓-3.9
9/21 22:00	63.8	↓-3.8
9/21 22:10	60.2	↓-3.6
9/21 22:20	56.9	↓-3.3
9/21 22:30	53.8	↓-3.1
9/21 22:40	51.1	↓-2.7
9/21 22:50	48.6	↓-2.5
9/21 23:00	46.4	↓-2.2
9/21 23:10	44.5	↓-1.9
9/21 23:20	43.0	↓-1.5
9/21 23:30	41.9	↓-1.1
9/21 23:40	41.0	↓-0.9
9/21 23:50	40.5	↓-0.5	干潮