23 (日)	05:19	11:18	17:16	23:40
	149cm	58cm	147cm	34cm
大潮 出 05:27 入 17:34 出 19:10 入 07:47

日立（茨城）2040年09月23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
9/23 00:00	45.4	↑1.9
9/23 00:10	47.7	↑2.3
9/23 00:20	50.4	↑2.7
9/23 00:30	53.4	↑3.0
9/23 00:40	56.7	↑3.3
9/23 00:50	60.2	↑3.5
9/23 01:00	64.1	↑3.9
9/23 01:10	68.1	↑4.0
9/23 01:20	72.4	↑4.3
9/23 01:30	76.8	↑4.4
9/23 01:40	81.3	↑4.5
9/23 01:50	85.9	↑4.6
9/23 02:00	90.6	↑4.7	最大潮位差
9/23 02:10	95.3	↑4.7	最大潮位差
9/23 02:20	99.9	↑4.6
9/23 02:30	104.5	↑4.6
9/23 02:40	109.0	↑4.5
9/23 02:50	113.4	↑4.4
9/23 03:00	117.6	↑4.2
9/23 03:10	121.6	↑4.0
9/23 03:20	125.4	↑3.8
9/23 03:30	129.0	↑3.6
9/23 03:40	132.4	↑3.4
9/23 03:50	135.4	↑3.0
9/23 04:00	138.2	↑2.8
9/23 04:10	140.7	↑2.5
9/23 04:20	142.8	↑2.1
9/23 04:30	144.7	↑1.9
9/23 04:40	146.2	↑1.5
9/23 04:50	147.3	↑1.1
9/23 05:00	148.1	↑0.8
9/23 05:10	148.6	↑0.5	満潮
9/23 05:20	148.7	↑0.1
9/23 05:30	148.4	↓-0.3
9/23 05:40	147.8	↓-0.6
9/23 05:50	146.8	↓-1.0
9/23 06:00	145.5	↓-1.3
9/23 06:10	143.8	↓-1.7
9/23 06:20	141.8	↓-2.0
9/23 06:30	139.5	↓-2.3
9/23 06:40	137.0	↓-2.5
9/23 06:50	134.1	↓-2.9
9/23 07:00	131.0	↓-3.1
9/23 07:10	127.6	↓-3.4
9/23 07:20	124.1	↓-3.5
9/23 07:30	120.4	↓-3.7
9/23 07:40	116.6	↓-3.8
9/23 07:50	112.7	↓-3.9
9/23 08:00	108.7	↓-4.0
9/23 08:10	104.7	↓-4.0
9/23 08:20	100.7	↓-4.0
9/23 08:30	96.7	↓-4.0
9/23 08:40	92.8	↓-3.9
9/23 08:50	89.0	↓-3.8
9/23 09:00	85.3	↓-3.7
9/23 09:10	81.8	↓-3.5
9/23 09:20	78.4	↓-3.4
9/23 09:30	75.2	↓-3.2
9/23 09:40	72.3	↓-2.9
9/23 09:50	69.6	↓-2.7
9/23 10:00	67.1	↓-2.5
9/23 10:10	64.9	↓-2.2
9/23 10:20	63.0	↓-1.9
9/23 10:30	61.4	↓-1.6
9/23 10:40	60.1	↓-1.3
9/23 10:50	59.0	↓-1.1
9/23 11:00	58.3	↓-0.7
9/23 11:10	57.9	↓-0.4	干潮
9/23 11:20	57.8	↓-0.1
9/23 11:30	58.1	↑0.3
9/23 11:40	58.7	↑0.6
9/23 11:50	59.6	↑0.9
9/23 12:00	60.8	↑1.2
9/23 12:10	62.3	↑1.5
9/23 12:20	64.2	↑1.9
9/23 12:30	66.3	↑2.1
9/23 12:40	68.8	↑2.5
9/23 12:50	71.5	↑2.7
9/23 13:00	74.4	↑2.9
9/23 13:10	77.6	↑3.2
9/23 13:20	81.0	↑3.4
9/23 13:30	84.5	↑3.5
9/23 13:40	88.2	↑3.7
9/23 13:50	92.1	↑3.9
9/23 14:00	96.0	↑3.9
9/23 14:10	99.9	↑3.9
9/23 14:20	103.8	↑3.9
9/23 14:30	107.8	↑4.0
9/23 14:40	111.7	↑3.9
9/23 14:50	115.5	↑3.8
9/23 15:00	119.2	↑3.7
9/23 15:10	122.7	↑3.5
9/23 15:20	126.1	↑3.4
9/23 15:30	129.3	↑3.2
9/23 15:40	132.2	↑2.9
9/23 15:50	135.0	↑2.8
9/23 16:00	137.5	↑2.5
9/23 16:10	139.7	↑2.2
9/23 16:20	141.6	↑1.9
9/23 16:30	143.2	↑1.6
9/23 16:40	144.5	↑1.3
9/23 16:50	145.5	↑1.0
9/23 17:00	146.2	↑0.7
9/23 17:10	146.5	↑0.3	満潮
9/23 17:20	146.5	0
9/23 17:30	146.1	↓-0.4
9/23 17:40	145.4	↓-0.7
9/23 17:50	144.4	↓-1.0
9/23 18:00	143.0	↓-1.4
9/23 18:10	141.2	↓-1.8
9/23 18:20	139.1	↓-2.1
9/23 18:30	136.7	↓-2.4
9/23 18:40	133.9	↓-2.8
9/23 18:50	130.9	↓-3.0
9/23 19:00	127.5	↓-3.4
9/23 19:10	123.9	↓-3.6
9/23 19:20	120.0	↓-3.9
9/23 19:30	116.0	↓-4.0
9/23 19:40	111.7	↓-4.3
9/23 19:50	107.3	↓-4.4
9/23 20:00	102.8	↓-4.5
9/23 20:10	98.1	↓-4.7	最大潮位差
9/23 20:20	93.5	↓-4.6
9/23 20:30	88.8	↓-4.7	最大潮位差
9/23 20:40	84.1	↓-4.7	最大潮位差
9/23 20:50	79.5	↓-4.6
9/23 21:00	74.9	↓-4.6
9/23 21:10	70.5	↓-4.4
9/23 21:20	66.2	↓-4.3
9/23 21:30	62.1	↓-4.1
9/23 21:40	58.2	↓-3.9
9/23 21:50	54.5	↓-3.7
9/23 22:00	51.0	↓-3.5
9/23 22:10	47.9	↓-3.1
9/23 22:20	45.0	↓-2.9
9/23 22:30	42.4	↓-2.6
9/23 22:40	40.1	↓-2.3
9/23 22:50	38.2	↓-1.9
9/23 23:00	36.6	↓-1.6
9/23 23:10	35.3	↓-1.3
9/23 23:20	34.4	↓-0.9
9/23 23:30	33.9	↓-0.5	干潮
9/23 23:40	33.8	↓-0.1	干潮
9/23 23:50	34.0	↑0.2