3 (金)	05:23	11:00	16:47	23:30
	144cm	72cm	149cm	25cm
大潮 出 05:34 入 17:21 出 18:44 入 07:53

日立（茨城）2031年10月3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
10/3 00:00	34.1	↑2.4
10/3 00:10	36.8	↑2.7
10/3 00:20	39.9	↑3.1
10/3 00:30	43.3	↑3.4
10/3 00:40	47.0	↑3.7
10/3 00:50	51.0	↑4.0
10/3 01:00	55.2	↑4.2
10/3 01:10	59.6	↑4.4
10/3 01:20	64.2	↑4.6
10/3 01:30	68.9	↑4.7
10/3 01:40	73.7	↑4.8
10/3 01:50	78.6	↑4.9
10/3 02:00	83.5	↑4.9
10/3 02:10	88.3	↑4.8
10/3 02:20	93.1	↑4.8
10/3 02:30	97.9	↑4.8
10/3 02:40	102.5	↑4.6
10/3 02:50	106.9	↑4.4
10/3 03:00	111.2	↑4.3
10/3 03:10	115.3	↑4.1
10/3 03:20	119.2	↑3.9
10/3 03:30	122.9	↑3.7
10/3 03:40	126.3	↑3.4
10/3 03:50	129.4	↑3.1
10/3 04:00	132.2	↑2.8
10/3 04:10	134.7	↑2.5
10/3 04:20	137.0	↑2.3
10/3 04:30	138.9	↑1.9
10/3 04:40	140.5	↑1.6
10/3 04:50	141.7	↑1.2
10/3 05:00	142.6	↑0.9
10/3 05:10	143.2	↑0.6
10/3 05:20	143.5	↑0.3	満潮
10/3 05:30	143.4	↓-0.1
10/3 05:40	142.9	↓-0.5
10/3 05:50	142.1	↓-0.8
10/3 06:00	141.0	↓-1.1
10/3 06:10	139.6	↓-1.4
10/3 06:20	137.9	↓-1.7
10/3 06:30	135.9	↓-2.0
10/3 06:40	133.6	↓-2.3
10/3 06:50	131.1	↓-2.5
10/3 07:00	128.4	↓-2.7
10/3 07:10	125.5	↓-2.9
10/3 07:20	122.4	↓-3.1
10/3 07:30	119.2	↓-3.2
10/3 07:40	115.9	↓-3.3
10/3 07:50	112.5	↓-3.4
10/3 08:00	109.1	↓-3.4
10/3 08:10	105.7	↓-3.4
10/3 08:20	102.3	↓-3.4
10/3 08:30	99.0	↓-3.3
10/3 08:40	95.8	↓-3.2
10/3 08:50	92.7	↓-3.1
10/3 09:00	89.7	↓-3.0
10/3 09:10	86.9	↓-2.8
10/3 09:20	84.3	↓-2.6
10/3 09:30	81.8	↓-2.5
10/3 09:40	79.6	↓-2.2
10/3 09:50	77.7	↓-1.9
10/3 10:00	75.9	↓-1.8
10/3 10:10	74.4	↓-1.5
10/3 10:20	73.2	↓-1.2
10/3 10:30	72.2	↓-1.0
10/3 10:40	71.6	↓-0.6
10/3 10:50	71.1	↓-0.5	干潮
10/3 11:00	71.0	↓-0.1	干潮
10/3 11:10	71.2	↑0.2
10/3 11:20	71.7	↑0.5
10/3 11:30	72.4	↑0.7
10/3 11:40	73.4	↑1.0
10/3 11:50	74.8	↑1.4
10/3 12:00	76.4	↑1.6
10/3 12:10	78.3	↑1.9
10/3 12:20	80.4	↑2.1
10/3 12:30	82.8	↑2.4
10/3 12:40	85.4	↑2.6
10/3 12:50	88.3	↑2.9
10/3 13:00	91.3	↑3.0
10/3 13:10	94.5	↑3.2
10/3 13:20	97.8	↑3.3
10/3 13:30	101.3	↑3.5
10/3 13:40	104.8	↑3.5
10/3 13:50	108.4	↑3.6
10/3 14:00	112.0	↑3.6
10/3 14:10	115.6	↑3.6
10/3 14:20	119.1	↑3.5
10/3 14:30	122.5	↑3.4
10/3 14:40	125.9	↑3.4
10/3 14:50	129.1	↑3.2
10/3 15:00	132.1	↑3.0
10/3 15:10	134.9	↑2.8
10/3 15:20	137.6	↑2.7
10/3 15:30	139.9	↑2.3
10/3 15:40	142.1	↑2.2
10/3 15:50	143.9	↑1.8
10/3 16:00	145.5	↑1.6
10/3 16:10	146.8	↑1.3
10/3 16:20	147.8	↑1.0
10/3 16:30	148.5	↑0.7
10/3 16:40	148.8	↑0.3	満潮
10/3 16:50	148.9	↑0.1
10/3 17:00	148.6	↓-0.3
10/3 17:10	147.9	↓-0.7
10/3 17:20	146.9	↓-1.0
10/3 17:30	145.6	↓-1.3
10/3 17:40	144.0	↓-1.6
10/3 17:50	142.0	↓-2.0
10/3 18:00	139.6	↓-2.4
10/3 18:10	137.0	↓-2.6
10/3 18:20	134.0	↓-3.0
10/3 18:30	130.7	↓-3.3
10/3 18:40	127.2	↓-3.5
10/3 18:50	123.4	↓-3.8
10/3 19:00	119.3	↓-4.1
10/3 19:10	115.0	↓-4.3
10/3 19:20	110.5	↓-4.5
10/3 19:30	105.8	↓-4.7
10/3 19:40	101.0	↓-4.8
10/3 19:50	96.1	↓-4.9
10/3 20:00	91.2	↓-4.9
10/3 20:10	86.2	↓-5.0	最大潮位差
10/3 20:20	81.2	↓-5.0	最大潮位差
10/3 20:30	76.3	↓-4.9
10/3 20:40	71.4	↓-4.9
10/3 20:50	66.6	↓-4.8
10/3 21:00	62.0	↓-4.6
10/3 21:10	57.6	↓-4.4
10/3 21:20	53.3	↓-4.3
10/3 21:30	49.3	↓-4.0
10/3 21:40	45.5	↓-3.8
10/3 21:50	41.9	↓-3.6
10/3 22:00	38.7	↓-3.2
10/3 22:10	35.8	↓-2.9
10/3 22:20	33.1	↓-2.7
10/3 22:30	30.8	↓-2.3
10/3 22:40	28.8	↓-2.0
10/3 22:50	27.2	↓-1.6
10/3 23:00	26.0	↓-1.2
10/3 23:10	25.1	↓-0.9
10/3 23:20	24.5	↓-0.6	干潮
10/3 23:30	24.4	↓-0.1	干潮
10/3 23:40	24.6	↑0.2
10/3 23:50	25.2	↑0.6