7 (火)	08:24	01:25	18:30	12:48
	116cm	42cm	133cm	99cm
中潮 出 05:38 入 17:15 出 21:52 入 11:33

日立（茨城）2031年10月7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
10/7 00:00	50.1	↓-2.0
10/7 00:10	48.3	↓-1.8
10/7 00:20	46.7	↓-1.6
10/7 00:30	45.3	↓-1.4
10/7 00:40	44.2	↓-1.1
10/7 00:50	43.3	↓-0.9
10/7 01:00	42.6	↓-0.7
10/7 01:10	42.1	↓-0.5
10/7 01:20	41.9	↓-0.2	干潮
10/7 01:30	41.9	0
10/7 01:40	42.2	↑0.3
10/7 01:50	42.6	↑0.4
10/7 02:00	43.4	↑0.8
10/7 02:10	44.3	↑0.9
10/7 02:20	45.5	↑1.2
10/7 02:30	46.9	↑1.4
10/7 02:40	48.5	↑1.6
10/7 02:50	50.3	↑1.8
10/7 03:00	52.3	↑2.0
10/7 03:10	54.4	↑2.1
10/7 03:20	56.8	↑2.4
10/7 03:30	59.2	↑2.4
10/7 03:40	61.8	↑2.6
10/7 03:50	64.5	↑2.7
10/7 04:00	67.2	↑2.7
10/7 04:10	70.0	↑2.8
10/7 04:20	72.9	↑2.9	最大潮位差
10/7 04:30	75.7	↑2.8
10/7 04:40	78.6	↑2.9	最大潮位差
10/7 04:50	81.4	↑2.8
10/7 05:00	84.2	↑2.8
10/7 05:10	87.0	↑2.8
10/7 05:20	89.7	↑2.7
10/7 05:30	92.3	↑2.6
10/7 05:40	94.8	↑2.5
10/7 05:50	97.1	↑2.3
10/7 06:00	99.4	↑2.3
10/7 06:10	101.6	↑2.2
10/7 06:20	103.6	↑2.0
10/7 06:30	105.4	↑1.8
10/7 06:40	107.1	↑1.7
10/7 06:50	108.7	↑1.6
10/7 07:00	110.1	↑1.4
10/7 07:10	111.4	↑1.3
10/7 07:20	112.5	↑1.1
10/7 07:30	113.4	↑0.9
10/7 07:40	114.2	↑0.8
10/7 07:50	114.8	↑0.6
10/7 08:00	115.2	↑0.4
10/7 08:10	115.5	↑0.3
10/7 08:20	115.6	↑0.1	満潮
10/7 08:30	115.6	0
10/7 08:40	115.4	↓-0.2
10/7 08:50	115.1	↓-0.3
10/7 09:00	114.6	↓-0.5
10/7 09:10	114.1	↓-0.5
10/7 09:20	113.4	↓-0.7
10/7 09:30	112.6	↓-0.8
10/7 09:40	111.8	↓-0.8
10/7 09:50	110.8	↓-1.0
10/7 10:00	109.9	↓-0.9
10/7 10:10	108.9	↓-1.0
10/7 10:20	107.8	↓-1.1
10/7 10:30	106.8	↓-1.0
10/7 10:40	105.8	↓-1.0
10/7 10:50	104.8	↓-1.0
10/7 11:00	103.8	↓-1.0
10/7 11:10	102.9	↓-0.9
10/7 11:20	102.0	↓-0.9
10/7 11:30	101.2	↓-0.8
10/7 11:40	100.5	↓-0.7
10/7 11:50	99.9	↓-0.6
10/7 12:00	99.3	↓-0.6
10/7 12:10	98.9	↓-0.4
10/7 12:20	98.5	↓-0.4
10/7 12:30	98.3	↓-0.2
10/7 12:40	98.2	↓-0.1	干潮
10/7 12:50	98.1	↓-0.1
10/7 13:00	98.2	↑0.1
10/7 13:10	98.4	↑0.2
10/7 13:20	98.7	↑0.3
10/7 13:30	99.2	↑0.5
10/7 13:40	99.7	↑0.5
10/7 13:50	100.4	↑0.7
10/7 14:00	101.2	↑0.8
10/7 14:10	102.1	↑0.9
10/7 14:20	103.1	↑1.0
10/7 14:30	104.2	↑1.1
10/7 14:40	105.4	↑1.2
10/7 14:50	106.7	↑1.3
10/7 15:00	108.1	↑1.4
10/7 15:10	109.5	↑1.4
10/7 15:20	111.0	↑1.5
10/7 15:30	112.6	↑1.6
10/7 15:40	114.2	↑1.6
10/7 15:50	115.8	↑1.6
10/7 16:00	117.5	↑1.7
10/7 16:10	119.1	↑1.6
10/7 16:20	120.7	↑1.6
10/7 16:30	122.2	↑1.5
10/7 16:40	123.7	↑1.5
10/7 16:50	125.1	↑1.4
10/7 17:00	126.4	↑1.3
10/7 17:10	127.7	↑1.3
10/7 17:20	128.8	↑1.1
10/7 17:30	129.8	↑1.0
10/7 17:40	130.6	↑0.8
10/7 17:50	131.3	↑0.7
10/7 18:00	131.9	↑0.6
10/7 18:10	132.2	↑0.3
10/7 18:20	132.5	↑0.3	満潮
10/7 18:30	132.6	↑0.1	満潮
10/7 18:40	132.5	↓-0.1
10/7 18:50	132.2	↓-0.3
10/7 19:00	131.7	↓-0.5
10/7 19:10	131.1	↓-0.6
10/7 19:20	130.4	↓-0.7
10/7 19:30	129.4	↓-1.0
10/7 19:40	128.3	↓-1.1
10/7 19:50	127.0	↓-1.3
10/7 20:00	125.6	↓-1.4
10/7 20:10	124.0	↓-1.6
10/7 20:20	122.2	↓-1.8
10/7 20:30	120.4	↓-1.8
10/7 20:40	118.3	↓-2.1
10/7 20:50	116.2	↓-2.1
10/7 21:00	113.9	↓-2.3
10/7 21:10	111.5	↓-2.4
10/7 21:20	109.0	↓-2.5
10/7 21:30	106.4	↓-2.6
10/7 21:40	103.7	↓-2.7
10/7 21:50	101.0	↓-2.7
10/7 22:00	98.2	↓-2.8
10/7 22:10	95.4	↓-2.8
10/7 22:20	92.6	↓-2.8
10/7 22:30	89.8	↓-2.8
10/7 22:40	87.0	↓-2.8
10/7 22:50	84.2	↓-2.8
10/7 23:00	81.5	↓-2.7
10/7 23:10	78.8	↓-2.7
10/7 23:20	76.2	↓-2.6
10/7 23:30	73.7	↓-2.5
10/7 23:40	71.2	↓-2.5
10/7 23:50	68.9	↓-2.3