7 (土)	06:05	11:19	16:55	23:57
	137cm	87cm	146cm	30cm
中潮 出 05:38 入 17:14 出 18:52 入 08:52

日立（茨城）2028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	31.6	↑1.0
10/7 00:10	33.0	↑1.4
10/7 00:20	34.7	↑1.7
10/7 00:30	36.8	↑2.1
10/7 00:40	39.1	↑2.3
10/7 00:50	41.7	↑2.6
10/7 01:00	44.6	↑2.9
10/7 01:10	47.8	↑3.2
10/7 01:20	51.2	↑3.4
10/7 01:30	54.8	↑3.6
10/7 01:40	58.6	↑3.8
10/7 01:50	62.6	↑4.0
10/7 02:00	66.7	↑4.1
10/7 02:10	71.0	↑4.3
10/7 02:20	75.3	↑4.3
10/7 02:30	79.6	↑4.3
10/7 02:40	84.0	↑4.4
10/7 02:50	88.3	↑4.3
10/7 03:00	92.6	↑4.3
10/7 03:10	96.8	↑4.2
10/7 03:20	100.9	↑4.1
10/7 03:30	104.8	↑3.9
10/7 03:40	108.6	↑3.8
10/7 03:50	112.2	↑3.6
10/7 04:00	115.6	↑3.4
10/7 04:10	118.8	↑3.2
10/7 04:20	121.7	↑2.9
10/7 04:30	124.4	↑2.7
10/7 04:40	126.9	↑2.5
10/7 04:50	129.1	↑2.2
10/7 05:00	131.0	↑1.9
10/7 05:10	132.6	↑1.6
10/7 05:20	134.0	↑1.4
10/7 05:30	135.1	↑1.1
10/7 05:40	135.9	↑0.8
10/7 05:50	136.4	↑0.5
10/7 06:00	136.6	↑0.2	満潮
10/7 06:10	136.6	0
10/7 06:20	136.3	↓-0.3
10/7 06:30	135.7	↓-0.6
10/7 06:40	134.9	↓-0.8
10/7 06:50	133.8	↓-1.1
10/7 07:00	132.6	↓-1.2
10/7 07:10	131.1	↓-1.5
10/7 07:20	129.4	↓-1.7
10/7 07:30	127.5	↓-1.9
10/7 07:40	125.4	↓-2.1
10/7 07:50	123.2	↓-2.2
10/7 08:00	120.9	↓-2.3
10/7 08:10	118.5	↓-2.4
10/7 08:20	116.0	↓-2.5
10/7 08:30	113.5	↓-2.5
10/7 08:40	111.0	↓-2.5
10/7 08:50	108.5	↓-2.5
10/7 09:00	106.0	↓-2.5
10/7 09:10	103.6	↓-2.4
10/7 09:20	101.3	↓-2.3
10/7 09:30	99.1	↓-2.2
10/7 09:40	97.0	↓-2.1
10/7 09:50	95.1	↓-1.9
10/7 10:00	93.3	↓-1.8
10/7 10:10	91.8	↓-1.5
10/7 10:20	90.4	↓-1.4
10/7 10:30	89.2	↓-1.2
10/7 10:40	88.3	↓-0.9
10/7 10:50	87.5	↓-0.8
10/7 11:00	87.0	↓-0.5
10/7 11:10	86.7	↓-0.3	干潮
10/7 11:20	86.6	↓-0.1
10/7 11:30	86.8	↑0.2
10/7 11:40	87.2	↑0.4
10/7 11:50	87.8	↑0.6
10/7 12:00	88.6	↑0.8
10/7 12:10	89.7	↑1.1
10/7 12:20	90.9	↑1.2
10/7 12:30	92.4	↑1.5
10/7 12:40	94.0	↑1.6
10/7 12:50	95.9	↑1.9
10/7 13:00	97.9	↑2.0
10/7 13:10	100.0	↑2.1
10/7 13:20	102.4	↑2.4
10/7 13:30	104.8	↑2.4
10/7 13:40	107.4	↑2.6
10/7 13:50	110.0	↑2.6
10/7 14:00	112.8	↑2.8
10/7 14:10	115.6	↑2.8
10/7 14:20	118.4	↑2.8
10/7 14:30	121.2	↑2.8
10/7 14:40	123.9	↑2.7
10/7 14:50	126.6	↑2.7
10/7 15:00	129.2	↑2.6
10/7 15:10	131.7	↑2.5
10/7 15:20	134.1	↑2.4
10/7 15:30	136.3	↑2.2
10/7 15:40	138.3	↑2.0
10/7 15:50	140.1	↑1.8
10/7 16:00	141.7	↑1.6
10/7 16:10	143.0	↑1.3
10/7 16:20	144.1	↑1.1
10/7 16:30	144.9	↑0.8
10/7 16:40	145.5	↑0.6
10/7 16:50	145.7	↑0.2	満潮
10/7 17:00	145.7	0
10/7 17:10	145.4	↓-0.3
10/7 17:20	144.7	↓-0.7
10/7 17:30	143.8	↓-0.9
10/7 17:40	142.6	↓-1.2
10/7 17:50	141.2	↓-1.4
10/7 18:00	139.4	↓-1.8
10/7 18:10	137.4	↓-2.0
10/7 18:20	135.0	↓-2.4
10/7 18:30	132.5	↓-2.5
10/7 18:40	129.7	↓-2.8
10/7 18:50	126.6	↓-3.1
10/7 19:00	123.3	↓-3.3
10/7 19:10	119.8	↓-3.5
10/7 19:20	116.2	↓-3.6
10/7 19:30	112.3	↓-3.9
10/7 19:40	108.3	↓-4.0
10/7 19:50	104.1	↓-4.2
10/7 20:00	99.8	↓-4.3
10/7 20:10	95.5	↓-4.3
10/7 20:20	91.1	↓-4.4
10/7 20:30	86.6	↓-4.5	最大潮位差
10/7 20:40	82.1	↓-4.5	最大潮位差
10/7 20:50	77.7	↓-4.4
10/7 21:00	73.3	↓-4.4
10/7 21:10	69.0	↓-4.3
10/7 21:20	64.8	↓-4.2
10/7 21:30	60.7	↓-4.1
10/7 21:40	56.8	↓-3.9
10/7 21:50	53.1	↓-3.7
10/7 22:00	49.6	↓-3.5
10/7 22:10	46.3	↓-3.3
10/7 22:20	43.3	↓-3.0
10/7 22:30	40.5	↓-2.8
10/7 22:40	38.1	↓-2.4
10/7 22:50	35.9	↓-2.2
10/7 23:00	34.0	↓-1.9
10/7 23:10	32.4	↓-1.6
10/7 23:20	31.1	↓-1.3
10/7 23:30	30.1	↓-1.0
10/7 23:40	29.5	↓-0.6
10/7 23:50	29.1	↓-0.4	干潮