7 (日)	04:34	10:34	16:35	22:47
	133cm	53cm	129cm	38cm
大潮 出 05:38 入 17:14 出 06:20 入 17:54

那珂湊（茨城）2040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	61.7	↑2.7
10/7 00:10	64.5	↑2.8
10/7 00:20	67.5	↑3.0
10/7 00:30	70.7	↑3.2
10/7 00:40	74.0	↑3.3
10/7 00:50	77.4	↑3.4
10/7 01:00	80.9	↑3.5
10/7 01:10	84.4	↑3.5
10/7 01:20	88.0	↑3.6
10/7 01:30	91.6	↑3.6
10/7 01:40	95.1	↑3.5
10/7 01:50	98.7	↑3.6
10/7 02:00	102.1	↑3.4
10/7 02:10	105.5	↑3.4
10/7 02:20	108.8	↑3.3
10/7 02:30	111.9	↑3.1
10/7 02:40	114.9	↑3.0
10/7 02:50	117.7	↑2.8
10/7 03:00	120.3	↑2.6
10/7 03:10	122.7	↑2.4
10/7 03:20	124.9	↑2.2
10/7 03:30	126.8	↑1.9
10/7 03:40	128.5	↑1.7
10/7 03:50	129.9	↑1.4
10/7 04:00	131.0	↑1.1
10/7 04:10	131.9	↑0.9
10/7 04:20	132.4	↑0.5
10/7 04:30	132.7	↑0.3	満潮
10/7 04:40	132.6	↓-0.1
10/7 04:50	132.3	↓-0.3
10/7 05:00	131.6	↓-0.7
10/7 05:10	130.7	↓-0.9
10/7 05:20	129.4	↓-1.3
10/7 05:30	127.9	↓-1.5
10/7 05:40	126.1	↓-1.8
10/7 05:50	124.1	↓-2.0
10/7 06:00	121.8	↓-2.3
10/7 06:10	119.2	↓-2.6
10/7 06:20	116.5	↓-2.7
10/7 06:30	113.6	↓-2.9
10/7 06:40	110.5	↓-3.1
10/7 06:50	107.3	↓-3.2
10/7 07:00	103.9	↓-3.4
10/7 07:10	100.5	↓-3.4
10/7 07:20	97.0	↓-3.5
10/7 07:30	93.5	↓-3.5
10/7 07:40	89.9	↓-3.6
10/7 07:50	86.4	↓-3.5
10/7 08:00	82.9	↓-3.5
10/7 08:10	79.5	↓-3.4
10/7 08:20	76.2	↓-3.3
10/7 08:30	73.1	↓-3.1
10/7 08:40	70.0	↓-3.1
10/7 08:50	67.2	↓-2.8
10/7 09:00	64.6	↓-2.6
10/7 09:10	62.1	↓-2.5
10/7 09:20	60.0	↓-2.1
10/7 09:30	58.0	↓-2.0
10/7 09:40	56.3	↓-1.7
10/7 09:50	54.9	↓-1.4
10/7 10:00	53.8	↓-1.1
10/7 10:10	53.0	↓-0.8
10/7 10:20	52.5	↓-0.5
10/7 10:30	52.3	↓-0.2	干潮
10/7 10:40	52.3	0
10/7 10:50	52.7	↑0.4
10/7 11:00	53.3	↑0.6
10/7 11:10	54.3	↑1.0
10/7 11:20	55.5	↑1.2
10/7 11:30	57.0	↑1.5
10/7 11:40	58.7	↑1.7
10/7 11:50	60.7	↑2.0
10/7 12:00	62.8	↑2.1
10/7 12:10	65.2	↑2.4
10/7 12:20	67.8	↑2.6
10/7 12:30	70.5	↑2.7
10/7 12:40	73.4	↑2.9
10/7 12:50	76.4	↑3.0
10/7 13:00	79.5	↑3.1
10/7 13:10	82.7	↑3.2
10/7 13:20	85.9	↑3.2
10/7 13:30	89.1	↑3.2
10/7 13:40	92.4	↑3.3
10/7 13:50	95.6	↑3.2
10/7 14:00	98.8	↑3.2
10/7 14:10	102.0	↑3.2
10/7 14:20	105.0	↑3.0
10/7 14:30	108.0	↑3.0
10/7 14:40	110.8	↑2.8
10/7 14:50	113.5	↑2.7
10/7 15:00	116.0	↑2.5
10/7 15:10	118.3	↑2.3
10/7 15:20	120.4	↑2.1
10/7 15:30	122.3	↑1.9
10/7 15:40	123.9	↑1.6
10/7 15:50	125.3	↑1.4
10/7 16:00	126.4	↑1.1
10/7 16:10	127.3	↑0.9
10/7 16:20	127.8	↑0.5
10/7 16:30	128.1	↑0.3	満潮
10/7 16:40	128.1	0
10/7 16:50	127.7	↓-0.4
10/7 17:00	127.1	↓-0.6
10/7 17:10	126.2	↓-0.9
10/7 17:20	124.9	↓-1.3
10/7 17:30	123.4	↓-1.5
10/7 17:40	121.6	↓-1.8
10/7 17:50	119.5	↓-2.1
10/7 18:00	117.1	↓-2.4
10/7 18:10	114.5	↓-2.6
10/7 18:20	111.7	↓-2.8
10/7 18:30	108.6	↓-3.1
10/7 18:40	105.4	↓-3.2
10/7 18:50	102.0	↓-3.4
10/7 19:00	98.4	↓-3.6
10/7 19:10	94.7	↓-3.7
10/7 19:20	91.0	↓-3.7
10/7 19:30	87.1	↓-3.9	最大潮位差
10/7 19:40	83.3	↓-3.8
10/7 19:50	79.4	↓-3.9	最大潮位差
10/7 20:00	75.5	↓-3.9	最大潮位差
10/7 20:10	71.7	↓-3.8
10/7 20:20	68.0	↓-3.7
10/7 20:30	64.4	↓-3.6
10/7 20:40	60.9	↓-3.5
10/7 20:50	57.5	↓-3.4
10/7 21:00	54.4	↓-3.1
10/7 21:10	51.4	↓-3.0
10/7 21:20	48.7	↓-2.7
10/7 21:30	46.3	↓-2.4
10/7 21:40	44.1	↓-2.2
10/7 21:50	42.2	↓-1.9
10/7 22:00	40.6	↓-1.6
10/7 22:10	39.2	↓-1.4
10/7 22:20	38.3	↓-0.9
10/7 22:30	37.6	↓-0.7
10/7 22:40	37.2	↓-0.4	干潮
10/7 22:50	37.2	0
10/7 23:00	37.5	↑0.3
10/7 23:10	38.1	↑0.6
10/7 23:20	39.1	↑1.0
10/7 23:30	40.3	↑1.2
10/7 23:40	41.8	↑1.5
10/7 23:50	43.6	↑1.8