20 (日)	04:30	10:46	16:54	22:52
	140cm	44cm	129cm	44cm
中潮 出 05:24 入 17:40 出 18:15 入 06:20

那珂湊（茨城）2043年09月20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
9/20 00:00	69.7	↑2.6
9/20 00:10	72.5	↑2.8
9/20 00:20	75.5	↑3.0
9/20 00:30	78.7	↑3.2
9/20 00:40	82.0	↑3.3
9/20 00:50	85.4	↑3.4
9/20 01:00	88.8	↑3.4
9/20 01:10	92.4	↑3.6
9/20 01:20	95.9	↑3.5
9/20 01:30	99.5	↑3.6
9/20 01:40	103.1	↑3.6
9/20 01:50	106.6	↑3.5
9/20 02:00	110.0	↑3.4
9/20 02:10	113.4	↑3.4
9/20 02:20	116.7	↑3.3
9/20 02:30	119.8	↑3.1
9/20 02:40	122.8	↑3.0
9/20 02:50	125.6	↑2.8
9/20 03:00	128.1	↑2.5
9/20 03:10	130.5	↑2.4
9/20 03:20	132.7	↑2.2
9/20 03:30	134.5	↑1.8
9/20 03:40	136.2	↑1.7
9/20 03:50	137.5	↑1.3
9/20 04:00	138.5	↑1.0
9/20 04:10	139.3	↑0.8
9/20 04:20	139.7	↑0.4	満潮
9/20 04:30	139.8	↑0.1	満潮
9/20 04:40	139.6	↓-0.2
9/20 04:50	139.1	↓-0.5
9/20 05:00	138.3	↓-0.8
9/20 05:10	137.1	↓-1.2
9/20 05:20	135.6	↓-1.5
9/20 05:30	133.8	↓-1.8
9/20 05:40	131.8	↓-2.0
9/20 05:50	129.4	↓-2.4
9/20 06:00	126.8	↓-2.6
9/20 06:10	123.9	↓-2.9
9/20 06:20	120.8	↓-3.1
9/20 06:30	117.5	↓-3.3
9/20 06:40	114.0	↓-3.5
9/20 06:50	110.4	↓-3.6
9/20 07:00	106.6	↓-3.8
9/20 07:10	102.7	↓-3.9
9/20 07:20	98.7	↓-4.0
9/20 07:30	94.7	↓-4.0
9/20 07:40	90.6	↓-4.1	最大潮位差
9/20 07:50	86.6	↓-4.0
9/20 08:00	82.6	↓-4.0
9/20 08:10	78.6	↓-4.0
9/20 08:20	74.8	↓-3.8
9/20 08:30	71.1	↓-3.7
9/20 08:40	67.5	↓-3.6
9/20 08:50	64.1	↓-3.4
9/20 09:00	60.9	↓-3.2
9/20 09:10	57.9	↓-3.0
9/20 09:20	55.2	↓-2.7
9/20 09:30	52.7	↓-2.5
9/20 09:40	50.6	↓-2.1
9/20 09:50	48.7	↓-1.9
9/20 10:00	47.1	↓-1.6
9/20 10:10	45.8	↓-1.3
9/20 10:20	44.8	↓-1.0
9/20 10:30	44.2	↓-0.6
9/20 10:40	43.8	↓-0.4	干潮
9/20 10:50	43.8	0
9/20 11:00	44.2	↑0.4
9/20 11:10	44.8	↑0.6
9/20 11:20	45.8	↑1.0
9/20 11:30	47.0	↑1.2
9/20 11:40	48.5	↑1.5
9/20 11:50	50.4	↑1.9
9/20 12:00	52.4	↑2.0
9/20 12:10	54.7	↑2.3
9/20 12:20	57.3	↑2.6
9/20 12:30	60.0	↑2.7
9/20 12:40	62.9	↑2.9
9/20 12:50	66.0	↑3.1
9/20 13:00	69.2	↑3.2
9/20 13:10	72.6	↑3.4
9/20 13:20	76.0	↑3.4
9/20 13:30	79.5	↑3.5
9/20 13:40	83.0	↑3.5
9/20 13:50	86.6	↑3.6
9/20 14:00	90.1	↑3.5
9/20 14:10	93.7	↑3.6
9/20 14:20	97.1	↑3.4
9/20 14:30	100.5	↑3.4
9/20 14:40	103.8	↑3.3
9/20 14:50	107.0	↑3.2
9/20 15:00	110.0	↑3.0
9/20 15:10	112.8	↑2.8
9/20 15:20	115.5	↑2.7
9/20 15:30	117.9	↑2.4
9/20 15:40	120.1	↑2.2
9/20 15:50	122.1	↑2.0
9/20 16:00	123.8	↑1.7
9/20 16:10	125.2	↑1.4
9/20 16:20	126.4	↑1.2
9/20 16:30	127.3	↑0.9
9/20 16:40	127.8	↑0.5
9/20 16:50	128.1	↑0.3	満潮
9/20 17:00	128.0	↓-0.1
9/20 17:10	127.6	↓-0.4
9/20 17:20	126.9	↓-0.7
9/20 17:30	125.9	↓-1.0
9/20 17:40	124.6	↓-1.3
9/20 17:50	123.0	↓-1.6
9/20 18:00	121.2	↓-1.8
9/20 18:10	119.0	↓-2.2
9/20 18:20	116.6	↓-2.4
9/20 18:30	114.0	↓-2.6
9/20 18:40	111.1	↓-2.9
9/20 18:50	108.0	↓-3.1
9/20 19:00	104.8	↓-3.2
9/20 19:10	101.4	↓-3.4
9/20 19:20	97.9	↓-3.5
9/20 19:30	94.3	↓-3.6
9/20 19:40	90.6	↓-3.7
9/20 19:50	86.9	↓-3.7
9/20 20:00	83.2	↓-3.7
9/20 20:10	79.5	↓-3.7
9/20 20:20	75.9	↓-3.6
9/20 20:30	72.3	↓-3.6
9/20 20:40	68.8	↓-3.5
9/20 20:50	65.5	↓-3.3
9/20 21:00	62.3	↓-3.2
9/20 21:10	59.3	↓-3.0
9/20 21:20	56.6	↓-2.7
9/20 21:30	54.0	↓-2.6
9/20 21:40	51.7	↓-2.3
9/20 21:50	49.7	↓-2.0
9/20 22:00	48.0	↓-1.7
9/20 22:10	46.5	↓-1.5
9/20 22:20	45.4	↓-1.1
9/20 22:30	44.6	↓-0.8
9/20 22:40	44.0	↓-0.6
9/20 22:50	43.9	↓-0.1	干潮
9/20 23:00	44.0	↑0.1
9/20 23:10	44.5	↑0.5
9/20 23:20	45.2	↑0.7
9/20 23:30	46.3	↑1.1
9/20 23:40	47.7	↑1.4
9/20 23:50	49.4	↑1.7