9 (土)	06:02	11:38	17:16	23:55
	136cm	71cm	128cm	23cm
中潮 出 05:40 入 17:11 出 08:33 入 19:04

那珂湊（茨城）2021年10月9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
10/9 00:00	31.4	↑1.3
10/9 00:10	33.1	↑1.7
10/9 00:20	35.0	↑1.9
10/9 00:30	37.3	↑2.3
10/9 00:40	39.8	↑2.5
10/9 00:50	42.5	↑2.7
10/9 01:00	45.5	↑3.0
10/9 01:10	48.7	↑3.2
10/9 01:20	52.1	↑3.4
10/9 01:30	55.7	↑3.6
10/9 01:40	59.4	↑3.7
10/9 01:50	63.3	↑3.9
10/9 02:00	67.2	↑3.9
10/9 02:10	71.3	↑4.1
10/9 02:20	75.4	↑4.1
10/9 02:30	79.5	↑4.1
10/9 02:40	83.6	↑4.1
10/9 02:50	87.7	↑4.1
10/9 03:00	91.8	↑4.1
10/9 03:10	95.8	↑4.0
10/9 03:20	99.8	↑4.0
10/9 03:30	103.6	↑3.8
10/9 03:40	107.3	↑3.7
10/9 03:50	110.8	↑3.5
10/9 04:00	114.2	↑3.4
10/9 04:10	117.4	↑3.2
10/9 04:20	120.3	↑2.9
10/9 04:30	123.1	↑2.8
10/9 04:40	125.6	↑2.5
10/9 04:50	127.8	↑2.2
10/9 05:00	129.8	↑2.0
10/9 05:10	131.5	↑1.7
10/9 05:20	132.9	↑1.4
10/9 05:30	134.0	↑1.1
10/9 05:40	134.8	↑0.8
10/9 05:50	135.3	↑0.5
10/9 06:00	135.5	↑0.2	満潮
10/9 06:10	135.4	↓-0.1
10/9 06:20	135.0	↓-0.4
10/9 06:30	134.3	↓-0.7
10/9 06:40	133.3	↓-1.0
10/9 06:50	132.0	↓-1.3
10/9 07:00	130.5	↓-1.5
10/9 07:10	128.7	↓-1.8
10/9 07:20	126.7	↓-2.0
10/9 07:30	124.4	↓-2.3
10/9 07:40	122.0	↓-2.4
10/9 07:50	119.4	↓-2.6
10/9 08:00	116.7	↓-2.7
10/9 08:10	113.9	↓-2.8
10/9 08:20	111.0	↓-2.9
10/9 08:30	108.0	↓-3.0
10/9 08:40	104.9	↓-3.1
10/9 08:50	101.9	↓-3.0
10/9 09:00	98.9	↓-3.0
10/9 09:10	95.9	↓-3.0
10/9 09:20	93.0	↓-2.9
10/9 09:30	90.1	↓-2.9
10/9 09:40	87.4	↓-2.7
10/9 09:50	84.9	↓-2.5
10/9 10:00	82.5	↓-2.4
10/9 10:10	80.3	↓-2.2
10/9 10:20	78.2	↓-2.1
10/9 10:30	76.4	↓-1.8
10/9 10:40	74.9	↓-1.5
10/9 10:50	73.5	↓-1.4
10/9 11:00	72.4	↓-1.1
10/9 11:10	71.6	↓-0.8
10/9 11:20	71.0	↓-0.6
10/9 11:30	70.7	↓-0.3	干潮
10/9 11:40	70.6	↓-0.1
10/9 11:50	70.8	↑0.2
10/9 12:00	71.3	↑0.5
10/9 12:10	72.0	↑0.7
10/9 12:20	72.9	↑0.9
10/9 12:30	74.0	↑1.1
10/9 12:40	75.4	↑1.4
10/9 12:50	77.0	↑1.6
10/9 13:00	78.7	↑1.7
10/9 13:10	80.6	↑1.9
10/9 13:20	82.7	↑2.1
10/9 13:30	84.9	↑2.2
10/9 13:40	87.2	↑2.3
10/9 13:50	89.6	↑2.4
10/9 14:00	92.1	↑2.5
10/9 14:10	94.7	↑2.6
10/9 14:20	97.3	↑2.6
10/9 14:30	99.9	↑2.6
10/9 14:40	102.5	↑2.6
10/9 14:50	105.1	↑2.6
10/9 15:00	107.6	↑2.5
10/9 15:10	110.1	↑2.5
10/9 15:20	112.4	↑2.3
10/9 15:30	114.7	↑2.3
10/9 15:40	116.8	↑2.1
10/9 15:50	118.8	↑2.0
10/9 16:00	120.7	↑1.9
10/9 16:10	122.3	↑1.6
10/9 16:20	123.8	↑1.5
10/9 16:30	125.0	↑1.2
10/9 16:40	126.1	↑1.1
10/9 16:50	126.8	↑0.7
10/9 17:00	127.4	↑0.6
10/9 17:10	127.6	↑0.2	満潮
10/9 17:20	127.6	0
10/9 17:30	127.4	↓-0.2
10/9 17:40	126.8	↓-0.6
10/9 17:50	125.9	↓-0.9
10/9 18:00	124.8	↓-1.1
10/9 18:10	123.4	↓-1.4
10/9 18:20	121.7	↓-1.7
10/9 18:30	119.7	↓-2.0
10/9 18:40	117.4	↓-2.3
10/9 18:50	114.9	↓-2.5
10/9 19:00	112.1	↓-2.8
10/9 19:10	109.1	↓-3.0
10/9 19:20	105.9	↓-3.2
10/9 19:30	102.4	↓-3.5
10/9 19:40	98.8	↓-3.6
10/9 19:50	95.0	↓-3.8
10/9 20:00	91.1	↓-3.9
10/9 20:10	87.1	↓-4.0
10/9 20:20	82.9	↓-4.2
10/9 20:30	78.8	↓-4.1
10/9 20:40	74.5	↓-4.3	最大潮位差
10/9 20:50	70.3	↓-4.2
10/9 21:00	66.1	↓-4.2
10/9 21:10	62.0	↓-4.1
10/9 21:20	57.9	↓-4.1
10/9 21:30	54.0	↓-3.9
10/9 21:40	50.2	↓-3.8
10/9 21:50	46.6	↓-3.6
10/9 22:00	43.1	↓-3.5
10/9 22:10	39.9	↓-3.2
10/9 22:20	36.9	↓-3.0
10/9 22:30	34.1	↓-2.8
10/9 22:40	31.6	↓-2.5
10/9 22:50	29.4	↓-2.2
10/9 23:00	27.5	↓-1.9
10/9 23:10	25.9	↓-1.6
10/9 23:20	24.7	↓-1.2
10/9 23:30	23.7	↓-1.0
10/9 23:40	23.1	↓-0.6
10/9 23:50	22.8	↓-0.3	干潮