13 (土)	05:51	11:04	16:38	23:27
	115cm	64cm	119cm	5cm
大潮 出 06:28 入 17:18 出 07:34 入 18:40

那珂湊（茨城）2021年02月13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
2/13 00:00	4.8	↑2.1
2/13 00:10	7.3	↑2.5
2/13 00:20	10.0	↑2.7
2/13 00:30	12.9	↑2.9
2/13 00:40	16.1	↑3.2
2/13 00:50	19.5	↑3.4
2/13 01:00	23.2	↑3.7
2/13 01:10	27.0	↑3.8
2/13 01:20	31.0	↑4.0
2/13 01:30	35.1	↑4.1
2/13 01:40	39.3	↑4.2
2/13 01:50	43.6	↑4.3
2/13 02:00	48.0	↑4.4
2/13 02:10	52.4	↑4.4
2/13 02:20	56.8	↑4.4
2/13 02:30	61.3	↑4.5	最大潮位差
2/13 02:40	65.6	↑4.3
2/13 02:50	70.0	↑4.4
2/13 03:00	74.2	↑4.2
2/13 03:10	78.3	↑4.1
2/13 03:20	82.3	↑4.0
2/13 03:30	86.2	↑3.9
2/13 03:40	89.8	↑3.6
2/13 03:50	93.3	↑3.5
2/13 04:00	96.6	↑3.3
2/13 04:10	99.6	↑3.0
2/13 04:20	102.3	↑2.7
2/13 04:30	104.8	↑2.5
2/13 04:40	107.1	↑2.3
2/13 04:50	109.0	↑1.9
2/13 05:00	110.6	↑1.6
2/13 05:10	112.0	↑1.4
2/13 05:20	113.0	↑1.0
2/13 05:30	113.8	↑0.8
2/13 05:40	114.2	↑0.4
2/13 05:50	114.3	↑0.1	満潮
2/13 06:00	114.2	↓-0.1
2/13 06:10	113.7	↓-0.5
2/13 06:20	113.0	↓-0.7
2/13 06:30	112.0	↓-1.0
2/13 06:40	110.8	↓-1.2
2/13 06:50	109.3	↓-1.5
2/13 07:00	107.7	↓-1.6
2/13 07:10	105.8	↓-1.9
2/13 07:20	103.8	↓-2.0
2/13 07:30	101.6	↓-2.2
2/13 07:40	99.3	↓-2.3
2/13 07:50	96.9	↓-2.4
2/13 08:00	94.5	↓-2.4
2/13 08:10	92.0	↓-2.5
2/13 08:20	89.4	↓-2.6
2/13 08:30	86.9	↓-2.5
2/13 08:40	84.4	↓-2.5
2/13 08:50	82.0	↓-2.4
2/13 09:00	79.6	↓-2.4
2/13 09:10	77.3	↓-2.3
2/13 09:20	75.2	↓-2.1
2/13 09:30	73.2	↓-2.0
2/13 09:40	71.3	↓-1.9
2/13 09:50	69.6	↓-1.7
2/13 10:00	68.1	↓-1.5
2/13 10:10	66.8	↓-1.3
2/13 10:20	65.8	↓-1.0
2/13 10:30	64.9	↓-0.9
2/13 10:40	64.3	↓-0.6
2/13 10:50	63.8	↓-0.5
2/13 11:00	63.7	↓-0.1	干潮
2/13 11:10	63.7	0
2/13 11:20	64.0	↑0.3
2/13 11:30	64.5	↑0.5
2/13 11:40	65.2	↑0.7
2/13 11:50	66.2	↑1.0
2/13 12:00	67.4	↑1.2
2/13 12:10	68.7	↑1.3
2/13 12:20	70.3	↑1.6
2/13 12:30	72.0	↑1.7
2/13 12:40	73.8	↑1.8
2/13 12:50	75.9	↑2.1
2/13 13:00	78.0	↑2.1
2/13 13:10	80.3	↑2.3
2/13 13:20	82.6	↑2.3
2/13 13:30	85.1	↑2.5
2/13 13:40	87.6	↑2.5
2/13 13:50	90.1	↑2.5
2/13 14:00	92.6	↑2.5
2/13 14:10	95.1	↑2.5
2/13 14:20	97.7	↑2.6
2/13 14:30	100.1	↑2.4
2/13 14:40	102.5	↑2.4
2/13 14:50	104.8	↑2.3
2/13 15:00	107.0	↑2.2
2/13 15:10	109.0	↑2.0
2/13 15:20	110.9	↑1.9
2/13 15:30	112.7	↑1.8
2/13 15:40	114.2	↑1.5
2/13 15:50	115.5	↑1.3
2/13 16:00	116.6	↑1.1
2/13 16:10	117.5	↑0.9
2/13 16:20	118.1	↑0.6
2/13 16:30	118.4	↑0.3	満潮
2/13 16:40	118.5	↑0.1
2/13 16:50	118.3	↓-0.2
2/13 17:00	117.8	↓-0.5
2/13 17:10	116.9	↓-0.9
2/13 17:20	115.8	↓-1.1
2/13 17:30	114.4	↓-1.4
2/13 17:40	112.7	↓-1.7
2/13 17:50	110.7	↓-2.0
2/13 18:00	108.4	↓-2.3
2/13 18:10	105.8	↓-2.6
2/13 18:20	102.9	↓-2.9
2/13 18:30	99.8	↓-3.1
2/13 18:40	96.5	↓-3.3
2/13 18:50	92.9	↓-3.6
2/13 19:00	89.1	↓-3.8
2/13 19:10	85.2	↓-3.9
2/13 19:20	81.0	↓-4.2
2/13 19:30	76.8	↓-4.2
2/13 19:40	72.5	↓-4.3
2/13 19:50	68.0	↓-4.5	最大潮位差
2/13 20:00	63.6	↓-4.4
2/13 20:10	59.1	↓-4.5	最大潮位差
2/13 20:20	54.6	↓-4.5	最大潮位差
2/13 20:30	50.2	↓-4.4
2/13 20:40	45.8	↓-4.4
2/13 20:50	41.5	↓-4.3
2/13 21:00	37.4	↓-4.1
2/13 21:10	33.4	↓-4.0
2/13 21:20	29.5	↓-3.9
2/13 21:30	25.9	↓-3.6
2/13 21:40	22.5	↓-3.4
2/13 21:50	19.3	↓-3.2
2/13 22:00	16.4	↓-2.9
2/13 22:10	13.8	↓-2.6
2/13 22:20	11.4	↓-2.4
2/13 22:30	9.4	↓-2.0
2/13 22:40	7.7	↓-1.7
2/13 22:50	6.3	↓-1.4
2/13 23:00	5.2	↓-1.1
2/13 23:10	4.5	↓-0.7
2/13 23:20	4.1	↓-0.4	干潮
2/13 23:30	4.1	0
2/13 23:40	4.4	↑0.3
2/13 23:50	5.0	↑0.6