20 (金)	03:26	07:09	11:36	19:55
	102cm	94cm	108cm	2cm
若潮 出 06:21 入 17:24 出 13:23 入 03:59

那珂湊（茨城）2043年02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
2/20 00:00	76.2	↑2.5
2/20 00:10	78.7	↑2.5
2/20 00:20	81.0	↑2.3
2/20 00:30	83.2	↑2.2
2/20 00:40	85.3	↑2.1
2/20 00:50	87.2	↑1.9
2/20 01:00	89.1	↑1.9
2/20 01:10	90.8	↑1.7
2/20 01:20	92.3	↑1.5
2/20 01:30	93.7	↑1.4
2/20 01:40	95.0	↑1.3
2/20 01:50	96.2	↑1.2
2/20 02:00	97.2	↑1.0
2/20 02:10	98.1	↑0.9
2/20 02:20	98.9	↑0.8
2/20 02:30	99.5	↑0.6
2/20 02:40	100.0	↑0.5
2/20 02:50	100.4	↑0.4
2/20 03:00	100.7	↑0.3
2/20 03:10	100.9	↑0.2
2/20 03:20	101.0	↑0.1	満潮
2/20 03:30	101.0	0
2/20 03:40	100.9	↓-0.1
2/20 03:50	100.8	↓-0.1
2/20 04:00	100.5	↓-0.3
2/20 04:10	100.3	↓-0.2
2/20 04:20	99.9	↓-0.4
2/20 04:30	99.5	↓-0.4
2/20 04:40	99.1	↓-0.4
2/20 04:50	98.6	↓-0.5
2/20 05:00	98.1	↓-0.5
2/20 05:10	97.6	↓-0.5
2/20 05:20	97.1	↓-0.5
2/20 05:30	96.6	↓-0.5
2/20 05:40	96.2	↓-0.4
2/20 05:50	95.7	↓-0.5
2/20 06:00	95.3	↓-0.4
2/20 06:10	94.9	↓-0.4
2/20 06:20	94.6	↓-0.3
2/20 06:30	94.3	↓-0.3
2/20 06:40	94.1	↓-0.2
2/20 06:50	93.9	↓-0.2
2/20 07:00	93.8	↓-0.1	干潮
2/20 07:10	93.8	0
2/20 07:20	93.8	0
2/20 07:30	94.0	↑0.2
2/20 07:40	94.2	↑0.2
2/20 07:50	94.5	↑0.3
2/20 08:00	94.8	↑0.3
2/20 08:10	95.2	↑0.4
2/20 08:20	95.7	↑0.5
2/20 08:30	96.3	↑0.6
2/20 08:40	96.9	↑0.6
2/20 08:50	97.6	↑0.7
2/20 09:00	98.3	↑0.7
2/20 09:10	99.1	↑0.8
2/20 09:20	99.9	↑0.8
2/20 09:30	100.7	↑0.8
2/20 09:40	101.5	↑0.8
2/20 09:50	102.3	↑0.8
2/20 10:00	103.1	↑0.8
2/20 10:10	103.9	↑0.8
2/20 10:20	104.6	↑0.7
2/20 10:30	105.3	↑0.7
2/20 10:40	105.9	↑0.6
2/20 10:50	106.4	↑0.5
2/20 11:00	106.8	↑0.4
2/20 11:10	107.2	↑0.4
2/20 11:20	107.4	↑0.2
2/20 11:30	107.6	↑0.2	満潮
2/20 11:40	107.6	0
2/20 11:50	107.4	↓-0.2
2/20 12:00	107.1	↓-0.3
2/20 12:10	106.7	↓-0.4
2/20 12:20	106.1	↓-0.6
2/20 12:30	105.4	↓-0.7
2/20 12:40	104.5	↓-0.9
2/20 12:50	103.4	↓-1.1
2/20 13:00	102.1	↓-1.3
2/20 13:10	100.7	↓-1.4
2/20 13:20	99.1	↓-1.6
2/20 13:30	97.4	↓-1.7
2/20 13:40	95.5	↓-1.9
2/20 13:50	93.4	↓-2.1
2/20 14:00	91.2	↓-2.2
2/20 14:10	88.8	↓-2.4
2/20 14:20	86.3	↓-2.5
2/20 14:30	83.6	↓-2.7
2/20 14:40	80.9	↓-2.7
2/20 14:50	78.0	↓-2.9
2/20 15:00	75.0	↓-3.0
2/20 15:10	71.9	↓-3.1
2/20 15:20	68.7	↓-3.2
2/20 15:30	65.4	↓-3.3
2/20 15:40	62.1	↓-3.3
2/20 15:50	58.7	↓-3.4
2/20 16:00	55.3	↓-3.4
2/20 16:10	51.9	↓-3.4
2/20 16:20	48.5	↓-3.4
2/20 16:30	45.0	↓-3.5
2/20 16:40	41.7	↓-3.3
2/20 16:50	38.3	↓-3.4
2/20 17:00	35.0	↓-3.3
2/20 17:10	31.8	↓-3.2
2/20 17:20	28.7	↓-3.1
2/20 17:30	25.6	↓-3.1
2/20 17:40	22.7	↓-2.9
2/20 17:50	20.0	↓-2.7
2/20 18:00	17.3	↓-2.7
2/20 18:10	14.9	↓-2.4
2/20 18:20	12.6	↓-2.3
2/20 18:30	10.5	↓-2.1
2/20 18:40	8.6	↓-1.9
2/20 18:50	6.9	↓-1.7
2/20 19:00	5.5	↓-1.4
2/20 19:10	4.3	↓-1.2
2/20 19:20	3.3	↓-1.0
2/20 19:30	2.5	↓-0.8
2/20 19:40	2.0	↓-0.5
2/20 19:50	1.8	↓-0.2	干潮
2/20 20:00	1.8	0
2/20 20:10	2.1	↑0.3
2/20 20:20	2.7	↑0.6
2/20 20:30	3.5	↑0.8
2/20 20:40	4.5	↑1.0
2/20 20:50	5.8	↑1.3
2/20 21:00	7.3	↑1.5
2/20 21:10	9.1	↑1.8
2/20 21:20	11.1	↑2.0
2/20 21:30	13.3	↑2.2
2/20 21:40	15.7	↑2.4
2/20 21:50	18.3	↑2.6
2/20 22:00	21.0	↑2.7
2/20 22:10	23.9	↑2.9
2/20 22:20	27.0	↑3.1
2/20 22:30	30.2	↑3.2
2/20 22:40	33.4	↑3.2
2/20 22:50	36.8	↑3.4
2/20 23:00	40.3	↑3.5
2/20 23:10	43.8	↑3.5
2/20 23:20	47.3	↑3.5
2/20 23:30	50.8	↑3.5
2/20 23:40	54.4	↑3.6	最大潮位差
2/20 23:50	57.9	↑3.5