19 (水)	03:15	08:03	13:21	20:43
	103cm	77cm	114cm	2cm
中潮 出 06:22 入 17:23 出 04:10 入 14:45

那珂湊（茨城）2031年02月19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
2/19 00:00	67.7	↑3.3
2/19 00:10	71.0	↑3.3
2/19 00:20	74.1	↑3.1
2/19 00:30	77.2	↑3.1
2/19 00:40	80.1	↑2.9
2/19 00:50	82.9	↑2.8
2/19 01:00	85.6	↑2.7
2/19 01:10	88.0	↑2.4
2/19 01:20	90.4	↑2.4
2/19 01:30	92.5	↑2.1
2/19 01:40	94.4	↑1.9
2/19 01:50	96.2	↑1.8
2/19 02:00	97.7	↑1.5
2/19 02:10	99.1	↑1.4
2/19 02:20	100.2	↑1.1
2/19 02:30	101.2	↑1.0
2/19 02:40	101.9	↑0.7
2/19 02:50	102.4	↑0.5
2/19 03:00	102.8	↑0.4
2/19 03:10	103.0	↑0.2	満潮
2/19 03:20	102.9	↓-0.1
2/19 03:30	102.7	↓-0.2
2/19 03:40	102.4	↓-0.3
2/19 03:50	101.8	↓-0.6
2/19 04:00	101.1	↓-0.7
2/19 04:10	100.3	↓-0.8
2/19 04:20	99.4	↓-0.9
2/19 04:30	98.3	↓-1.1
2/19 04:40	97.2	↓-1.1
2/19 04:50	95.9	↓-1.3
2/19 05:00	94.6	↓-1.3
2/19 05:10	93.2	↓-1.4
2/19 05:20	91.8	↓-1.4
2/19 05:30	90.4	↓-1.4
2/19 05:40	89.0	↓-1.4
2/19 05:50	87.6	↓-1.4
2/19 06:00	86.2	↓-1.4
2/19 06:10	84.8	↓-1.4
2/19 06:20	83.5	↓-1.3
2/19 06:30	82.3	↓-1.2
2/19 06:40	81.1	↓-1.2
2/19 06:50	80.1	↓-1.0
2/19 07:00	79.1	↓-1.0
2/19 07:10	78.3	↓-0.8
2/19 07:20	77.6	↓-0.7
2/19 07:30	77.0	↓-0.6
2/19 07:40	76.6	↓-0.4
2/19 07:50	76.4	↓-0.2
2/19 08:00	76.2	↓-0.2	干潮
2/19 08:10	76.3	↑0.1
2/19 08:20	76.5	↑0.2
2/19 08:30	76.9	↑0.4
2/19 08:40	77.4	↑0.5
2/19 08:50	78.1	↑0.7
2/19 09:00	79.0	↑0.9
2/19 09:10	80.0	↑1.0
2/19 09:20	81.1	↑1.1
2/19 09:30	82.4	↑1.3
2/19 09:40	83.7	↑1.3
2/19 09:50	85.2	↑1.5
2/19 10:00	86.8	↑1.6
2/19 10:10	88.5	↑1.7
2/19 10:20	90.2	↑1.7
2/19 10:30	92.0	↑1.8
2/19 10:40	93.8	↑1.8
2/19 10:50	95.7	↑1.9
2/19 11:00	97.5	↑1.8
2/19 11:10	99.3	↑1.8
2/19 11:20	101.1	↑1.8
2/19 11:30	102.8	↑1.7
2/19 11:40	104.5	↑1.7
2/19 11:50	106.0	↑1.5
2/19 12:00	107.5	↑1.5
2/19 12:10	108.9	↑1.4
2/19 12:20	110.1	↑1.2
2/19 12:30	111.1	↑1.0
2/19 12:40	112.0	↑0.9
2/19 12:50	112.7	↑0.7
2/19 13:00	113.3	↑0.6
2/19 13:10	113.6	↑0.3
2/19 13:20	113.7	↑0.1	満潮
2/19 13:30	113.6	↓-0.1
2/19 13:40	113.2	↓-0.4
2/19 13:50	112.7	↓-0.5
2/19 14:00	111.9	↓-0.8
2/19 14:10	110.8	↓-1.1
2/19 14:20	109.6	↓-1.2
2/19 14:30	108.0	↓-1.6
2/19 14:40	106.3	↓-1.7
2/19 14:50	104.3	↓-2.0
2/19 15:00	102.1	↓-2.2
2/19 15:10	99.7	↓-2.4
2/19 15:20	97.0	↓-2.7
2/19 15:30	94.2	↓-2.8
2/19 15:40	91.1	↓-3.1
2/19 15:50	87.9	↓-3.2
2/19 16:00	84.6	↓-3.3
2/19 16:10	81.0	↓-3.6
2/19 16:20	77.4	↓-3.6
2/19 16:30	73.6	↓-3.8
2/19 16:40	69.7	↓-3.9
2/19 16:50	65.8	↓-3.9
2/19 17:00	61.8	↓-4.0
2/19 17:10	57.8	↓-4.0
2/19 17:20	53.7	↓-4.1	最大潮位差
2/19 17:30	49.7	↓-4.0
2/19 17:40	45.7	↓-4.0
2/19 17:50	41.7	↓-4.0
2/19 18:00	37.9	↓-3.8
2/19 18:10	34.1	↓-3.8
2/19 18:20	30.4	↓-3.7
2/19 18:30	26.9	↓-3.5
2/19 18:40	23.6	↓-3.3
2/19 18:50	20.4	↓-3.2
2/19 19:00	17.4	↓-3.0
2/19 19:10	14.7	↓-2.7
2/19 19:20	12.1	↓-2.6
2/19 19:30	9.9	↓-2.2
2/19 19:40	7.9	↓-2.0
2/19 19:50	6.1	↓-1.8
2/19 20:00	4.7	↓-1.4
2/19 20:10	3.6	↓-1.1
2/19 20:20	2.7	↓-0.9
2/19 20:30	2.2	↓-0.5
2/19 20:40	1.9	↓-0.3	干潮
2/19 20:50	2.0	↑0.1
2/19 21:00	2.4	↑0.4
2/19 21:10	3.1	↑0.7
2/19 21:20	4.1	↑1.0
2/19 21:30	5.5	↑1.4
2/19 21:40	7.0	↑1.5
2/19 21:50	8.9	↑1.9
2/19 22:00	11.1	↑2.2
2/19 22:10	13.5	↑2.4
2/19 22:20	16.1	↑2.6
2/19 22:30	18.9	↑2.8
2/19 22:40	22.0	↑3.1
2/19 22:50	25.2	↑3.2
2/19 23:00	28.6	↑3.4
2/19 23:10	32.2	↑3.6
2/19 23:20	35.8	↑3.6
2/19 23:30	39.6	↑3.8
2/19 23:40	43.5	↑3.9
2/19 23:50	47.4	↑3.9