20 (日)	03:42	08:04	12:55	20:51
	106cm	89cm	113cm	0cm
中潮 出 06:21 入 17:24 出 04:21 入 14:11

日立（茨城）2039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	63.3	↑3.2
2/20 00:10	66.5	↑3.2
2/20 00:20	69.7	↑3.2
2/20 00:30	72.8	↑3.1
2/20 00:40	75.8	↑3.0
2/20 00:50	78.7	↑2.9
2/20 01:00	81.5	↑2.8
2/20 01:10	84.2	↑2.7
2/20 01:20	86.8	↑2.6
2/20 01:30	89.2	↑2.4
2/20 01:40	91.5	↑2.3
2/20 01:50	93.7	↑2.2
2/20 02:00	95.7	↑2.0
2/20 02:10	97.5	↑1.8
2/20 02:20	99.1	↑1.6
2/20 02:30	100.6	↑1.5
2/20 02:40	101.9	↑1.3
2/20 02:50	102.9	↑1.0
2/20 03:00	103.8	↑0.9
2/20 03:10	104.5	↑0.7
2/20 03:20	105.0	↑0.5
2/20 03:30	105.3	↑0.3
2/20 03:40	105.4	↑0.1	満潮
2/20 03:50	105.3	↓-0.1
2/20 04:00	105.1	↓-0.2
2/20 04:10	104.7	↓-0.4
2/20 04:20	104.2	↓-0.5
2/20 04:30	103.5	↓-0.7
2/20 04:40	102.8	↓-0.7
2/20 04:50	102.0	↓-0.8
2/20 05:00	101.1	↓-0.9
2/20 05:10	100.1	↓-1.0
2/20 05:20	99.2	↓-0.9
2/20 05:30	98.2	↓-1.0
2/20 05:40	97.2	↓-1.0
2/20 05:50	96.2	↓-1.0
2/20 06:00	95.2	↓-1.0
2/20 06:10	94.3	↓-0.9
2/20 06:20	93.4	↓-0.9
2/20 06:30	92.5	↓-0.9
2/20 06:40	91.7	↓-0.8
2/20 06:50	91.0	↓-0.7
2/20 07:00	90.4	↓-0.6
2/20 07:10	89.8	↓-0.6
2/20 07:20	89.4	↓-0.4
2/20 07:30	89.0	↓-0.4
2/20 07:40	88.7	↓-0.3
2/20 07:50	88.5	↓-0.2
2/20 08:00	88.4	↓-0.1	干潮
2/20 08:10	88.5	↑0.1
2/20 08:20	88.6	↑0.1
2/20 08:30	88.9	↑0.3
2/20 08:40	89.2	↑0.3
2/20 08:50	89.7	↑0.5
2/20 09:00	90.3	↑0.6
2/20 09:10	91.0	↑0.7
2/20 09:20	91.8	↑0.8
2/20 09:30	92.7	↑0.9
2/20 09:40	93.7	↑1.0
2/20 09:50	94.8	↑1.1
2/20 10:00	96.0	↑1.2
2/20 10:10	97.2	↑1.2
2/20 10:20	98.5	↑1.3
2/20 10:30	99.8	↑1.3
2/20 10:40	101.1	↑1.3
2/20 10:50	102.4	↑1.3
2/20 11:00	103.7	↑1.3
2/20 11:10	104.9	↑1.2
2/20 11:20	106.1	↑1.2
2/20 11:30	107.3	↑1.2
2/20 11:40	108.3	↑1.0
2/20 11:50	109.2	↑0.9
2/20 12:00	110.1	↑0.9
2/20 12:10	110.8	↑0.7
2/20 12:20	111.4	↑0.6
2/20 12:30	111.8	↑0.4
2/20 12:40	112.1	↑0.3
2/20 12:50	112.2	↑0.1	満潮
2/20 13:00	112.2	0
2/20 13:10	112.0	↓-0.2
2/20 13:20	111.7	↓-0.3
2/20 13:30	111.2	↓-0.5
2/20 13:40	110.5	↓-0.7
2/20 13:50	109.6	↓-0.9
2/20 14:00	108.5	↓-1.1
2/20 14:10	107.3	↓-1.2
2/20 14:20	105.8	↓-1.5
2/20 14:30	104.2	↓-1.6
2/20 14:40	102.3	↓-1.9
2/20 14:50	100.3	↓-2.0
2/20 15:00	98.0	↓-2.3
2/20 15:10	95.6	↓-2.4
2/20 15:20	92.9	↓-2.7
2/20 15:30	90.1	↓-2.8
2/20 15:40	87.1	↓-3.0
2/20 15:50	83.9	↓-3.2
2/20 16:00	80.6	↓-3.3
2/20 16:10	77.1	↓-3.5
2/20 16:20	73.5	↓-3.6
2/20 16:30	69.8	↓-3.7
2/20 16:40	66.0	↓-3.8
2/20 16:50	62.2	↓-3.8
2/20 17:00	58.3	↓-3.9
2/20 17:10	54.3	↓-4.0	最大潮位差
2/20 17:20	50.4	↓-3.9
2/20 17:30	46.5	↓-3.9
2/20 17:40	42.7	↓-3.8
2/20 17:50	38.9	↓-3.8
2/20 18:00	35.2	↓-3.7
2/20 18:10	31.6	↓-3.6
2/20 18:20	28.1	↓-3.5
2/20 18:30	24.8	↓-3.3
2/20 18:40	21.6	↓-3.2
2/20 18:50	18.6	↓-3.0
2/20 19:00	15.8	↓-2.8
2/20 19:10	13.2	↓-2.6
2/20 19:20	10.8	↓-2.4
2/20 19:30	8.6	↓-2.2
2/20 19:40	6.6	↓-2.0
2/20 19:50	4.8	↓-1.8
2/20 20:00	3.3	↓-1.5
2/20 20:10	2.1	↓-1.2
2/20 20:20	1.1	↓-1.0
2/20 20:30	0.4	↓-0.7
2/20 20:40	-0.1	↓-0.5
2/20 20:50	-0.2	↓-0.1	干潮
2/20 21:00	-0.1	↑0.1
2/20 21:10	0.4	↑0.5
2/20 21:20	1.1	↑0.7
2/20 21:30	2.1	↑1.0
2/20 21:40	3.4	↑1.3
2/20 21:50	5.0	↑1.6
2/20 22:00	6.9	↑1.9
2/20 22:10	9.1	↑2.2
2/20 22:20	11.5	↑2.4
2/20 22:30	14.1	↑2.6
2/20 22:40	17.0	↑2.9
2/20 22:50	20.1	↑3.1
2/20 23:00	23.3	↑3.2
2/20 23:10	26.8	↑3.5
2/20 23:20	30.3	↑3.5
2/20 23:30	34.0	↑3.7
2/20 23:40	37.8	↑3.8
2/20 23:50	41.7	↑3.9