22 (土)	04:51	10:27	16:17	22:52
	119cm	41cm	130cm	8cm
大潮 出 06:18 入 17:26 出 06:11 入 18:13

日立（茨城）2031年02月22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
2/22 00:00	20.6	↑3.5
2/22 00:10	24.4	↑3.8
2/22 00:20	28.3	↑3.9
2/22 00:30	32.5	↑4.2
2/22 00:40	36.9	↑4.4
2/22 00:50	41.4	↑4.5
2/22 01:00	45.9	↑4.5
2/22 01:10	50.6	↑4.7
2/22 01:20	55.3	↑4.7
2/22 01:30	60.1	↑4.8
2/22 01:40	64.7	↑4.6
2/22 01:50	69.4	↑4.7
2/22 02:00	74.0	↑4.6
2/22 02:10	78.4	↑4.4
2/22 02:20	82.8	↑4.4
2/22 02:30	86.9	↑4.1
2/22 02:40	91.0	↑4.1
2/22 02:50	94.8	↑3.8
2/22 03:00	98.4	↑3.6
2/22 03:10	101.7	↑3.3
2/22 03:20	104.8	↑3.1
2/22 03:30	107.7	↑2.9
2/22 03:40	110.2	↑2.5
2/22 03:50	112.5	↑2.3
2/22 04:00	114.4	↑1.9
2/22 04:10	116.0	↑1.6
2/22 04:20	117.2	↑1.2
2/22 04:30	118.1	↑0.9
2/22 04:40	118.7	↑0.6
2/22 04:50	118.9	↑0.2	満潮
2/22 05:00	118.7	↓-0.2
2/22 05:10	118.1	↓-0.6
2/22 05:20	117.2	↓-0.9
2/22 05:30	116.0	↓-1.2
2/22 05:40	114.4	↓-1.6
2/22 05:50	112.5	↓-1.9
2/22 06:00	110.3	↓-2.2
2/22 06:10	107.8	↓-2.5
2/22 06:20	105.0	↓-2.8
2/22 06:30	102.1	↓-2.9
2/22 06:40	98.9	↓-3.2
2/22 06:50	95.6	↓-3.3
2/22 07:00	92.1	↓-3.5
2/22 07:10	88.6	↓-3.5
2/22 07:20	84.9	↓-3.7
2/22 07:30	81.3	↓-3.6
2/22 07:40	77.7	↓-3.6
2/22 07:50	74.1	↓-3.6
2/22 08:00	70.6	↓-3.5
2/22 08:10	67.1	↓-3.5
2/22 08:20	63.8	↓-3.3
2/22 08:30	60.6	↓-3.2
2/22 08:40	57.6	↓-3.0
2/22 08:50	54.8	↓-2.8
2/22 09:00	52.2	↓-2.6
2/22 09:10	49.8	↓-2.4
2/22 09:20	47.7	↓-2.1
2/22 09:30	45.8	↓-1.9
2/22 09:40	44.3	↓-1.5
2/22 09:50	42.9	↓-1.4
2/22 10:00	41.9	↓-1.0
2/22 10:10	41.3	↓-0.6
2/22 10:20	40.9	↓-0.4	干潮
2/22 10:30	40.9	0
2/22 10:40	41.2	↑0.3
2/22 10:50	41.8	↑0.6
2/22 11:00	42.8	↑1.0
2/22 11:10	44.1	↑1.3
2/22 11:20	45.8	↑1.7
2/22 11:30	47.8	↑2.0
2/22 11:40	50.1	↑2.3
2/22 11:50	52.7	↑2.6
2/22 12:00	55.5	↑2.8
2/22 12:10	58.7	↑3.2
2/22 12:20	62.0	↑3.3
2/22 12:30	65.5	↑3.5
2/22 12:40	69.2	↑3.7
2/22 12:50	73.1	↑3.9
2/22 13:00	77.0	↑3.9
2/22 13:10	81.0	↑4.0
2/22 13:20	85.0	↑4.0
2/22 13:30	89.0	↑4.0
2/22 13:40	92.9	↑3.9
2/22 13:50	96.8	↑3.9
2/22 14:00	100.6	↑3.8
2/22 14:10	104.2	↑3.6
2/22 14:20	107.7	↑3.5
2/22 14:30	110.9	↑3.2
2/22 14:40	114.0	↑3.1
2/22 14:50	116.8	↑2.8
2/22 15:00	119.4	↑2.6
2/22 15:10	121.7	↑2.3
2/22 15:20	123.7	↑2.0
2/22 15:30	125.4	↑1.7
2/22 15:40	126.8	↑1.4
2/22 15:50	127.9	↑1.1
2/22 16:00	128.6	↑0.7
2/22 16:10	129.0	↑0.4	満潮
2/22 16:20	129.1	↑0.1
2/22 16:30	128.7	↓-0.4
2/22 16:40	128.0	↓-0.7
2/22 16:50	127.0	↓-1.0
2/22 17:00	125.6	↓-1.4
2/22 17:10	123.8	↓-1.8
2/22 17:20	121.6	↓-2.2
2/22 17:30	119.1	↓-2.5
2/22 17:40	116.3	↓-2.8
2/22 17:50	113.1	↓-3.2
2/22 18:00	109.6	↓-3.5
2/22 18:10	105.9	↓-3.7
2/22 18:20	101.8	↓-4.1
2/22 18:30	97.6	↓-4.2
2/22 18:40	93.1	↓-4.5
2/22 18:50	88.5	↓-4.6
2/22 19:00	83.8	↓-4.7
2/22 19:10	78.9	↓-4.9
2/22 19:20	74.0	↓-4.9
2/22 19:30	69.1	↓-4.9
2/22 19:40	64.1	↓-5.0	最大潮位差
2/22 19:50	59.3	↓-4.8
2/22 20:00	54.4	↓-4.9
2/22 20:10	49.7	↓-4.7
2/22 20:20	45.2	↓-4.5
2/22 20:30	40.8	↓-4.4
2/22 20:40	36.5	↓-4.3
2/22 20:50	32.5	↓-4.0
2/22 21:00	28.8	↓-3.7
2/22 21:10	25.2	↓-3.6
2/22 21:20	22.0	↓-3.2
2/22 21:30	19.0	↓-3.0
2/22 21:40	16.3	↓-2.7
2/22 21:50	14.0	↓-2.3
2/22 22:00	12.0	↓-2.0
2/22 22:10	10.3	↓-1.7
2/22 22:20	8.9	↓-1.4
2/22 22:30	8.0	↓-0.9
2/22 22:40	7.4	↓-0.6
2/22 22:50	7.2	↓-0.2	干潮
2/22 23:00	7.3	↑0.1
2/22 23:10	7.9	↑0.6
2/22 23:20	8.9	↑1.0
2/22 23:30	10.2	↑1.3
2/22 23:40	11.9	↑1.7
2/22 23:50	14.0	↑2.1