20 (土)	04:35	09:43	15:10	22:11
	115cm	68cm	128cm	-9cm
大潮 出 06:21 入 17:24 出 16:37 入 05:42

日立（茨城）2027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	27.5	↑4.3
2/20 00:10	31.9	↑4.4
2/20 00:20	36.4	↑4.5
2/20 00:30	41.0	↑4.6
2/20 00:40	45.6	↑4.6
2/20 00:50	50.2	↑4.6
2/20 01:00	54.8	↑4.6
2/20 01:10	59.4	↑4.6
2/20 01:20	63.9	↑4.5
2/20 01:30	68.3	↑4.4
2/20 01:40	72.7	↑4.4
2/20 01:50	76.9	↑4.2
2/20 02:00	80.9	↑4.0
2/20 02:10	84.8	↑3.9
2/20 02:20	88.5	↑3.7
2/20 02:30	92.1	↑3.6
2/20 02:40	95.4	↑3.3
2/20 02:50	98.5	↑3.1
2/20 03:00	101.3	↑2.8
2/20 03:10	103.9	↑2.6
2/20 03:20	106.3	↑2.4
2/20 03:30	108.3	↑2.0
2/20 03:40	110.1	↑1.8
2/20 03:50	111.6	↑1.5
2/20 04:00	112.8	↑1.2
2/20 04:10	113.7	↑0.9
2/20 04:20	114.2	↑0.5
2/20 04:30	114.5	↑0.3	満潮
2/20 04:40	114.5	0
2/20 04:50	114.2	↓-0.3
2/20 05:00	113.6	↓-0.6
2/20 05:10	112.7	↓-0.9
2/20 05:20	111.6	↓-1.1
2/20 05:30	110.3	↓-1.3
2/20 05:40	108.7	↓-1.6
2/20 05:50	107.0	↓-1.7
2/20 06:00	105.1	↓-1.9
2/20 06:10	103.0	↓-2.1
2/20 06:20	100.9	↓-2.1
2/20 06:30	98.6	↓-2.3
2/20 06:40	96.3	↓-2.3
2/20 06:50	94.0	↓-2.3
2/20 07:00	91.7	↓-2.3
2/20 07:10	89.3	↓-2.4
2/20 07:20	87.0	↓-2.3
2/20 07:30	84.8	↓-2.2
2/20 07:40	82.6	↓-2.2
2/20 07:50	80.6	↓-2.0
2/20 08:00	78.6	↓-2.0
2/20 08:10	76.8	↓-1.8
2/20 08:20	75.1	↓-1.7
2/20 08:30	73.5	↓-1.6
2/20 08:40	72.1	↓-1.4
2/20 08:50	70.9	↓-1.2
2/20 09:00	69.9	↓-1.0
2/20 09:10	69.1	↓-0.8
2/20 09:20	68.5	↓-0.6
2/20 09:30	68.1	↓-0.4
2/20 09:40	68.0	↓-0.1	干潮
2/20 09:50	68.1	↑0.1
2/20 10:00	68.4	↑0.3
2/20 10:10	68.9	↑0.5
2/20 10:20	69.8	↑0.9
2/20 10:30	70.8	↑1.0
2/20 10:40	72.1	↑1.3
2/20 10:50	73.7	↑1.6
2/20 11:00	75.4	↑1.7
2/20 11:10	77.4	↑2.0
2/20 11:20	79.5	↑2.1
2/20 11:30	81.9	↑2.4
2/20 11:40	84.3	↑2.4
2/20 11:50	86.9	↑2.6
2/20 12:00	89.7	↑2.8
2/20 12:10	92.5	↑2.8
2/20 12:20	95.3	↑2.8
2/20 12:30	98.2	↑2.9
2/20 12:40	101.0	↑2.8
2/20 12:50	103.8	↑2.8
2/20 13:00	106.6	↑2.8
2/20 13:10	109.3	↑2.7
2/20 13:20	111.9	↑2.6
2/20 13:30	114.3	↑2.4
2/20 13:40	116.6	↑2.3
2/20 13:50	118.7	↑2.1
2/20 14:00	120.6	↑1.9
2/20 14:10	122.3	↑1.7
2/20 14:20	123.8	↑1.5
2/20 14:30	125.0	↑1.2
2/20 14:40	126.0	↑1.0
2/20 14:50	126.7	↑0.7
2/20 15:00	127.1	↑0.4	満潮
2/20 15:10	127.3	↑0.2	満潮
2/20 15:20	127.1	↓-0.2
2/20 15:30	126.6	↓-0.5
2/20 15:40	125.8	↓-0.8
2/20 15:50	124.7	↓-1.1
2/20 16:00	123.2	↓-1.5
2/20 16:10	121.4	↓-1.8
2/20 16:20	119.3	↓-2.1
2/20 16:30	116.8	↓-2.5
2/20 16:40	114.0	↓-2.8
2/20 16:50	110.8	↓-3.2
2/20 17:00	107.4	↓-3.4
2/20 17:10	103.7	↓-3.7
2/20 17:20	99.7	↓-4.0
2/20 17:30	95.4	↓-4.3
2/20 17:40	90.9	↓-4.5
2/20 17:50	86.2	↓-4.7
2/20 18:00	81.4	↓-4.8
2/20 18:10	76.3	↓-5.1
2/20 18:20	71.2	↓-5.1
2/20 18:30	66.0	↓-5.2
2/20 18:40	60.8	↓-5.2
2/20 18:50	55.5	↓-5.3	最大潮位差
2/20 19:00	50.3	↓-5.2
2/20 19:10	45.2	↓-5.1
2/20 19:20	40.1	↓-5.1
2/20 19:30	35.1	↓-5.0
2/20 19:40	30.3	↓-4.8
2/20 19:50	25.7	↓-4.6
2/20 20:00	21.3	↓-4.4
2/20 20:10	17.1	↓-4.2
2/20 20:20	13.1	↓-4.0
2/20 20:30	9.4	↓-3.7
2/20 20:40	6.0	↓-3.4
2/20 20:50	2.9	↓-3.1
2/20 21:00	0.1	↓-2.8
2/20 21:10	-2.3	↓-2.4
2/20 21:20	-4.4	↓-2.1
2/20 21:30	-6.2	↓-1.8
2/20 21:40	-7.5	↓-1.3
2/20 21:50	-8.5	↓-1.0
2/20 22:00	-9.1	↓-0.6
2/20 22:10	-9.3	↓-0.2	干潮
2/20 22:20	-9.1	↑0.2
2/20 22:30	-8.5	↑0.6
2/20 22:40	-7.5	↑1.0
2/20 22:50	-6.1	↑1.4
2/20 23:00	-4.3	↑1.8
2/20 23:10	-2.1	↑2.2
2/20 23:20	0.5	↑2.6
2/20 23:30	3.4	↑2.9
2/20 23:40	6.6	↑3.2
2/20 23:50	10.1	↑3.5