20 (土)	05:16	10:37	16:14	23:05
	122cm	59cm	134cm	-9cm
大潮 出 06:20 入 17:25 出 18:05 入 06:48

大洗（茨城）2038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	5.4	↑3.4
2/20 00:10	9.2	↑3.8
2/20 00:20	13.3	↑4.1
2/20 00:30	17.6	↑4.3
2/20 00:40	22.2	↑4.6
2/20 00:50	27.0	↑4.8
2/20 01:00	31.9	↑4.9
2/20 01:10	36.9	↑5.0
2/20 01:20	42.1	↑5.2
2/20 01:30	47.3	↑5.2
2/20 01:40	52.5	↑5.2
2/20 01:50	57.8	↑5.3
2/20 02:00	62.9	↑5.1
2/20 02:10	68.1	↑5.2
2/20 02:20	73.1	↑5.0
2/20 02:30	78.0	↑4.9
2/20 02:40	82.7	↑4.7
2/20 02:50	87.3	↑4.6
2/20 03:00	91.6	↑4.3
2/20 03:10	95.7	↑4.1
2/20 03:20	99.6	↑3.9
2/20 03:30	103.2	↑3.6
2/20 03:40	106.5	↑3.3
2/20 03:50	109.5	↑3.0
2/20 04:00	112.3	↑2.8
2/20 04:10	114.6	↑2.3
2/20 04:20	116.7	↑2.1
2/20 04:30	118.4	↑1.7
2/20 04:40	119.8	↑1.4
2/20 04:50	120.8	↑1.0
2/20 05:00	121.5	↑0.7
2/20 05:10	121.9	↑0.4	満潮
2/20 05:20	121.9	0
2/20 05:30	121.6	↓-0.3
2/20 05:40	120.9	↓-0.7
2/20 05:50	120.0	↓-0.9
2/20 06:00	118.7	↓-1.3
2/20 06:10	117.2	↓-1.5
2/20 06:20	115.4	↓-1.8
2/20 06:30	113.3	↓-2.1
2/20 06:40	111.1	↓-2.2
2/20 06:50	108.6	↓-2.5
2/20 07:00	106.0	↓-2.6
2/20 07:10	103.2	↓-2.8
2/20 07:20	100.3	↓-2.9
2/20 07:30	97.3	↓-3.0
2/20 07:40	94.2	↓-3.1
2/20 07:50	91.2	↓-3.0
2/20 08:00	88.1	↓-3.1
2/20 08:10	85.0	↓-3.1
2/20 08:20	82.1	↓-2.9
2/20 08:30	79.2	↓-2.9
2/20 08:40	76.4	↓-2.8
2/20 08:50	73.7	↓-2.7
2/20 09:00	71.2	↓-2.5
2/20 09:10	68.9	↓-2.3
2/20 09:20	66.7	↓-2.2
2/20 09:30	64.8	↓-1.9
2/20 09:40	63.1	↓-1.7
2/20 09:50	61.7	↓-1.4
2/20 10:00	60.6	↓-1.1
2/20 10:10	59.7	↓-0.9
2/20 10:20	59.1	↓-0.6
2/20 10:30	58.7	↓-0.4	干潮
2/20 10:40	58.7	0
2/20 10:50	59.0	↑0.3
2/20 11:00	59.6	↑0.6
2/20 11:10	60.5	↑0.9
2/20 11:20	61.6	↑1.1
2/20 11:30	63.1	↑1.5
2/20 11:40	64.8	↑1.7
2/20 11:50	66.8	↑2.0
2/20 12:00	69.1	↑2.3
2/20 12:10	71.6	↑2.5
2/20 12:20	74.3	↑2.7
2/20 12:30	77.2	↑2.9
2/20 12:40	80.3	↑3.1
2/20 12:50	83.5	↑3.2
2/20 13:00	86.8	↑3.3
2/20 13:10	90.2	↑3.4
2/20 13:20	93.7	↑3.5
2/20 13:30	97.2	↑3.5
2/20 13:40	100.7	↑3.5
2/20 13:50	104.2	↑3.5
2/20 14:00	107.6	↑3.4
2/20 14:10	110.9	↑3.3
2/20 14:20	114.1	↑3.2
2/20 14:30	117.1	↑3.0
2/20 14:40	119.9	↑2.8
2/20 14:50	122.6	↑2.7
2/20 15:00	125.0	↑2.4
2/20 15:10	127.1	↑2.1
2/20 15:20	129.0	↑1.9
2/20 15:30	130.6	↑1.6
2/20 15:40	131.9	↑1.3
2/20 15:50	132.9	↑1.0
2/20 16:00	133.5	↑0.6
2/20 16:10	133.8	↑0.3	満潮
2/20 16:20	133.7	↓-0.1
2/20 16:30	133.3	↓-0.4
2/20 16:40	132.5	↓-0.8
2/20 16:50	131.3	↓-1.2
2/20 17:00	129.7	↓-1.6
2/20 17:10	127.8	↓-1.9
2/20 17:20	125.6	↓-2.2
2/20 17:30	122.9	↓-2.7
2/20 17:40	120.0	↓-2.9
2/20 17:50	116.7	↓-3.3
2/20 18:00	113.0	↓-3.7
2/20 18:10	109.1	↓-3.9
2/20 18:20	104.9	↓-4.2
2/20 18:30	100.4	↓-4.5
2/20 18:40	95.7	↓-4.7
2/20 18:50	90.8	↓-4.9
2/20 19:00	85.7	↓-5.1
2/20 19:10	80.4	↓-5.3
2/20 19:20	75.0	↓-5.4
2/20 19:30	69.6	↓-5.4
2/20 19:40	64.0	↓-5.6	最大潮位差
2/20 19:50	58.5	↓-5.5
2/20 20:00	52.9	↓-5.6	最大潮位差
2/20 20:10	47.5	↓-5.4
2/20 20:20	42.1	↓-5.4
2/20 20:30	36.8	↓-5.3
2/20 20:40	31.7	↓-5.1
2/20 20:50	26.7	↓-5.0
2/20 21:00	22.0	↓-4.7
2/20 21:10	17.5	↓-4.5
2/20 21:20	13.3	↓-4.2
2/20 21:30	9.4	↓-3.9
2/20 21:40	5.8	↓-3.6
2/20 21:50	2.5	↓-3.3
2/20 22:00	-0.4	↓-2.9
2/20 22:10	-2.9	↓-2.5
2/20 22:20	-5.0	↓-2.1
2/20 22:30	-6.6	↓-1.6
2/20 22:40	-7.9	↓-1.3
2/20 22:50	-8.7	↓-0.8
2/20 23:00	-9.1	↓-0.4	干潮
2/20 23:10	-9.1	0
2/20 23:20	-8.6	↑0.5
2/20 23:30	-7.7	↑0.9
2/20 23:40	-6.3	↑1.4
2/20 23:50	-4.6	↑1.7