20 (水)	05:27	11:20	17:19	23:39
	127cm	37cm	131cm	20cm
中潮 出 06:21 入 17:25 出 19:46 入 06:58

大洗（茨城）2030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	14.2	↑2.0
2/20 00:10	16.5	↑2.3
2/20 00:20	19.2	↑2.7
2/20 00:30	22.2	↑3.0
2/20 00:40	25.6	↑3.4
2/20 00:50	29.2	↑3.6
2/20 01:00	33.1	↑3.9
2/20 01:10	37.3	↑4.2
2/20 01:20	41.7	↑4.4
2/20 01:30	46.3	↑4.6
2/20 01:40	51.0	↑4.7
2/20 01:50	55.8	↑4.8
2/20 02:00	60.8	↑5.0	最大潮位差
2/20 02:10	65.7	↑4.9
2/20 02:20	70.7	↑5.0	最大潮位差
2/20 02:30	75.6	↑4.9
2/20 02:40	80.5	↑4.9
2/20 02:50	85.2	↑4.7
2/20 03:00	89.9	↑4.7
2/20 03:10	94.3	↑4.4
2/20 03:20	98.6	↑4.3
2/20 03:30	102.6	↑4.0
2/20 03:40	106.4	↑3.8
2/20 03:50	109.9	↑3.5
2/20 04:00	113.2	↑3.3
2/20 04:10	116.1	↑2.9
2/20 04:20	118.7	↑2.6
2/20 04:30	120.9	↑2.2
2/20 04:40	122.8	↑1.9
2/20 04:50	124.4	↑1.6
2/20 05:00	125.5	↑1.1
2/20 05:10	126.3	↑0.8
2/20 05:20	126.7	↑0.4	満潮
2/20 05:30	126.7	0
2/20 05:40	126.4	↓-0.3
2/20 05:50	125.7	↓-0.7
2/20 06:00	124.6	↓-1.1
2/20 06:10	123.2	↓-1.4
2/20 06:20	121.4	↓-1.8
2/20 06:30	119.4	↓-2.0
2/20 06:40	117.0	↓-2.4
2/20 06:50	114.3	↓-2.7
2/20 07:00	111.3	↓-3.0
2/20 07:10	108.2	↓-3.1
2/20 07:20	104.8	↓-3.4
2/20 07:30	101.2	↓-3.6
2/20 07:40	97.5	↓-3.7
2/20 07:50	93.6	↓-3.9
2/20 08:00	89.6	↓-4.0
2/20 08:10	85.6	↓-4.0
2/20 08:20	81.6	↓-4.0
2/20 08:30	77.6	↓-4.0
2/20 08:40	73.6	↓-4.0
2/20 08:50	69.6	↓-4.0
2/20 09:00	65.8	↓-3.8
2/20 09:10	62.1	↓-3.7
2/20 09:20	58.6	↓-3.5
2/20 09:30	55.2	↓-3.4
2/20 09:40	52.0	↓-3.2
2/20 09:50	49.1	↓-2.9
2/20 10:00	46.5	↓-2.6
2/20 10:10	44.1	↓-2.4
2/20 10:20	41.9	↓-2.2
2/20 10:30	40.1	↓-1.8
2/20 10:40	38.7	↓-1.4
2/20 10:50	37.5	↓-1.2
2/20 11:00	36.7	↓-0.8
2/20 11:10	36.2	↓-0.5	干潮
2/20 11:20	36.1	↓-0.1	干潮
2/20 11:30	36.3	↑0.2
2/20 11:40	36.9	↑0.6
2/20 11:50	37.8	↑0.9
2/20 12:00	39.0	↑1.2
2/20 12:10	40.6	↑1.6
2/20 12:20	42.6	↑2.0
2/20 12:30	44.8	↑2.2
2/20 12:40	47.3	↑2.5
2/20 12:50	50.1	↑2.8
2/20 13:00	53.2	↑3.1
2/20 13:10	56.5	↑3.3
2/20 13:20	60.0	↑3.5
2/20 13:30	63.7	↑3.7
2/20 13:40	67.6	↑3.9
2/20 13:50	71.6	↑4.0
2/20 14:00	75.6	↑4.0
2/20 14:10	79.7	↑4.1
2/20 14:20	83.9	↑4.2
2/20 14:30	88.0	↑4.1
2/20 14:40	92.1	↑4.1
2/20 14:50	96.2	↑4.1
2/20 15:00	100.1	↑3.9
2/20 15:10	103.9	↑3.8
2/20 15:20	107.5	↑3.6
2/20 15:30	110.9	↑3.4
2/20 15:40	114.1	↑3.2
2/20 15:50	117.1	↑3.0
2/20 16:00	119.8	↑2.7
2/20 16:10	122.2	↑2.4
2/20 16:20	124.4	↑2.2
2/20 16:30	126.2	↑1.8
2/20 16:40	127.7	↑1.5
2/20 16:50	128.8	↑1.1
2/20 17:00	129.6	↑0.8
2/20 17:10	130.1	↑0.5	満潮
2/20 17:20	130.2	↑0.1
2/20 17:30	129.9	↓-0.3
2/20 17:40	129.3	↓-0.6
2/20 17:50	128.3	↓-1.0
2/20 18:00	127.0	↓-1.3
2/20 18:10	125.3	↓-1.7
2/20 18:20	123.2	↓-2.1
2/20 18:30	120.9	↓-2.3
2/20 18:40	118.2	↓-2.7
2/20 18:50	115.3	↓-2.9
2/20 19:00	112.0	↓-3.3
2/20 19:10	108.5	↓-3.5
2/20 19:20	104.8	↓-3.7
2/20 19:30	100.8	↓-4.0
2/20 19:40	96.7	↓-4.1
2/20 19:50	92.4	↓-4.3
2/20 20:00	88.0	↓-4.4
2/20 20:10	83.5	↓-4.5
2/20 20:20	78.9	↓-4.6
2/20 20:30	74.3	↓-4.6
2/20 20:40	69.7	↓-4.6
2/20 20:50	65.1	↓-4.6
2/20 21:00	60.6	↓-4.5
2/20 21:10	56.2	↓-4.4
2/20 21:20	51.9	↓-4.3
2/20 21:30	47.8	↓-4.1
2/20 21:40	43.8	↓-4.0
2/20 21:50	40.1	↓-3.7
2/20 22:00	36.6	↓-3.5
2/20 22:10	33.4	↓-3.2
2/20 22:20	30.5	↓-2.9
2/20 22:30	27.8	↓-2.7
2/20 22:40	25.5	↓-2.3
2/20 22:50	23.5	↓-2.0
2/20 23:00	21.9	↓-1.6
2/20 23:10	20.7	↓-1.2
2/20 23:20	19.8	↓-0.9
2/20 23:30	19.3	↓-0.5	干潮
2/20 23:40	19.2	↓-0.1
2/20 23:50	19.5	↑0.3