20 (木)	04:23	11:01	17:36	23:12
	133cm	-2cm	129cm	56cm
大潮 出 04:59 入 18:17 出 06:04 入 19:57 潮干狩り ◎ 08:45～13:15

大洗（茨城）2034年04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
4/20 00:00	58.4	↑2.5
4/20 00:10	61.2	↑2.8
4/20 00:20	64.2	↑3.0
4/20 00:30	67.4	↑3.2
4/20 00:40	70.9	↑3.5
4/20 00:50	74.4	↑3.5
4/20 01:00	78.2	↑3.8
4/20 01:10	82.0	↑3.8
4/20 01:20	85.8	↑3.8
4/20 01:30	89.8	↑4.0
4/20 01:40	93.7	↑3.9
4/20 01:50	97.6	↑3.9
4/20 02:00	101.4	↑3.8
4/20 02:10	105.1	↑3.7
4/20 02:20	108.7	↑3.6
4/20 02:30	112.2	↑3.5
4/20 02:40	115.4	↑3.2
4/20 02:50	118.5	↑3.1
4/20 03:00	121.3	↑2.8
4/20 03:10	123.9	↑2.6
4/20 03:20	126.1	↑2.2
4/20 03:30	128.1	↑2.0
4/20 03:40	129.7	↑1.6
4/20 03:50	131.1	↑1.4
4/20 04:00	132.0	↑0.9
4/20 04:10	132.6	↑0.6
4/20 04:20	132.9	↑0.3	満潮
4/20 04:30	132.8	↓-0.1
4/20 04:40	132.2	↓-0.6
4/20 04:50	131.4	↓-0.8
4/20 05:00	130.1	↓-1.3
4/20 05:10	128.4	↓-1.7
4/20 05:20	126.4	↓-2.0
4/20 05:30	124.0	↓-2.4
4/20 05:40	121.3	↓-2.7
4/20 05:50	118.2	↓-3.1
4/20 06:00	114.8	↓-3.4
4/20 06:10	111.0	↓-3.8
4/20 06:20	107.0	↓-4.0
4/20 06:30	102.7	↓-4.3
4/20 06:40	98.1	↓-4.6
4/20 06:50	93.3	↓-4.8
4/20 07:00	88.4	↓-4.9
4/20 07:10	83.2	↓-5.2
4/20 07:20	78.0	↓-5.2
4/20 07:30	72.7	↓-5.3
4/20 07:40	67.2	↓-5.5	最大潮位差
4/20 07:50	61.8	↓-5.4
4/20 08:00	56.4	↓-5.4
4/20 08:10	51.1	↓-5.3
4/20 08:20	45.8	↓-5.3
4/20 08:30	40.6	↓-5.2
4/20 08:40	35.6	↓-5.0
4/20 08:50	30.8	↓-4.8
4/20 09:00	26.2	↓-4.6
4/20 09:10	21.9	↓-4.3
4/20 09:20	17.9	↓-4.0
4/20 09:30	14.1	↓-3.8
4/20 09:40	10.7	↓-3.4
4/20 09:50	7.6	↓-3.1
4/20 10:00	4.9	↓-2.7
4/20 10:10	2.6	↓-2.3
4/20 10:20	0.7	↓-1.9
4/20 10:30	-0.8	↓-1.5
4/20 10:40	-1.9	↓-1.1
4/20 10:50	-2.6	↓-0.7
4/20 11:00	-2.8	↓-0.2	干潮
4/20 11:10	-2.5	↑0.3
4/20 11:20	-1.9	↑0.6
4/20 11:30	-0.7	↑1.2
4/20 11:40	0.8	↑1.5
4/20 11:50	2.7	↑1.9
4/20 12:00	5.1	↑2.4
4/20 12:10	7.9	↑2.8
4/20 12:20	11.0	↑3.1
4/20 12:30	14.5	↑3.5
4/20 12:40	18.3	↑3.8
4/20 12:50	22.4	↑4.1
4/20 13:00	26.7	↑4.3
4/20 13:10	31.3	↑4.6
4/20 13:20	36.2	↑4.9
4/20 13:30	41.1	↑4.9
4/20 13:40	46.3	↑5.2
4/20 13:50	51.5	↑5.2
4/20 14:00	56.8	↑5.3
4/20 14:10	62.1	↑5.3
4/20 14:20	67.4	↑5.3
4/20 14:30	72.6	↑5.2
4/20 14:40	77.8	↑5.2
4/20 14:50	82.8	↑5.0
4/20 15:00	87.7	↑4.9
4/20 15:10	92.4	↑4.7
4/20 15:20	96.9	↑4.5
4/20 15:30	101.2	↑4.3
4/20 15:40	105.3	↑4.1
4/20 15:50	109.0	↑3.7
4/20 16:00	112.5	↑3.5
4/20 16:10	115.6	↑3.1
4/20 16:20	118.5	↑2.9
4/20 16:30	121.0	↑2.5
4/20 16:40	123.1	↑2.1
4/20 16:50	124.9	↑1.8
4/20 17:00	126.4	↑1.5
4/20 17:10	127.5	↑1.1
4/20 17:20	128.2	↑0.7
4/20 17:30	128.5	↑0.3	満潮
4/20 17:40	128.5	0
4/20 17:50	128.2	↓-0.3
4/20 18:00	127.5	↓-0.7
4/20 18:10	126.5	↓-1.0
4/20 18:20	125.2	↓-1.3
4/20 18:30	123.5	↓-1.7
4/20 18:40	121.6	↓-1.9
4/20 18:50	119.4	↓-2.2
4/20 19:00	117.0	↓-2.4
4/20 19:10	114.4	↓-2.6
4/20 19:20	111.5	↓-2.9
4/20 19:30	108.5	↓-3.0
4/20 19:40	105.3	↓-3.2
4/20 19:50	102.1	↓-3.2
4/20 20:00	98.7	↓-3.4
4/20 20:10	95.3	↓-3.4
4/20 20:20	91.9	↓-3.4
4/20 20:30	88.5	↓-3.4
4/20 20:40	85.1	↓-3.4
4/20 20:50	81.8	↓-3.3
4/20 21:00	78.6	↓-3.2
4/20 21:10	75.5	↓-3.1
4/20 21:20	72.6	↓-2.9
4/20 21:30	69.8	↓-2.8
4/20 21:40	67.2	↓-2.6
4/20 21:50	64.8	↓-2.4
4/20 22:00	62.7	↓-2.1
4/20 22:10	60.8	↓-1.9
4/20 22:20	59.1	↓-1.7
4/20 22:30	57.7	↓-1.4
4/20 22:40	56.7	↓-1.0
4/20 22:50	55.9	↓-0.8
4/20 23:00	55.4	↓-0.5
4/20 23:10	55.2	↓-0.2	干潮
4/20 23:20	55.3	↑0.1
4/20 23:30	55.7	↑0.4
4/20 23:40	56.5	↑0.8
4/20 23:50	57.5	↑1.0