20 (木)	03:44	10:06	16:34	22:17
	127cm	12cm	127cm	52cm
大潮 出 04:59 入 18:16 出 04:57 入 18:23 潮干狩り ◎ 08:18～11:53

大洗（茨城）2023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	66.9	↑3.5
4/20 00:10	70.4	↑3.5
4/20 00:20	74.1	↑3.7
4/20 00:30	77.8	↑3.7
4/20 00:40	81.5	↑3.7
4/20 00:50	85.3	↑3.8
4/20 01:00	89.1	↑3.8
4/20 01:10	92.8	↑3.7
4/20 01:20	96.4	↑3.6
4/20 01:30	99.9	↑3.5
4/20 01:40	103.3	↑3.4
4/20 01:50	106.6	↑3.3
4/20 02:00	109.6	↑3.0
4/20 02:10	112.5	↑2.9
4/20 02:20	115.1	↑2.6
4/20 02:30	117.5	↑2.4
4/20 02:40	119.7	↑2.2
4/20 02:50	121.5	↑1.8
4/20 03:00	123.1	↑1.6
4/20 03:10	124.3	↑1.2
4/20 03:20	125.2	↑0.9
4/20 03:30	125.8	↑0.6
4/20 03:40	126.1	↑0.3	満潮
4/20 03:50	126.0	↓-0.1
4/20 04:00	125.6	↓-0.4
4/20 04:10	124.8	↓-0.8
4/20 04:20	123.7	↓-1.1
4/20 04:30	122.2	↓-1.5
4/20 04:40	120.4	↓-1.8
4/20 04:50	118.2	↓-2.2
4/20 05:00	115.7	↓-2.5
4/20 05:10	112.9	↓-2.8
4/20 05:20	109.8	↓-3.1
4/20 05:30	106.4	↓-3.4
4/20 05:40	102.8	↓-3.6
4/20 05:50	98.9	↓-3.9
4/20 06:00	94.8	↓-4.1
4/20 06:10	90.5	↓-4.3
4/20 06:20	86.1	↓-4.4
4/20 06:30	81.5	↓-4.6
4/20 06:40	76.9	↓-4.6
4/20 06:50	72.2	↓-4.7
4/20 07:00	67.4	↓-4.8	最大潮位差
4/20 07:10	62.7	↓-4.7
4/20 07:20	58.0	↓-4.7
4/20 07:30	53.4	↓-4.6
4/20 07:40	48.8	↓-4.6
4/20 07:50	44.5	↓-4.3
4/20 08:00	40.3	↓-4.2
4/20 08:10	36.3	↓-4.0
4/20 08:20	32.5	↓-3.8
4/20 08:30	29.0	↓-3.5
4/20 08:40	25.7	↓-3.3
4/20 08:50	22.8	↓-2.9
4/20 09:00	20.1	↓-2.7
4/20 09:10	17.9	↓-2.2
4/20 09:20	15.9	↓-2.0
4/20 09:30	14.4	↓-1.5
4/20 09:40	13.2	↓-1.2
4/20 09:50	12.4	↓-0.8
4/20 10:00	12.0	↓-0.4	干潮
4/20 10:10	12.0	0
4/20 10:20	12.4	↑0.4
4/20 10:30	13.2	↑0.8
4/20 10:40	14.3	↑1.1
4/20 10:50	15.9	↑1.6
4/20 11:00	17.8	↑1.9
4/20 11:10	20.1	↑2.3
4/20 11:20	22.7	↑2.6
4/20 11:30	25.7	↑3.0
4/20 11:40	29.0	↑3.3
4/20 11:50	32.5	↑3.5
4/20 12:00	36.3	↑3.8
4/20 12:10	40.3	↑4.0
4/20 12:20	44.5	↑4.2
4/20 12:30	48.9	↑4.4
4/20 12:40	53.4	↑4.5
4/20 12:50	58.0	↑4.6
4/20 13:00	62.7	↑4.7
4/20 13:10	67.4	↑4.7
4/20 13:20	72.0	↑4.6
4/20 13:30	76.7	↑4.7
4/20 13:40	81.3	↑4.6
4/20 13:50	85.8	↑4.5
4/20 14:00	90.2	↑4.4
4/20 14:10	94.4	↑4.2
4/20 14:20	98.5	↑4.1
4/20 14:30	102.3	↑3.8
4/20 14:40	105.9	↑3.6
4/20 14:50	109.3	↑3.4
4/20 15:00	112.4	↑3.1
4/20 15:10	115.3	↑2.9
4/20 15:20	117.8	↑2.5
4/20 15:30	120.0	↑2.2
4/20 15:40	122.0	↑2.0
4/20 15:50	123.6	↑1.6
4/20 16:00	124.8	↑1.2
4/20 16:10	125.8	↑1.0
4/20 16:20	126.4	↑0.6
4/20 16:30	126.6	↑0.2	満潮
4/20 16:40	126.6	0
4/20 16:50	126.2	↓-0.4
4/20 17:00	125.4	↓-0.8
4/20 17:10	124.4	↓-1.0
4/20 17:20	123.1	↓-1.3
4/20 17:30	121.4	↓-1.7
4/20 17:40	119.5	↓-1.9
4/20 17:50	117.3	↓-2.2
4/20 18:00	114.9	↓-2.4
4/20 18:10	112.3	↓-2.6
4/20 18:20	109.5	↓-2.8
4/20 18:30	106.5	↓-3.0
4/20 18:40	103.3	↓-3.2
4/20 18:50	100.1	↓-3.2
4/20 19:00	96.7	↓-3.4
4/20 19:10	93.3	↓-3.4
4/20 19:20	89.9	↓-3.4
4/20 19:30	86.5	↓-3.4
4/20 19:40	83.1	↓-3.4
4/20 19:50	79.7	↓-3.4
4/20 20:00	76.5	↓-3.2
4/20 20:10	73.3	↓-3.2
4/20 20:20	70.3	↓-3.0
4/20 20:30	67.5	↓-2.8
4/20 20:40	64.8	↓-2.7
4/20 20:50	62.3	↓-2.5
4/20 21:00	60.0	↓-2.3
4/20 21:10	58.0	↓-2.0
4/20 21:20	56.3	↓-1.7
4/20 21:30	54.8	↓-1.5
4/20 21:40	53.5	↓-1.3
4/20 21:50	52.6	↓-0.9
4/20 22:00	51.9	↓-0.7
4/20 22:10	51.6	↓-0.3	干潮
4/20 22:20	51.6	0
4/20 22:30	51.8	↑0.2
4/20 22:40	52.4	↑0.6
4/20 22:50	53.3	↑0.9
4/20 23:00	54.5	↑1.2
4/20 23:10	55.9	↑1.4
4/20 23:20	57.7	↑1.8
4/20 23:30	59.7	↑2.0
4/20 23:40	62.0	↑2.3
4/20 23:50	64.5	↑2.5