20 (火)	04:08	10:36	17:08	22:52
	131cm	7cm	132cm	47cm
大潮 出 04:59 入 18:17 出 19:16 入 05:38 潮干狩り ◎ 08:36～12:35

大洗（茨城）2038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	54.2	↑3.3
4/20 00:10	57.8	↑3.6
4/20 00:20	61.5	↑3.7
4/20 00:30	65.5	↑4.0
4/20 00:40	69.5	↑4.0
4/20 00:50	73.7	↑4.2
4/20 01:00	77.9	↑4.2
4/20 01:10	82.2	↑4.3
4/20 01:20	86.5	↑4.3
4/20 01:30	90.7	↑4.2
4/20 01:40	94.9	↑4.2
4/20 01:50	99.0	↑4.1
4/20 02:00	102.9	↑3.9
4/20 02:10	106.7	↑3.8
4/20 02:20	110.3	↑3.6
4/20 02:30	113.6	↑3.3
4/20 02:40	116.7	↑3.1
4/20 02:50	119.6	↑2.9
4/20 03:00	122.1	↑2.5
4/20 03:10	124.3	↑2.2
4/20 03:20	126.2	↑1.9
4/20 03:30	127.8	↑1.6
4/20 03:40	129.0	↑1.2
4/20 03:50	129.8	↑0.8
4/20 04:00	130.2	↑0.4	満潮
4/20 04:10	130.3	↑0.1
4/20 04:20	130.0	↓-0.3
4/20 04:30	129.3	↓-0.7
4/20 04:40	128.2	↓-1.1
4/20 04:50	126.8	↓-1.4
4/20 05:00	125.0	↓-1.8
4/20 05:10	122.8	↓-2.2
4/20 05:20	120.2	↓-2.6
4/20 05:30	117.3	↓-2.9
4/20 05:40	114.1	↓-3.2
4/20 05:50	110.6	↓-3.5
4/20 06:00	106.8	↓-3.8
4/20 06:10	102.7	↓-4.1
4/20 06:20	98.4	↓-4.3
4/20 06:30	93.9	↓-4.5
4/20 06:40	89.3	↓-4.6
4/20 06:50	84.4	↓-4.9
4/20 07:00	79.5	↓-4.9
4/20 07:10	74.5	↓-5.0
4/20 07:20	69.4	↓-5.1	最大潮位差
4/20 07:30	64.3	↓-5.1	最大潮位差
4/20 07:40	59.3	↓-5.0
4/20 07:50	54.3	↓-5.0
4/20 08:00	49.4	↓-4.9
4/20 08:10	44.6	↓-4.8
4/20 08:20	40.0	↓-4.6
4/20 08:30	35.6	↓-4.4
4/20 08:40	31.4	↓-4.2
4/20 08:50	27.4	↓-4.0
4/20 09:00	23.8	↓-3.6
4/20 09:10	20.4	↓-3.4
4/20 09:20	17.3	↓-3.1
4/20 09:30	14.6	↓-2.7
4/20 09:40	12.2	↓-2.4
4/20 09:50	10.2	↓-2.0
4/20 10:00	8.6	↓-1.6
4/20 10:10	7.4	↓-1.2
4/20 10:20	6.5	↓-0.9
4/20 10:30	6.1	↓-0.4	干潮
4/20 10:40	6.1	0
4/20 10:50	6.5	↑0.4
4/20 11:00	7.4	↑0.9
4/20 11:10	8.6	↑1.2
4/20 11:20	10.2	↑1.6
4/20 11:30	12.3	↑2.1
4/20 11:40	14.7	↑2.4
4/20 11:50	17.4	↑2.7
4/20 12:00	20.5	↑3.1
4/20 12:10	24.0	↑3.5
4/20 12:20	27.7	↑3.7
4/20 12:30	31.7	↑4.0
4/20 12:40	35.9	↑4.2
4/20 12:50	40.4	↑4.5
4/20 13:00	45.0	↑4.6
4/20 13:10	49.8	↑4.8
4/20 13:20	54.8	↑5.0
4/20 13:30	59.8	↑5.0
4/20 13:40	64.8	↑5.0
4/20 13:50	69.9	↑5.1	最大潮位差
4/20 14:00	74.9	↑5.0
4/20 14:10	79.9	↑5.0
4/20 14:20	84.8	↑4.9
4/20 14:30	89.6	↑4.8
4/20 14:40	94.3	↑4.7
4/20 14:50	98.7	↑4.4
4/20 15:00	103.0	↑4.3
4/20 15:10	107.0	↑4.0
4/20 15:20	110.8	↑3.8
4/20 15:30	114.3	↑3.5
4/20 15:40	117.5	↑3.2
4/20 15:50	120.4	↑2.9
4/20 16:00	123.0	↑2.6
4/20 16:10	125.3	↑2.3
4/20 16:20	127.2	↑1.9
4/20 16:30	128.7	↑1.5
4/20 16:40	129.9	↑1.2
4/20 16:50	130.7	↑0.8
4/20 17:00	131.2	↑0.5	満潮
4/20 17:10	131.2	0
4/20 17:20	131.0	↓-0.2
4/20 17:30	130.3	↓-0.7
4/20 17:40	129.3	↓-1.0
4/20 17:50	128.0	↓-1.3
4/20 18:00	126.3	↓-1.7
4/20 18:10	124.3	↓-2.0
4/20 18:20	122.0	↓-2.3
4/20 18:30	119.5	↓-2.5
4/20 18:40	116.6	↓-2.9
4/20 18:50	113.6	↓-3.0
4/20 19:00	110.3	↓-3.3
4/20 19:10	106.8	↓-3.5
4/20 19:20	103.2	↓-3.6
4/20 19:30	99.5	↓-3.7
4/20 19:40	95.7	↓-3.8
4/20 19:50	91.9	↓-3.8
4/20 20:00	88.0	↓-3.9
4/20 20:10	84.1	↓-3.9
4/20 20:20	80.3	↓-3.8
4/20 20:30	76.5	↓-3.8
4/20 20:40	72.9	↓-3.6
4/20 20:50	69.4	↓-3.5
4/20 21:00	66.0	↓-3.4
4/20 21:10	62.8	↓-3.2
4/20 21:20	59.9	↓-2.9
4/20 21:30	57.2	↓-2.7
4/20 21:40	54.7	↓-2.5
4/20 21:50	52.5	↓-2.2
4/20 22:00	50.6	↓-1.9
4/20 22:10	49.1	↓-1.5
4/20 22:20	47.8	↓-1.3
4/20 22:30	46.9	↓-0.9
4/20 22:40	46.3	↓-0.6
4/20 22:50	46.1	↓-0.2	干潮
4/20 23:00	46.2	↑0.1
4/20 23:10	46.7	↑0.5
4/20 23:20	47.6	↑0.9
4/20 23:30	48.7	↑1.1
4/20 23:40	50.3	↑1.6
4/20 23:50	52.1	↑1.8