20 (金)	03:01	10:18	17:36	22:24
	126cm	4cm	121cm	87cm
大潮 出 04:21 入 18:59 出 04:31 入 19:04 潮干狩り ◎ 08:05～12:34

那珂湊（茨城）2031年06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
6/20 00:00	100.6	↑1.9
6/20 00:10	102.5	↑1.9
6/20 00:20	104.4	↑1.9
6/20 00:30	106.4	↑2.0
6/20 00:40	108.4	↑2.0
6/20 00:50	110.4	↑2.0
6/20 01:00	112.3	↑1.9
6/20 01:10	114.1	↑1.8
6/20 01:20	115.9	↑1.8
6/20 01:30	117.6	↑1.7
6/20 01:40	119.2	↑1.6
6/20 01:50	120.7	↑1.5
6/20 02:00	122.0	↑1.3
6/20 02:10	123.1	↑1.1
6/20 02:20	124.1	↑1.0
6/20 02:30	124.9	↑0.8
6/20 02:40	125.5	↑0.6
6/20 02:50	125.8	↑0.3
6/20 03:00	125.9	↑0.1	満潮
6/20 03:10	125.8	↓-0.1
6/20 03:20	125.5	↓-0.3
6/20 03:30	124.8	↓-0.7
6/20 03:40	123.9	↓-0.9
6/20 03:50	122.8	↓-1.1
6/20 04:00	121.4	↓-1.4
6/20 04:10	119.7	↓-1.7
6/20 04:20	117.7	↓-2.0
6/20 04:30	115.5	↓-2.2
6/20 04:40	113.0	↓-2.5
6/20 04:50	110.2	↓-2.8
6/20 05:00	107.3	↓-2.9
6/20 05:10	104.0	↓-3.3
6/20 05:20	100.6	↓-3.4
6/20 05:30	97.0	↓-3.6
6/20 05:40	93.1	↓-3.9
6/20 05:50	89.1	↓-4.0
6/20 06:00	85.0	↓-4.1
6/20 06:10	80.7	↓-4.3
6/20 06:20	76.4	↓-4.3
6/20 06:30	71.9	↓-4.5
6/20 06:40	67.4	↓-4.5
6/20 06:50	62.9	↓-4.5
6/20 07:00	58.3	↓-4.6	最大潮位差
6/20 07:10	53.8	↓-4.5
6/20 07:20	49.3	↓-4.5
6/20 07:30	44.9	↓-4.4
6/20 07:40	40.7	↓-4.2
6/20 07:50	36.5	↓-4.2
6/20 08:00	32.5	↓-4.0
6/20 08:10	28.7	↓-3.8
6/20 08:20	25.0	↓-3.7
6/20 08:30	21.6	↓-3.4
6/20 08:40	18.4	↓-3.2
6/20 08:50	15.5	↓-2.9
6/20 09:00	12.9	↓-2.6
6/20 09:10	10.5	↓-2.4
6/20 09:20	8.5	↓-2.0
6/20 09:30	6.8	↓-1.7
6/20 09:40	5.3	↓-1.5
6/20 09:50	4.3	↓-1.0
6/20 10:00	3.5	↓-0.8
6/20 10:10	3.1	↓-0.4	干潮
6/20 10:20	3.0	↓-0.1
6/20 10:30	3.3	↑0.3
6/20 10:40	3.9	↑0.6
6/20 10:50	4.8	↑0.9
6/20 11:00	6.1	↑1.3
6/20 11:10	7.6	↑1.5
6/20 11:20	9.5	↑1.9
6/20 11:30	11.6	↑2.1
6/20 11:40	14.0	↑2.4
6/20 11:50	16.7	↑2.7
6/20 12:00	19.6	↑2.9
6/20 12:10	22.7	↑3.1
6/20 12:20	26.1	↑3.4
6/20 12:30	29.6	↑3.5
6/20 12:40	33.3	↑3.7
6/20 12:50	37.1	↑3.8
6/20 13:00	41.1	↑4.0
6/20 13:10	45.2	↑4.1
6/20 13:20	49.3	↑4.1
6/20 13:30	53.5	↑4.2
6/20 13:40	57.8	↑4.3
6/20 13:50	62.0	↑4.2
6/20 14:00	66.3	↑4.3
6/20 14:10	70.5	↑4.2
6/20 14:20	74.7	↑4.2
6/20 14:30	78.7	↑4.0
6/20 14:40	82.7	↑4.0
6/20 14:50	86.6	↑3.9
6/20 15:00	90.3	↑3.7
6/20 15:10	93.9	↑3.6
6/20 15:20	97.3	↑3.4
6/20 15:30	100.5	↑3.2
6/20 15:40	103.6	↑3.1
6/20 15:50	106.4	↑2.8
6/20 16:00	108.9	↑2.5
6/20 16:10	111.2	↑2.3
6/20 16:20	113.3	↑2.1
6/20 16:30	115.1	↑1.8
6/20 16:40	116.7	↑1.6
6/20 16:50	118.0	↑1.3
6/20 17:00	119.0	↑1.0
6/20 17:10	119.8	↑0.8
6/20 17:20	120.3	↑0.5
6/20 17:30	120.5	↑0.2	満潮
6/20 17:40	120.5	0
6/20 17:50	120.2	↓-0.3
6/20 18:00	119.8	↓-0.4
6/20 18:10	119.1	↓-0.7
6/20 18:20	118.2	↓-0.9
6/20 18:30	117.1	↓-1.1
6/20 18:40	115.8	↓-1.3
6/20 18:50	114.4	↓-1.4
6/20 19:00	112.9	↓-1.5
6/20 19:10	111.3	↓-1.6
6/20 19:20	109.5	↓-1.8
6/20 19:30	107.8	↓-1.7
6/20 19:40	105.9	↓-1.9
6/20 19:50	104.1	↓-1.8
6/20 20:00	102.2	↓-1.9
6/20 20:10	100.4	↓-1.8
6/20 20:20	98.5	↓-1.9
6/20 20:30	96.8	↓-1.7
6/20 20:40	95.1	↓-1.7
6/20 20:50	93.6	↓-1.5
6/20 21:00	92.1	↓-1.5
6/20 21:10	90.8	↓-1.3
6/20 21:20	89.6	↓-1.2
6/20 21:30	88.6	↓-1.0
6/20 21:40	87.7	↓-0.9
6/20 21:50	87.0	↓-0.7
6/20 22:00	86.5	↓-0.5
6/20 22:10	86.2	↓-0.3
6/20 22:20	86.0	↓-0.2	干潮
6/20 22:30	86.0	0
6/20 22:40	86.3	↑0.3
6/20 22:50	86.7	↑0.4
6/20 23:00	87.2	↑0.5
6/20 23:10	88.0	↑0.8
6/20 23:20	88.9	↑0.9
6/20 23:30	90.0	↑1.1
6/20 23:40	91.2	↑1.2
6/20 23:50	92.5	↑1.3