20 (土)	06:15	00:45	21:02	13:31
	102cm	72cm	94cm	16cm
中潮 出 04:58 入 18:17 出 23:28 入 09:08 潮干狩り ◎ 11:34～15:36

那珂湊（茨城）2052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	72.4	↓-0.7
4/20 00:10	71.9	↓-0.5
4/20 00:20	71.4	↓-0.5
4/20 00:30	71.2	↓-0.2
4/20 00:40	71.0	↓-0.2	干潮
4/20 00:50	71.0	0
4/20 01:00	71.2	↑0.2
4/20 01:10	71.5	↑0.3
4/20 01:20	71.9	↑0.4
4/20 01:30	72.5	↑0.6
4/20 01:40	73.2	↑0.7
4/20 01:50	74.0	↑0.8
4/20 02:00	74.9	↑0.9
4/20 02:10	75.9	↑1.0
4/20 02:20	77.0	↑1.1
4/20 02:30	78.1	↑1.1
4/20 02:40	79.4	↑1.3
4/20 02:50	80.7	↑1.3
4/20 03:00	82.0	↑1.3
4/20 03:10	83.4	↑1.4
4/20 03:20	84.8	↑1.4
4/20 03:30	86.2	↑1.4
4/20 03:40	87.6	↑1.4
4/20 03:50	89.0	↑1.4
4/20 04:00	90.4	↑1.4
4/20 04:10	91.7	↑1.3
4/20 04:20	93.0	↑1.3
4/20 04:30	94.2	↑1.2
4/20 04:40	95.4	↑1.2
4/20 04:50	96.5	↑1.1
4/20 05:00	97.5	↑1.0
4/20 05:10	98.4	↑0.9
4/20 05:20	99.2	↑0.8
4/20 05:30	99.8	↑0.6
4/20 05:40	100.4	↑0.6
4/20 05:50	100.8	↑0.4
4/20 06:00	101.1	↑0.3
4/20 06:10	101.2	↑0.1	満潮
4/20 06:20	101.2	0
4/20 06:30	101.0	↓-0.2
4/20 06:40	100.7	↓-0.3
4/20 06:50	100.1	↓-0.6
4/20 07:00	99.4	↓-0.7
4/20 07:10	98.5	↓-0.9
4/20 07:20	97.5	↓-1.0
4/20 07:30	96.2	↓-1.3
4/20 07:40	94.8	↓-1.4
4/20 07:50	93.1	↓-1.7
4/20 08:00	91.3	↓-1.8
4/20 08:10	89.3	↓-2.0
4/20 08:20	87.2	↓-2.1
4/20 08:30	84.9	↓-2.3
4/20 08:40	82.4	↓-2.5
4/20 08:50	79.8	↓-2.6
4/20 09:00	77.0	↓-2.8
4/20 09:10	74.1	↓-2.9
4/20 09:20	71.2	↓-2.9
4/20 09:30	68.1	↓-3.1
4/20 09:40	65.0	↓-3.1
4/20 09:50	61.8	↓-3.2
4/20 10:00	58.6	↓-3.2
4/20 10:10	55.3	↓-3.3	最大潮位差
4/20 10:20	52.1	↓-3.2
4/20 10:30	48.9	↓-3.2
4/20 10:40	45.8	↓-3.1
4/20 10:50	42.7	↓-3.1
4/20 11:00	39.7	↓-3.0
4/20 11:10	36.8	↓-2.9
4/20 11:20	34.1	↓-2.7
4/20 11:30	31.5	↓-2.6
4/20 11:40	29.0	↓-2.5
4/20 11:50	26.7	↓-2.3
4/20 12:00	24.6	↓-2.1
4/20 12:10	22.7	↓-1.9
4/20 12:20	21.0	↓-1.7
4/20 12:30	19.5	↓-1.5
4/20 12:40	18.3	↓-1.2
4/20 12:50	17.3	↓-1.0
4/20 13:00	16.4	↓-0.9
4/20 13:10	15.9	↓-0.5
4/20 13:20	15.5	↓-0.4
4/20 13:30	15.4	↓-0.1	干潮
4/20 13:40	15.5	↑0.1
4/20 13:50	15.9	↑0.4
4/20 14:00	16.4	↑0.5
4/20 14:10	17.2	↑0.8
4/20 14:20	18.1	↑0.9
4/20 14:30	19.3	↑1.2
4/20 14:40	20.6	↑1.3
4/20 14:50	22.1	↑1.5
4/20 15:00	23.7	↑1.6
4/20 15:10	25.6	↑1.9
4/20 15:20	27.5	↑1.9
4/20 15:30	29.6	↑2.1
4/20 15:40	31.8	↑2.2
4/20 15:50	34.1	↑2.3
4/20 16:00	36.5	↑2.4
4/20 16:10	39.0	↑2.5
4/20 16:20	41.5	↑2.5
4/20 16:30	44.1	↑2.6
4/20 16:40	46.7	↑2.6
4/20 16:50	49.4	↑2.7
4/20 17:00	52.1	↑2.7
4/20 17:10	54.8	↑2.7
4/20 17:20	57.5	↑2.7
4/20 17:30	60.2	↑2.7
4/20 17:40	62.8	↑2.6
4/20 17:50	65.4	↑2.6
4/20 18:00	68.0	↑2.6
4/20 18:10	70.5	↑2.5
4/20 18:20	72.9	↑2.4
4/20 18:30	75.2	↑2.3
4/20 18:40	77.4	↑2.2
4/20 18:50	79.5	↑2.1
4/20 19:00	81.5	↑2.0
4/20 19:10	83.4	↑1.9
4/20 19:20	85.1	↑1.7
4/20 19:30	86.7	↑1.6
4/20 19:40	88.1	↑1.4
4/20 19:50	89.4	↑1.3
4/20 20:00	90.5	↑1.1
4/20 20:10	91.4	↑0.9
4/20 20:20	92.2	↑0.8
4/20 20:30	92.8	↑0.6
4/20 20:40	93.2	↑0.4
4/20 20:50	93.5	↑0.3
4/20 21:00	93.6	↑0.1	満潮
4/20 21:10	93.6	0
4/20 21:20	93.3	↓-0.3
4/20 21:30	93.0	↓-0.3
4/20 21:40	92.5	↓-0.5
4/20 21:50	91.9	↓-0.6
4/20 22:00	91.2	↓-0.7
4/20 22:10	90.4	↓-0.8
4/20 22:20	89.5	↓-0.9
4/20 22:30	88.5	↓-1.0
4/20 22:40	87.5	↓-1.0
4/20 22:50	86.4	↓-1.1
4/20 23:00	85.3	↓-1.1
4/20 23:10	84.2	↓-1.1
4/20 23:20	83.1	↓-1.1
4/20 23:30	82.0	↓-1.1
4/20 23:40	81.0	↓-1.0
4/20 23:50	80.0	↓-1.0