20 (日)	07:15	02:46	-	16:09
	94cm	90cm	-	23cm
小潮 出 04:59 入 18:17 出 11:04 入 01:16 潮干狩り ○ 14:13～18:02

那珂湊（茨城）2059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	91.4	↓-0.1
4/20 00:10	91.3	↓-0.1
4/20 00:20	91.1	↓-0.2
4/20 00:30	90.9	↓-0.2
4/20 00:40	90.7	↓-0.2
4/20 00:50	90.5	↓-0.2
4/20 01:00	90.3	↓-0.2
4/20 01:10	90.1	↓-0.2
4/20 01:20	90.0	↓-0.1
4/20 01:30	89.8	↓-0.2
4/20 01:40	89.6	↓-0.2
4/20 01:50	89.5	↓-0.1
4/20 02:00	89.4	↓-0.1
4/20 02:10	89.3	↓-0.1
4/20 02:20	89.2	↓-0.1
4/20 02:30	89.1	↓-0.1
4/20 02:40	89.1	0	干潮
4/20 02:50	89.1	0
4/20 03:00	89.1	0
4/20 03:10	89.2	↑0.1
4/20 03:20	89.3	↑0.1
4/20 03:30	89.3	0
4/20 03:40	89.5	↑0.2
4/20 03:50	89.6	↑0.1
4/20 04:00	89.7	↑0.1
4/20 04:10	89.9	↑0.2
4/20 04:20	90.1	↑0.2
4/20 04:30	90.3	↑0.2
4/20 04:40	90.5	↑0.2
4/20 04:50	90.7	↑0.2
4/20 05:00	90.9	↑0.2
4/20 05:10	91.1	↑0.2
4/20 05:20	91.3	↑0.2
4/20 05:30	91.6	↑0.3
4/20 05:40	91.8	↑0.2
4/20 05:50	92.0	↑0.2
4/20 06:00	92.2	↑0.2
4/20 06:10	92.5	↑0.3
4/20 06:20	92.7	↑0.2
4/20 06:30	92.8	↑0.1
4/20 06:40	93.0	↑0.2
4/20 06:50	93.1	↑0.1
4/20 07:00	93.2	↑0.1
4/20 07:10	93.2	0	満潮
4/20 07:20	93.2	0
4/20 07:30	93.2	0
4/20 07:40	93.1	↓-0.1
4/20 07:50	92.9	↓-0.2
4/20 08:00	92.6	↓-0.3
4/20 08:10	92.3	↓-0.3
4/20 08:20	91.8	↓-0.5
4/20 08:30	91.3	↓-0.5
4/20 08:40	90.7	↓-0.6
4/20 08:50	90.0	↓-0.7
4/20 09:00	89.1	↓-0.9
4/20 09:10	88.2	↓-0.9
4/20 09:20	87.2	↓-1.0
4/20 09:30	86.0	↓-1.2
4/20 09:40	84.7	↓-1.3
4/20 09:50	83.3	↓-1.4
4/20 10:00	81.8	↓-1.5
4/20 10:10	80.2	↓-1.6
4/20 10:20	78.5	↓-1.7
4/20 10:30	76.7	↓-1.8
4/20 10:40	74.8	↓-1.9
4/20 10:50	72.8	↓-2.0
4/20 11:00	70.8	↓-2.0
4/20 11:10	68.7	↓-2.1
4/20 11:20	66.5	↓-2.2
4/20 11:30	64.3	↓-2.2
4/20 11:40	62.0	↓-2.3
4/20 11:50	59.7	↓-2.3
4/20 12:00	57.4	↓-2.3
4/20 12:10	55.1	↓-2.3
4/20 12:20	52.8	↓-2.3
4/20 12:30	50.6	↓-2.2
4/20 12:40	48.3	↓-2.3
4/20 12:50	46.1	↓-2.2
4/20 13:00	44.0	↓-2.1
4/20 13:10	41.9	↓-2.1
4/20 13:20	39.9	↓-2.0
4/20 13:30	37.9	↓-2.0
4/20 13:40	36.1	↓-1.8
4/20 13:50	34.3	↓-1.8
4/20 14:00	32.7	↓-1.6
4/20 14:10	31.1	↓-1.6
4/20 14:20	29.7	↓-1.4
4/20 14:30	28.3	↓-1.4
4/20 14:40	27.1	↓-1.2
4/20 14:50	26.1	↓-1.0
4/20 15:00	25.1	↓-1.0
4/20 15:10	24.3	↓-0.8
4/20 15:20	23.5	↓-0.8
4/20 15:30	23.0	↓-0.5
4/20 15:40	22.5	↓-0.5
4/20 15:50	22.2	↓-0.3
4/20 16:00	22.1	↓-0.1	干潮
4/20 16:10	22.0	↓-0.1
4/20 16:20	22.1	↑0.1
4/20 16:30	22.4	↑0.3
4/20 16:40	22.7	↑0.3
4/20 16:50	23.3	↑0.6
4/20 17:00	23.9	↑0.6
4/20 17:10	24.7	↑0.8
4/20 17:20	25.6	↑0.9
4/20 17:30	26.6	↑1.0
4/20 17:40	27.8	↑1.2
4/20 17:50	29.1	↑1.3
4/20 18:00	30.5	↑1.4
4/20 18:10	32.1	↑1.6
4/20 18:20	33.7	↑1.6
4/20 18:30	35.5	↑1.8
4/20 18:40	37.4	↑1.9
4/20 18:50	39.3	↑1.9
4/20 19:00	41.3	↑2.0
4/20 19:10	43.5	↑2.2
4/20 19:20	45.6	↑2.1
4/20 19:30	47.9	↑2.3
4/20 19:40	50.2	↑2.3
4/20 19:50	52.5	↑2.3
4/20 20:00	54.8	↑2.3
4/20 20:10	57.2	↑2.4	最大潮位差
4/20 20:20	59.6	↑2.4	最大潮位差
4/20 20:30	61.9	↑2.3
4/20 20:40	64.3	↑2.4	最大潮位差
4/20 20:50	66.6	↑2.3
4/20 21:00	68.8	↑2.2
4/20 21:10	71.0	↑2.2
4/20 21:20	73.2	↑2.2
4/20 21:30	75.2	↑2.0
4/20 21:40	77.2	↑2.0
4/20 21:50	79.1	↑1.9
4/20 22:00	80.9	↑1.8
4/20 22:10	82.6	↑1.7
4/20 22:20	84.2	↑1.6
4/20 22:30	85.7	↑1.5
4/20 22:40	87.0	↑1.3
4/20 22:50	88.3	↑1.3
4/20 23:00	89.4	↑1.1
4/20 23:10	90.4	↑1.0
4/20 23:20	91.3	↑0.9
4/20 23:30	92.1	↑0.8
4/20 23:40	92.8	↑0.7
4/20 23:50	93.3	↑0.5