20 (火)	05:07	12:25	19:54	-
	109cm	4cm	97cm	-
中潮 出 04:58 入 18:17 出 22:39 入 07:13 潮干狩り ◎ 10:01～14:58

那珂湊（茨城）2060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	70.8	↑0.3
4/20 00:10	71.2	↑0.4
4/20 00:20	71.8	↑0.6
4/20 00:30	72.6	↑0.8
4/20 00:40	73.5	↑0.9
4/20 00:50	74.6	↑1.1
4/20 01:00	75.8	↑1.2
4/20 01:10	77.1	↑1.3
4/20 01:20	78.6	↑1.5
4/20 01:30	80.1	↑1.5
4/20 01:40	81.7	↑1.6
4/20 01:50	83.4	↑1.7
4/20 02:00	85.1	↑1.7
4/20 02:10	86.9	↑1.8
4/20 02:20	88.7	↑1.8
4/20 02:30	90.5	↑1.8
4/20 02:40	92.3	↑1.8
4/20 02:50	94.1	↑1.8
4/20 03:00	95.9	↑1.8
4/20 03:10	97.5	↑1.6
4/20 03:20	99.2	↑1.7
4/20 03:30	100.7	↑1.5
4/20 03:40	102.1	↑1.4
4/20 03:50	103.5	↑1.4
4/20 04:00	104.7	↑1.2
4/20 04:10	105.7	↑1.0
4/20 04:20	106.7	↑1.0
4/20 04:30	107.4	↑0.7
4/20 04:40	108.0	↑0.6
4/20 04:50	108.4	↑0.4
4/20 05:00	108.7	↑0.3	満潮
4/20 05:10	108.7	0
4/20 05:20	108.5	↓-0.2
4/20 05:30	108.1	↓-0.4
4/20 05:40	107.5	↓-0.6
4/20 05:50	106.7	↓-0.8
4/20 06:00	105.6	↓-1.1
4/20 06:10	104.4	↓-1.2
4/20 06:20	102.9	↓-1.5
4/20 06:30	101.1	↓-1.8
4/20 06:40	99.2	↓-1.9
4/20 06:50	97.0	↓-2.2
4/20 07:00	94.6	↓-2.4
4/20 07:10	92.1	↓-2.5
4/20 07:20	89.3	↓-2.8
4/20 07:30	86.3	↓-3.0
4/20 07:40	83.1	↓-3.2
4/20 07:50	79.8	↓-3.3
4/20 08:00	76.4	↓-3.4
4/20 08:10	72.8	↓-3.6
4/20 08:20	69.1	↓-3.7
4/20 08:30	65.3	↓-3.8
4/20 08:40	61.5	↓-3.8
4/20 08:50	57.6	↓-3.9
4/20 09:00	53.6	↓-4.0	最大潮位差
4/20 09:10	49.7	↓-3.9
4/20 09:20	45.8	↓-3.9
4/20 09:30	42.0	↓-3.8
4/20 09:40	38.2	↓-3.8
4/20 09:50	34.5	↓-3.7
4/20 10:00	30.9	↓-3.6
4/20 10:10	27.5	↓-3.4
4/20 10:20	24.2	↓-3.3
4/20 10:30	21.1	↓-3.1
4/20 10:40	18.2	↓-2.9
4/20 10:50	15.6	↓-2.6
4/20 11:00	13.1	↓-2.5
4/20 11:10	10.9	↓-2.2
4/20 11:20	9.0	↓-1.9
4/20 11:30	7.3	↓-1.7
4/20 11:40	5.9	↓-1.4
4/20 11:50	4.8	↓-1.1
4/20 12:00	4.0	↓-0.8
4/20 12:10	3.4	↓-0.6
4/20 12:20	3.2	↓-0.2	干潮
4/20 12:30	3.2	0
4/20 12:40	3.5	↑0.3
4/20 12:50	4.1	↑0.6
4/20 13:00	4.9	↑0.8
4/20 13:10	6.0	↑1.1
4/20 13:20	7.4	↑1.4
4/20 13:30	8.9	↑1.5
4/20 13:40	10.7	↑1.8
4/20 13:50	12.8	↑2.1
4/20 14:00	15.0	↑2.2
4/20 14:10	17.3	↑2.3
4/20 14:20	19.9	↑2.6
4/20 14:30	22.6	↑2.7
4/20 14:40	25.4	↑2.8
4/20 14:50	28.3	↑2.9
4/20 15:00	31.4	↑3.1
4/20 15:10	34.5	↑3.1
4/20 15:20	37.7	↑3.2
4/20 15:30	40.9	↑3.2
4/20 15:40	44.1	↑3.2
4/20 15:50	47.4	↑3.3
4/20 16:00	50.7	↑3.3
4/20 16:10	54.0	↑3.3
4/20 16:20	57.2	↑3.2
4/20 16:30	60.4	↑3.2
4/20 16:40	63.5	↑3.1
4/20 16:50	66.6	↑3.1
4/20 17:00	69.5	↑2.9
4/20 17:10	72.4	↑2.9
4/20 17:20	75.2	↑2.8
4/20 17:30	77.8	↑2.6
4/20 17:40	80.3	↑2.5
4/20 17:50	82.6	↑2.3
4/20 18:00	84.8	↑2.2
4/20 18:10	86.8	↑2.0
4/20 18:20	88.7	↑1.9
4/20 18:30	90.4	↑1.7
4/20 18:40	91.8	↑1.4
4/20 18:50	93.1	↑1.3
4/20 19:00	94.2	↑1.1
4/20 19:10	95.2	↑1.0
4/20 19:20	95.9	↑0.7
4/20 19:30	96.4	↑0.5
4/20 19:40	96.7	↑0.3
4/20 19:50	96.9	↑0.2	満潮
4/20 20:00	96.8	↓-0.1
4/20 20:10	96.7	↓-0.1
4/20 20:20	96.3	↓-0.4
4/20 20:30	95.8	↓-0.5
4/20 20:40	95.1	↓-0.7
4/20 20:50	94.4	↓-0.7
4/20 21:00	93.5	↓-0.9
4/20 21:10	92.5	↓-1.0
4/20 21:20	91.5	↓-1.0
4/20 21:30	90.4	↓-1.1
4/20 21:40	89.2	↓-1.2
4/20 21:50	88.1	↓-1.1
4/20 22:00	86.9	↓-1.2
4/20 22:10	85.7	↓-1.2
4/20 22:20	84.6	↓-1.1
4/20 22:30	83.5	↓-1.1
4/20 22:40	82.5	↓-1.0
4/20 22:50	81.5	↓-1.0
4/20 23:00	80.7	↓-0.8
4/20 23:10	79.9	↓-0.8
4/20 23:20	79.3	↓-0.6
4/20 23:30	78.7	↓-0.6
4/20 23:40	78.4	↓-0.3
4/20 23:50	78.1	↓-0.3