20 (土)	05:04	12:14	19:39	-
	110cm	-1cm	102cm	-
中潮 出 04:59 入 18:17 出 22:24 入 07:04 潮干狩り ◎ 09:44～14:53

那珂湊（茨城）2041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	67.9	↑0.3
4/20 00:10	68.4	↑0.5
4/20 00:20	69.1	↑0.7
4/20 00:30	70.0	↑0.9
4/20 00:40	71.0	↑1.0
4/20 00:50	72.2	↑1.2
4/20 01:00	73.6	↑1.4
4/20 01:10	75.0	↑1.4
4/20 01:20	76.7	↑1.7
4/20 01:30	78.4	↑1.7
4/20 01:40	80.2	↑1.8
4/20 01:50	82.1	↑1.9
4/20 02:00	84.0	↑1.9
4/20 02:10	86.0	↑2.0
4/20 02:20	88.0	↑2.0
4/20 02:30	90.0	↑2.0
4/20 02:40	92.0	↑2.0
4/20 02:50	93.9	↑1.9
4/20 03:00	95.8	↑1.9
4/20 03:10	97.7	↑1.9
4/20 03:20	99.4	↑1.7
4/20 03:30	101.1	↑1.7
4/20 03:40	102.7	↑1.6
4/20 03:50	104.1	↑1.4
4/20 04:00	105.4	↑1.3
4/20 04:10	106.5	↑1.1
4/20 04:20	107.5	↑1.0
4/20 04:30	108.3	↑0.8
4/20 04:40	108.9	↑0.6
4/20 04:50	109.3	↑0.4
4/20 05:00	109.5	↑0.2	満潮
4/20 05:10	109.4	↓-0.1
4/20 05:20	109.2	↓-0.2
4/20 05:30	108.7	↓-0.5
4/20 05:40	107.9	↓-0.8
4/20 05:50	106.9	↓-1.0
4/20 06:00	105.7	↓-1.2
4/20 06:10	104.2	↓-1.5
4/20 06:20	102.5	↓-1.7
4/20 06:30	100.5	↓-2.0
4/20 06:40	98.3	↓-2.2
4/20 06:50	95.8	↓-2.5
4/20 07:00	93.1	↓-2.7
4/20 07:10	90.2	↓-2.9
4/20 07:20	87.1	↓-3.1
4/20 07:30	83.8	↓-3.3
4/20 07:40	80.3	↓-3.5
4/20 07:50	76.7	↓-3.6
4/20 08:00	72.9	↓-3.8
4/20 08:10	69.0	↓-3.9
4/20 08:20	65.0	↓-4.0
4/20 08:30	60.9	↓-4.1
4/20 08:40	56.7	↓-4.2	最大潮位差
4/20 08:50	52.6	↓-4.1
4/20 09:00	48.4	↓-4.2	最大潮位差
4/20 09:10	44.2	↓-4.2	最大潮位差
4/20 09:20	40.1	↓-4.1
4/20 09:30	36.1	↓-4.0
4/20 09:40	32.1	↓-4.0
4/20 09:50	28.3	↓-3.8
4/20 10:00	24.6	↓-3.7
4/20 10:10	21.1	↓-3.5
4/20 10:20	17.8	↓-3.3
4/20 10:30	14.7	↓-3.1
4/20 10:40	11.8	↓-2.9
4/20 10:50	9.2	↓-2.6
4/20 11:00	6.9	↓-2.3
4/20 11:10	4.8	↓-2.1
4/20 11:20	3.0	↓-1.8
4/20 11:30	1.5	↓-1.5
4/20 11:40	0.3	↓-1.2
4/20 11:50	-0.6	↓-0.9
4/20 12:00	-1.1	↓-0.5
4/20 12:10	-1.4	↓-0.3	干潮
4/20 12:20	-1.3	↑0.1
4/20 12:30	-1.0	↑0.3
4/20 12:40	-0.3	↑0.7
4/20 12:50	0.6	↑0.9
4/20 13:00	1.8	↑1.2
4/20 13:10	3.3	↑1.5
4/20 13:20	5.1	↑1.8
4/20 13:30	7.1	↑2.0
4/20 13:40	9.3	↑2.2
4/20 13:50	11.8	↑2.5
4/20 14:00	14.4	↑2.6
4/20 14:10	17.2	↑2.8
4/20 14:20	20.2	↑3.0
4/20 14:30	23.4	↑3.2
4/20 14:40	26.6	↑3.2
4/20 14:50	30.0	↑3.4
4/20 15:00	33.5	↑3.5
4/20 15:10	37.0	↑3.5
4/20 15:20	40.6	↑3.6
4/20 15:30	44.2	↑3.6
4/20 15:40	47.9	↑3.7
4/20 15:50	51.5	↑3.6
4/20 16:00	55.1	↑3.6
4/20 16:10	58.7	↑3.6
4/20 16:20	62.3	↑3.6
4/20 16:30	65.7	↑3.4
4/20 16:40	69.1	↑3.4
4/20 16:50	72.4	↑3.3
4/20 17:00	75.6	↑3.2
4/20 17:10	78.6	↑3.0
4/20 17:20	81.5	↑2.9
4/20 17:30	84.2	↑2.7
4/20 17:40	86.8	↑2.6
4/20 17:50	89.2	↑2.4
4/20 18:00	91.4	↑2.2
4/20 18:10	93.4	↑2.0
4/20 18:20	95.2	↑1.8
4/20 18:30	96.8	↑1.6
4/20 18:40	98.2	↑1.4
4/20 18:50	99.3	↑1.1
4/20 19:00	100.3	↑1.0
4/20 19:10	101.0	↑0.7
4/20 19:20	101.5	↑0.5
4/20 19:30	101.7	↑0.2	満潮
4/20 19:40	101.8	↑0.1
4/20 19:50	101.7	↓-0.1
4/20 20:00	101.3	↓-0.4
4/20 20:10	100.8	↓-0.5
4/20 20:20	100.1	↓-0.7
4/20 20:30	99.3	↓-0.8
4/20 20:40	98.3	↓-1.0
4/20 20:50	97.2	↓-1.1
4/20 21:00	96.0	↓-1.2
4/20 21:10	94.7	↓-1.3
4/20 21:20	93.3	↓-1.4
4/20 21:30	91.9	↓-1.4
4/20 21:40	90.5	↓-1.4
4/20 21:50	89.0	↓-1.5
4/20 22:00	87.5	↓-1.5
4/20 22:10	86.1	↓-1.4
4/20 22:20	84.7	↓-1.4
4/20 22:30	83.4	↓-1.3
4/20 22:40	82.2	↓-1.2
4/20 22:50	81.0	↓-1.2
4/20 23:00	80.0	↓-1.0
4/20 23:10	79.1	↓-0.9
4/20 23:20	78.3	↓-0.8
4/20 23:30	77.7	↓-0.6
4/20 23:40	77.2	↓-0.5
4/20 23:50	76.9	↓-0.3