20 (水)	06:00	00:31	20:45	13:16
	105cm	71cm	96cm	10cm
中潮 出 04:59 入 18:17 出 23:10 入 08:44 潮干狩り ◎ 11:05～15:36

那珂湊（茨城）2033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	71.0	↓-0.6
4/20 00:10	70.6	↓-0.4
4/20 00:20	70.4	↓-0.2
4/20 00:30	70.3	↓-0.1	干潮
4/20 00:40	70.4	↑0.1
4/20 00:50	70.6	↑0.2
4/20 01:00	71.0	↑0.4
4/20 01:10	71.6	↑0.6
4/20 01:20	72.3	↑0.7
4/20 01:30	73.1	↑0.8
4/20 01:40	74.1	↑1.0
4/20 01:50	75.1	↑1.0
4/20 02:00	76.3	↑1.2
4/20 02:10	77.6	↑1.3
4/20 02:20	79.0	↑1.4
4/20 02:30	80.4	↑1.4
4/20 02:40	81.9	↑1.5
4/20 02:50	83.5	↑1.6
4/20 03:00	85.1	↑1.6
4/20 03:10	86.7	↑1.6
4/20 03:20	88.3	↑1.6
4/20 03:30	89.9	↑1.6
4/20 03:40	91.5	↑1.6
4/20 03:50	93.0	↑1.5
4/20 04:00	94.5	↑1.5
4/20 04:10	95.9	↑1.4
4/20 04:20	97.3	↑1.4
4/20 04:30	98.6	↑1.3
4/20 04:40	99.8	↑1.2
4/20 04:50	100.9	↑1.1
4/20 05:00	101.9	↑1.0
4/20 05:10	102.7	↑0.8
4/20 05:20	103.4	↑0.7
4/20 05:30	104.0	↑0.6
4/20 05:40	104.4	↑0.4
4/20 05:50	104.7	↑0.3	満潮
4/20 06:00	104.7	0	満潮
4/20 06:10	104.6	↓-0.1
4/20 06:20	104.3	↓-0.3
4/20 06:30	103.9	↓-0.4
4/20 06:40	103.2	↓-0.7
4/20 06:50	102.3	↓-0.9
4/20 07:00	101.2	↓-1.1
4/20 07:10	99.9	↓-1.3
4/20 07:20	98.4	↓-1.5
4/20 07:30	96.7	↓-1.7
4/20 07:40	94.8	↓-1.9
4/20 07:50	92.7	↓-2.1
4/20 08:00	90.4	↓-2.3
4/20 08:10	87.9	↓-2.5
4/20 08:20	85.2	↓-2.7
4/20 08:30	82.4	↓-2.8
4/20 08:40	79.4	↓-3.0
4/20 08:50	76.3	↓-3.1
4/20 09:00	73.1	↓-3.2
4/20 09:10	69.7	↓-3.4
4/20 09:20	66.3	↓-3.4
4/20 09:30	62.8	↓-3.5
4/20 09:40	59.3	↓-3.5
4/20 09:50	55.7	↓-3.6	最大潮位差
4/20 10:00	52.1	↓-3.6	最大潮位差
4/20 10:10	48.6	↓-3.5
4/20 10:20	45.1	↓-3.5
4/20 10:30	41.6	↓-3.5
4/20 10:40	38.3	↓-3.3
4/20 10:50	35.0	↓-3.3
4/20 11:00	31.9	↓-3.1
4/20 11:10	28.9	↓-3.0
4/20 11:20	26.1	↓-2.8
4/20 11:30	23.5	↓-2.6
4/20 11:40	21.1	↓-2.4
4/20 11:50	18.8	↓-2.3
4/20 12:00	16.8	↓-2.0
4/20 12:10	15.1	↓-1.7
4/20 12:20	13.6	↓-1.5
4/20 12:30	12.3	↓-1.3
4/20 12:40	11.3	↓-1.0
4/20 12:50	10.5	↓-0.8
4/20 13:00	10.0	↓-0.5
4/20 13:10	9.7	↓-0.3	干潮
4/20 13:20	9.7	0
4/20 13:30	10.0	↑0.3
4/20 13:40	10.5	↑0.5
4/20 13:50	11.2	↑0.7
4/20 14:00	12.2	↑1.0
4/20 14:10	13.4	↑1.2
4/20 14:20	14.8	↑1.4
4/20 14:30	16.3	↑1.5
4/20 14:40	18.1	↑1.8
4/20 14:50	20.1	↑2.0
4/20 15:00	22.2	↑2.1
4/20 15:10	24.4	↑2.2
4/20 15:20	26.8	↑2.4
4/20 15:30	29.4	↑2.6
4/20 15:40	32.0	↑2.6
4/20 15:50	34.7	↑2.7
4/20 16:00	37.5	↑2.8
4/20 16:10	40.4	↑2.9
4/20 16:20	43.3	↑2.9
4/20 16:30	46.3	↑3.0
4/20 16:40	49.3	↑3.0
4/20 16:50	52.2	↑2.9
4/20 17:00	55.2	↑3.0
4/20 17:10	58.2	↑3.0
4/20 17:20	61.2	↑3.0
4/20 17:30	64.1	↑2.9
4/20 17:40	66.9	↑2.8
4/20 17:50	69.7	↑2.8
4/20 18:00	72.4	↑2.7
4/20 18:10	74.9	↑2.5
4/20 18:20	77.4	↑2.5
4/20 18:30	79.8	↑2.4
4/20 18:40	82.0	↑2.2
4/20 18:50	84.1	↑2.1
4/20 19:00	86.1	↑2.0
4/20 19:10	87.9	↑1.8
4/20 19:20	89.5	↑1.6
4/20 19:30	90.9	↑1.4
4/20 19:40	92.2	↑1.3
4/20 19:50	93.3	↑1.1
4/20 20:00	94.1	↑0.8
4/20 20:10	94.9	↑0.8
4/20 20:20	95.4	↑0.5
4/20 20:30	95.7	↑0.3
4/20 20:40	95.9	↑0.2	満潮
4/20 20:50	95.8	↓-0.1
4/20 21:00	95.6	↓-0.2
4/20 21:10	95.3	↓-0.3
4/20 21:20	94.8	↓-0.5
4/20 21:30	94.1	↓-0.7
4/20 21:40	93.4	↓-0.7
4/20 21:50	92.5	↓-0.9
4/20 22:00	91.5	↓-1.0
4/20 22:10	90.4	↓-1.1
4/20 22:20	89.3	↓-1.1
4/20 22:30	88.1	↓-1.2
4/20 22:40	86.9	↓-1.2
4/20 22:50	85.7	↓-1.2
4/20 23:00	84.4	↓-1.3
4/20 23:10	83.2	↓-1.2
4/20 23:20	82.0	↓-1.2
4/20 23:30	80.9	↓-1.1
4/20 23:40	79.8	↓-1.1
4/20 23:50	78.8	↓-1.0