31 (日)	03:48	08:32	13:58	21:17
	109cm	82cm	123cm	9cm
大潮 出 06:49 入 16:34 出 04:47 入 15:11

那珂湊（茨城）2051年12月31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
12/31 00:00	60.9	↑3.4
12/31 00:10	64.4	↑3.5
12/31 00:20	67.8	↑3.4
12/31 00:30	71.2	↑3.4
12/31 00:40	74.5	↑3.3
12/31 00:50	77.7	↑3.2
12/31 01:00	80.8	↑3.1
12/31 01:10	83.9	↑3.1
12/31 01:20	86.8	↑2.9
12/31 01:30	89.5	↑2.7
12/31 01:40	92.2	↑2.7
12/31 01:50	94.6	↑2.4
12/31 02:00	96.9	↑2.3
12/31 02:10	99.0	↑2.1
12/31 02:20	100.9	↑1.9
12/31 02:30	102.6	↑1.7
12/31 02:40	104.0	↑1.4
12/31 02:50	105.3	↑1.3
12/31 03:00	106.4	↑1.1
12/31 03:10	107.3	↑0.9
12/31 03:20	107.9	↑0.6
12/31 03:30	108.4	↑0.5
12/31 03:40	108.6	↑0.2	満潮
12/31 03:50	108.7	↑0.1
12/31 04:00	108.5	↓-0.2
12/31 04:10	108.2	↓-0.3
12/31 04:20	107.7	↓-0.5
12/31 04:30	107.0	↓-0.7
12/31 04:40	106.2	↓-0.8
12/31 04:50	105.3	↓-0.9
12/31 05:00	104.2	↓-1.1
12/31 05:10	103.0	↓-1.2
12/31 05:20	101.7	↓-1.3
12/31 05:30	100.3	↓-1.4
12/31 05:40	98.9	↓-1.4
12/31 05:50	97.4	↓-1.5
12/31 06:00	96.0	↓-1.4
12/31 06:10	94.5	↓-1.5
12/31 06:20	93.0	↓-1.5
12/31 06:30	91.5	↓-1.5
12/31 06:40	90.1	↓-1.4
12/31 06:50	88.7	↓-1.4
12/31 07:00	87.4	↓-1.3
12/31 07:10	86.2	↓-1.2
12/31 07:20	85.1	↓-1.1
12/31 07:30	84.1	↓-1.0
12/31 07:40	83.2	↓-0.9
12/31 07:50	82.5	↓-0.7
12/31 08:00	81.9	↓-0.6
12/31 08:10	81.5	↓-0.4
12/31 08:20	81.2	↓-0.3
12/31 08:30	81.2	0	干潮
12/31 08:40	81.2	0
12/31 08:50	81.5	↑0.3
12/31 09:00	81.9	↑0.4
12/31 09:10	82.5	↑0.6
12/31 09:20	83.2	↑0.7
12/31 09:30	84.1	↑0.9
12/31 09:40	85.2	↑1.1
12/31 09:50	86.4	↑1.2
12/31 10:00	87.7	↑1.3
12/31 10:10	89.2	↑1.5
12/31 10:20	90.8	↑1.6
12/31 10:30	92.4	↑1.6
12/31 10:40	94.2	↑1.8
12/31 10:50	96.0	↑1.8
12/31 11:00	97.9	↑1.9
12/31 11:10	99.9	↑2.0
12/31 11:20	101.8	↑1.9
12/31 11:30	103.8	↑2.0
12/31 11:40	105.7	↑1.9
12/31 11:50	107.6	↑1.9
12/31 12:00	109.5	↑1.9
12/31 12:10	111.3	↑1.8
12/31 12:20	113.0	↑1.7
12/31 12:30	114.6	↑1.6
12/31 12:40	116.1	↑1.5
12/31 12:50	117.4	↑1.3
12/31 13:00	118.6	↑1.2
12/31 13:10	119.7	↑1.1
12/31 13:20	120.6	↑0.9
12/31 13:30	121.2	↑0.6
12/31 13:40	121.7	↑0.5
12/31 13:50	122.0	↑0.3	満潮
12/31 14:00	122.0	0
12/31 14:10	121.8	↓-0.2
12/31 14:20	121.4	↓-0.4
12/31 14:30	120.8	↓-0.6
12/31 14:40	119.9	↓-0.9
12/31 14:50	118.7	↓-1.2
12/31 15:00	117.3	↓-1.4
12/31 15:10	115.7	↓-1.6
12/31 15:20	113.8	↓-1.9
12/31 15:30	111.7	↓-2.1
12/31 15:40	109.3	↓-2.4
12/31 15:50	106.7	↓-2.6
12/31 16:00	103.9	↓-2.8
12/31 16:10	100.9	↓-3.0
12/31 16:20	97.8	↓-3.1
12/31 16:30	94.4	↓-3.4
12/31 16:40	90.8	↓-3.6
12/31 16:50	87.2	↓-3.6
12/31 17:00	83.4	↓-3.8
12/31 17:10	79.5	↓-3.9
12/31 17:20	75.4	↓-4.1
12/31 17:30	71.4	↓-4.0
12/31 17:40	67.3	↓-4.1
12/31 17:50	63.1	↓-4.2	最大潮位差
12/31 18:00	59.0	↓-4.1
12/31 18:10	54.9	↓-4.1
12/31 18:20	50.8	↓-4.1
12/31 18:30	46.8	↓-4.0
12/31 18:40	42.9	↓-3.9
12/31 18:50	39.1	↓-3.8
12/31 19:00	35.5	↓-3.6
12/31 19:10	32.0	↓-3.5
12/31 19:20	28.7	↓-3.3
12/31 19:30	25.6	↓-3.1
12/31 19:40	22.7	↓-2.9
12/31 19:50	20.1	↓-2.6
12/31 20:00	17.7	↓-2.4
12/31 20:10	15.6	↓-2.1
12/31 20:20	13.7	↓-1.9
12/31 20:30	12.2	↓-1.5
12/31 20:40	10.9	↓-1.3
12/31 20:50	9.9	↓-1.0
12/31 21:00	9.3	↓-0.6
12/31 21:10	8.9	↓-0.4	干潮
12/31 21:20	8.9	0
12/31 21:30	9.2	↑0.3
12/31 21:40	9.8	↑0.6
12/31 21:50	10.7	↑0.9
12/31 22:00	11.8	↑1.1
12/31 22:10	13.3	↑1.5
12/31 22:20	15.1	↑1.8
12/31 22:30	17.1	↑2.0
12/31 22:40	19.3	↑2.2
12/31 22:50	21.8	↑2.5
12/31 23:00	24.6	↑2.8
12/31 23:10	27.5	↑2.9
12/31 23:20	30.6	↑3.1
12/31 23:30	33.9	↑3.3
12/31 23:40	37.3	↑3.4
12/31 23:50	40.9	↑3.6