31 (土)	06:42	11:50	17:11	-
	121cm	77cm	119cm	-
中潮 出 06:49 入 16:34 出 19:44 入 08:28

那珂湊（茨城）2050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	6.3	↑0.8
12/31 00:10	7.3	↑1.0
12/31 00:20	8.7	↑1.4
12/31 00:30	10.4	↑1.7
12/31 00:40	12.4	↑2.0
12/31 00:50	14.6	↑2.2
12/31 01:00	17.1	↑2.5
12/31 01:10	19.9	↑2.8
12/31 01:20	22.9	↑3.0
12/31 01:30	26.1	↑3.2
12/31 01:40	29.5	↑3.4
12/31 01:50	33.1	↑3.6
12/31 02:00	36.8	↑3.7
12/31 02:10	40.7	↑3.9
12/31 02:20	44.7	↑4.0
12/31 02:30	48.8	↑4.1
12/31 02:40	53.0	↑4.2
12/31 02:50	57.2	↑4.2
12/31 03:00	61.4	↑4.2
12/31 03:10	65.7	↑4.3	最大潮位差
12/31 03:20	69.9	↑4.2
12/31 03:30	74.1	↑4.2
12/31 03:40	78.2	↑4.1
12/31 03:50	82.3	↑4.1
12/31 04:00	86.2	↑3.9
12/31 04:10	90.0	↑3.8
12/31 04:20	93.6	↑3.6
12/31 04:30	97.1	↑3.5
12/31 04:40	100.4	↑3.3
12/31 04:50	103.5	↑3.1
12/31 05:00	106.4	↑2.9
12/31 05:10	109.0	↑2.6
12/31 05:20	111.4	↑2.4
12/31 05:30	113.5	↑2.1
12/31 05:40	115.3	↑1.8
12/31 05:50	116.9	↑1.6
12/31 06:00	118.2	↑1.3
12/31 06:10	119.2	↑1.0
12/31 06:20	119.9	↑0.7
12/31 06:30	120.4	↑0.5
12/31 06:40	120.5	↑0.1	満潮
12/31 06:50	120.4	↓-0.1
12/31 07:00	120.0	↓-0.4
12/31 07:10	119.4	↓-0.6
12/31 07:20	118.5	↓-0.9
12/31 07:30	117.4	↓-1.1
12/31 07:40	116.1	↓-1.3
12/31 07:50	114.6	↓-1.5
12/31 08:00	112.9	↓-1.7
12/31 08:10	111.1	↓-1.8
12/31 08:20	109.2	↓-1.9
12/31 08:30	107.1	↓-2.1
12/31 08:40	105.0	↓-2.1
12/31 08:50	102.8	↓-2.2
12/31 09:00	100.6	↓-2.2
12/31 09:10	98.4	↓-2.2
12/31 09:20	96.2	↓-2.2
12/31 09:30	94.0	↓-2.2
12/31 09:40	91.9	↓-2.1
12/31 09:50	89.8	↓-2.1
12/31 10:00	87.9	↓-1.9
12/31 10:10	86.1	↓-1.8
12/31 10:20	84.4	↓-1.7
12/31 10:30	82.8	↓-1.6
12/31 10:40	81.4	↓-1.4
12/31 10:50	80.2	↓-1.2
12/31 11:00	79.2	↓-1.0
12/31 11:10	78.3	↓-0.9
12/31 11:20	77.6	↓-0.7
12/31 11:30	77.2	↓-0.4
12/31 11:40	76.9	↓-0.3	干潮
12/31 11:50	76.8	↓-0.1	干潮
12/31 12:00	76.9	↑0.1
12/31 12:10	77.2	↑0.3
12/31 12:20	77.7	↑0.5
12/31 12:30	78.4	↑0.7
12/31 12:40	79.3	↑0.9
12/31 12:50	80.3	↑1.0
12/31 13:00	81.4	↑1.1
12/31 13:10	82.8	↑1.4
12/31 13:20	84.2	↑1.4
12/31 13:30	85.8	↑1.6
12/31 13:40	87.4	↑1.6
12/31 13:50	89.2	↑1.8
12/31 14:00	91.0	↑1.8
12/31 14:10	92.9	↑1.9
12/31 14:20	94.9	↑2.0
12/31 14:30	96.8	↑1.9
12/31 14:40	98.8	↑2.0
12/31 14:50	100.8	↑2.0
12/31 15:00	102.8	↑2.0
12/31 15:10	104.7	↑1.9
12/31 15:20	106.5	↑1.8
12/31 15:30	108.3	↑1.8
12/31 15:40	110.0	↑1.7
12/31 15:50	111.6	↑1.6
12/31 16:00	113.0	↑1.4
12/31 16:10	114.3	↑1.3
12/31 16:20	115.5	↑1.2
12/31 16:30	116.5	↑1.0
12/31 16:40	117.2	↑0.7
12/31 16:50	117.8	↑0.6
12/31 17:00	118.2	↑0.4
12/31 17:10	118.3	↑0.1	満潮
12/31 17:20	118.2	↓-0.1
12/31 17:30	117.8	↓-0.4
12/31 17:40	117.2	↓-0.6
12/31 17:50	116.4	↓-0.8
12/31 18:00	115.2	↓-1.2
12/31 18:10	113.8	↓-1.4
12/31 18:20	112.1	↓-1.7
12/31 18:30	110.2	↓-1.9
12/31 18:40	108.0	↓-2.2
12/31 18:50	105.6	↓-2.4
12/31 19:00	102.9	↓-2.7
12/31 19:10	100.0	↓-2.9
12/31 19:20	96.9	↓-3.1
12/31 19:30	93.6	↓-3.3
12/31 19:40	90.1	↓-3.5
12/31 19:50	86.4	↓-3.7
12/31 20:00	82.6	↓-3.8
12/31 20:10	78.7	↓-3.9
12/31 20:20	74.7	↓-4.0
12/31 20:30	70.7	↓-4.0
12/31 20:40	66.6	↓-4.1
12/31 20:50	62.4	↓-4.2
12/31 21:00	58.3	↓-4.1
12/31 21:10	54.3	↓-4.0
12/31 21:20	50.3	↓-4.0
12/31 21:30	46.3	↓-4.0
12/31 21:40	42.5	↓-3.8
12/31 21:50	38.9	↓-3.6
12/31 22:00	35.4	↓-3.5
12/31 22:10	32.1	↓-3.3
12/31 22:20	29.0	↓-3.1
12/31 22:30	26.1	↓-2.9
12/31 22:40	23.5	↓-2.6
12/31 22:50	21.1	↓-2.4
12/31 23:00	19.0	↓-2.1
12/31 23:10	17.2	↓-1.8
12/31 23:20	15.7	↓-1.5
12/31 23:30	14.5	↓-1.2
12/31 23:40	13.6	↓-0.9
12/31 23:50	12.9	↓-0.7