31 (土)	05:46	10:20	15:24	22:51
	119cm	91cm	124cm	0cm
大潮 出 06:49 入 16:34 出 17:02 入 07:21

那珂湊（茨城）2039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	16.6	↑2.9
12/31 00:10	19.6	↑3.0
12/31 00:20	22.9	↑3.3
12/31 00:30	26.4	↑3.5
12/31 00:40	30.0	↑3.6
12/31 00:50	33.8	↑3.8
12/31 01:00	37.7	↑3.9
12/31 01:10	41.7	↑4.0
12/31 01:20	45.8	↑4.1
12/31 01:30	49.9	↑4.1
12/31 01:40	54.1	↑4.2
12/31 01:50	58.3	↑4.2
12/31 02:00	62.5	↑4.2
12/31 02:10	66.6	↑4.1
12/31 02:20	70.7	↑4.1
12/31 02:30	74.8	↑4.1
12/31 02:40	78.7	↑3.9
12/31 02:50	82.6	↑3.9
12/31 03:00	86.3	↑3.7
12/31 03:10	89.9	↑3.6
12/31 03:20	93.3	↑3.4
12/31 03:30	96.6	↑3.3
12/31 03:40	99.6	↑3.0
12/31 03:50	102.5	↑2.9
12/31 04:00	105.1	↑2.6
12/31 04:10	107.5	↑2.4
12/31 04:20	109.7	↑2.2
12/31 04:30	111.6	↑1.9
12/31 04:40	113.3	↑1.7
12/31 04:50	114.8	↑1.5
12/31 05:00	116.0	↑1.2
12/31 05:10	116.9	↑0.9
12/31 05:20	117.6	↑0.7
12/31 05:30	118.1	↑0.5
12/31 05:40	118.3	↑0.2	満潮
12/31 05:50	118.3	0
12/31 06:00	118.1	↓-0.2
12/31 06:10	117.6	↓-0.5
12/31 06:20	117.0	↓-0.6
12/31 06:30	116.2	↓-0.8
12/31 06:40	115.2	↓-1.0
12/31 06:50	114.1	↓-1.1
12/31 07:00	112.9	↓-1.2
12/31 07:10	111.5	↓-1.4
12/31 07:20	110.1	↓-1.4
12/31 07:30	108.6	↓-1.5
12/31 07:40	107.0	↓-1.6
12/31 07:50	105.4	↓-1.6
12/31 08:00	103.8	↓-1.6
12/31 08:10	102.3	↓-1.5
12/31 08:20	100.7	↓-1.6
12/31 08:30	99.2	↓-1.5
12/31 08:40	97.8	↓-1.4
12/31 08:50	96.5	↓-1.3
12/31 09:00	95.2	↓-1.3
12/31 09:10	94.1	↓-1.1
12/31 09:20	93.1	↓-1.0
12/31 09:30	92.3	↓-0.8
12/31 09:40	91.6	↓-0.7
12/31 09:50	91.0	↓-0.6
12/31 10:00	90.6	↓-0.4
12/31 10:10	90.4	↓-0.2	干潮
12/31 10:20	90.3	↓-0.1	干潮
12/31 10:30	90.4	↑0.1
12/31 10:40	90.7	↑0.3
12/31 10:50	91.1	↑0.4
12/31 11:00	91.7	↑0.6
12/31 11:10	92.4	↑0.7
12/31 11:20	93.3	↑0.9
12/31 11:30	94.3	↑1.0
12/31 11:40	95.5	↑1.2
12/31 11:50	96.7	↑1.2
12/31 12:00	98.1	↑1.4
12/31 12:10	99.5	↑1.4
12/31 12:20	101.0	↑1.5
12/31 12:30	102.6	↑1.6
12/31 12:40	104.2	↑1.6
12/31 12:50	105.9	↑1.7
12/31 13:00	107.5	↑1.6
12/31 13:10	109.2	↑1.7
12/31 13:20	110.8	↑1.6
12/31 13:30	112.4	↑1.6
12/31 13:40	114.0	↑1.6
12/31 13:50	115.4	↑1.4
12/31 14:00	116.8	↑1.4
12/31 14:10	118.1	↑1.3
12/31 14:20	119.3	↑1.2
12/31 14:30	120.3	↑1.0
12/31 14:40	121.2	↑0.9
12/31 14:50	122.0	↑0.8
12/31 15:00	122.5	↑0.5
12/31 15:10	122.9	↑0.4
12/31 15:20	123.0	↑0.1	満潮
12/31 15:30	123.0	0
12/31 15:40	122.7	↓-0.3
12/31 15:50	122.2	↓-0.5
12/31 16:00	121.5	↓-0.7
12/31 16:10	120.5	↓-1.0
12/31 16:20	119.2	↓-1.3
12/31 16:30	117.7	↓-1.5
12/31 16:40	116.0	↓-1.7
12/31 16:50	114.0	↓-2.0
12/31 17:00	111.8	↓-2.2
12/31 17:10	109.3	↓-2.5
12/31 17:20	106.5	↓-2.8
12/31 17:30	103.5	↓-3.0
12/31 17:40	100.4	↓-3.1
12/31 17:50	96.9	↓-3.5
12/31 18:00	93.3	↓-3.6
12/31 18:10	89.6	↓-3.7
12/31 18:20	85.6	↓-4.0
12/31 18:30	81.5	↓-4.1
12/31 18:40	77.3	↓-4.2
12/31 18:50	73.0	↓-4.3
12/31 19:00	68.5	↓-4.5	最大潮位差
12/31 19:10	64.1	↓-4.4
12/31 19:20	59.6	↓-4.5	最大潮位差
12/31 19:30	55.1	↓-4.5	最大潮位差
12/31 19:40	50.6	↓-4.5	最大潮位差
12/31 19:50	46.1	↓-4.5	最大潮位差
12/31 20:00	41.8	↓-4.3
12/31 20:10	37.5	↓-4.3
12/31 20:20	33.3	↓-4.2
12/31 20:30	29.3	↓-4.0
12/31 20:40	25.5	↓-3.8
12/31 20:50	21.8	↓-3.7
12/31 21:00	18.4	↓-3.4
12/31 21:10	15.2	↓-3.2
12/31 21:20	12.3	↓-2.9
12/31 21:30	9.6	↓-2.7
12/31 21:40	7.2	↓-2.4
12/31 21:50	5.1	↓-2.1
12/31 22:00	3.3	↓-1.8
12/31 22:10	1.9	↓-1.4
12/31 22:20	0.7	↓-1.2
12/31 22:30	-0.1	↓-0.8
12/31 22:40	-0.6	↓-0.5
12/31 22:50	-0.8	↓-0.2	干潮
12/31 23:00	-0.6	↑0.2
12/31 23:10	-0.1	↑0.5
12/31 23:20	0.7	↑0.8
12/31 23:30	1.8	↑1.1
12/31 23:40	3.3	↑1.5
12/31 23:50	5.0	↑1.7