31 (火)	04:41	09:12	14:16	21:48
	115cm	91cm	123cm	2cm
大潮 出 06:49 入 16:34 出 15:37 入 05:48

那珂湊（茨城）2047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	42.8	↑3.7
12/31 00:10	46.6	↑3.8
12/31 00:20	50.4	↑3.8
12/31 00:30	54.2	↑3.8
12/31 00:40	58.1	↑3.9
12/31 00:50	61.9	↑3.8
12/31 01:00	65.8	↑3.9
12/31 01:10	69.6	↑3.8
12/31 01:20	73.3	↑3.7
12/31 01:30	77.0	↑3.7
12/31 01:40	80.6	↑3.6
12/31 01:50	84.0	↑3.4
12/31 02:00	87.3	↑3.3
12/31 02:10	90.5	↑3.2
12/31 02:20	93.5	↑3.0
12/31 02:30	96.4	↑2.9
12/31 02:40	99.1	↑2.7
12/31 02:50	101.5	↑2.4
12/31 03:00	103.8	↑2.3
12/31 03:10	105.9	↑2.1
12/31 03:20	107.7	↑1.8
12/31 03:30	109.4	↑1.7
12/31 03:40	110.8	↑1.4
12/31 03:50	112.0	↑1.2
12/31 04:00	112.9	↑0.9
12/31 04:10	113.7	↑0.8
12/31 04:20	114.2	↑0.5
12/31 04:30	114.5	↑0.3
12/31 04:40	114.6	↑0.1	満潮
12/31 04:50	114.5	↓-0.1
12/31 05:00	114.3	↓-0.2
12/31 05:10	113.8	↓-0.5
12/31 05:20	113.2	↓-0.6
12/31 05:30	112.4	↓-0.8
12/31 05:40	111.5	↓-0.9
12/31 05:50	110.5	↓-1.0
12/31 06:00	109.4	↓-1.1
12/31 06:10	108.2	↓-1.2
12/31 06:20	106.9	↓-1.3
12/31 06:30	105.5	↓-1.4
12/31 06:40	104.2	↓-1.3
12/31 06:50	102.8	↓-1.4
12/31 07:00	101.4	↓-1.4
12/31 07:10	100.0	↓-1.4
12/31 07:20	98.7	↓-1.3
12/31 07:30	97.4	↓-1.3
12/31 07:40	96.2	↓-1.2
12/31 07:50	95.1	↓-1.1
12/31 08:00	94.0	↓-1.1
12/31 08:10	93.1	↓-0.9
12/31 08:20	92.3	↓-0.8
12/31 08:30	91.6	↓-0.7
12/31 08:40	91.1	↓-0.5
12/31 08:50	90.7	↓-0.4
12/31 09:00	90.4	↓-0.3
12/31 09:10	90.3	↓-0.1	干潮
12/31 09:20	90.4	↑0.1
12/31 09:30	90.6	↑0.2
12/31 09:40	91.0	↑0.4
12/31 09:50	91.5	↑0.5
12/31 10:00	92.1	↑0.6
12/31 10:10	92.9	↑0.8
12/31 10:20	93.9	↑1.0
12/31 10:30	94.9	↑1.0
12/31 10:40	96.1	↑1.2
12/31 10:50	97.4	↑1.3
12/31 11:00	98.8	↑1.4
12/31 11:10	100.2	↑1.4
12/31 11:20	101.8	↑1.6
12/31 11:30	103.3	↑1.5
12/31 11:40	104.9	↑1.6
12/31 11:50	106.5	↑1.6
12/31 12:00	108.2	↑1.7
12/31 12:10	109.8	↑1.6
12/31 12:20	111.4	↑1.6
12/31 12:30	112.9	↑1.5
12/31 12:40	114.4	↑1.5
12/31 12:50	115.8	↑1.4
12/31 13:00	117.1	↑1.3
12/31 13:10	118.3	↑1.2
12/31 13:20	119.3	↑1.0
12/31 13:30	120.2	↑0.9
12/31 13:40	121.0	↑0.8
12/31 13:50	121.6	↑0.6
12/31 14:00	122.0	↑0.4
12/31 14:10	122.2	↑0.2	満潮
12/31 14:20	122.2	0
12/31 14:30	122.0	↓-0.2
12/31 14:40	121.6	↓-0.4
12/31 14:50	120.9	↓-0.7
12/31 15:00	120.0	↓-0.9
12/31 15:10	118.9	↓-1.1
12/31 15:20	117.5	↓-1.4
12/31 15:30	115.9	↓-1.6
12/31 15:40	114.0	↓-1.9
12/31 15:50	111.9	↓-2.1
12/31 16:00	109.6	↓-2.3
12/31 16:10	107.0	↓-2.6
12/31 16:20	104.2	↓-2.8
12/31 16:30	101.2	↓-3.0
12/31 16:40	98.0	↓-3.2
12/31 16:50	94.6	↓-3.4
12/31 17:00	91.0	↓-3.6
12/31 17:10	87.3	↓-3.7
12/31 17:20	83.4	↓-3.9
12/31 17:30	79.4	↓-4.0
12/31 17:40	75.2	↓-4.2
12/31 17:50	71.0	↓-4.2
12/31 18:00	66.7	↓-4.3
12/31 18:10	62.4	↓-4.3
12/31 18:20	58.0	↓-4.4	最大潮位差
12/31 18:30	53.7	↓-4.3
12/31 18:40	49.4	↓-4.3
12/31 18:50	45.1	↓-4.3
12/31 19:00	40.9	↓-4.2
12/31 19:10	36.8	↓-4.1
12/31 19:20	32.9	↓-3.9
12/31 19:30	29.0	↓-3.9
12/31 19:40	25.4	↓-3.6
12/31 19:50	21.9	↓-3.5
12/31 20:00	18.7	↓-3.2
12/31 20:10	15.6	↓-3.1
12/31 20:20	12.9	↓-2.7
12/31 20:30	10.4	↓-2.5
12/31 20:40	8.1	↓-2.3
12/31 20:50	6.2	↓-1.9
12/31 21:00	4.5	↓-1.7
12/31 21:10	3.2	↓-1.3
12/31 21:20	2.2	↓-1.0
12/31 21:30	1.5	↓-0.7
12/31 21:40	1.1	↓-0.4	干潮
12/31 21:50	1.0	↓-0.1
12/31 22:00	1.3	↑0.3
12/31 22:10	1.9	↑0.6
12/31 22:20	2.8	↑0.9
12/31 22:30	4.0	↑1.2
12/31 22:40	5.5	↑1.5
12/31 22:50	7.3	↑1.8
12/31 23:00	9.4	↑2.1
12/31 23:10	11.7	↑2.3
12/31 23:20	14.3	↑2.6
12/31 23:30	17.2	↑2.9
12/31 23:40	20.2	↑3.0
12/31 23:50	23.5	↑3.3