31 (日)	05:01	09:35	14:36	22:08
	120cm	92cm	126cm	-6cm
大潮 出 06:49 入 16:34 出 16:05 入 06:14

那珂湊（茨城）2028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	32.6	↑3.8
12/31 00:10	36.6	↑4.0
12/31 00:20	40.7	↑4.1
12/31 00:30	44.8	↑4.1
12/31 00:40	49.0	↑4.2
12/31 00:50	53.3	↑4.3
12/31 01:00	57.5	↑4.2
12/31 01:10	61.8	↑4.3
12/31 01:20	66.0	↑4.2
12/31 01:30	70.2	↑4.2
12/31 01:40	74.3	↑4.1
12/31 01:50	78.3	↑4.0
12/31 02:00	82.2	↑3.9
12/31 02:10	86.0	↑3.8
12/31 02:20	89.7	↑3.7
12/31 02:30	93.2	↑3.5
12/31 02:40	96.5	↑3.3
12/31 02:50	99.6	↑3.1
12/31 03:00	102.5	↑2.9
12/31 03:10	105.2	↑2.7
12/31 03:20	107.7	↑2.5
12/31 03:30	110.0	↑2.3
12/31 03:40	112.0	↑2.0
12/31 03:50	113.8	↑1.8
12/31 04:00	115.4	↑1.6
12/31 04:10	116.7	↑1.3
12/31 04:20	117.7	↑1.0
12/31 04:30	118.5	↑0.8
12/31 04:40	119.1	↑0.6
12/31 04:50	119.4	↑0.3
12/31 05:00	119.5	↑0.1	満潮
12/31 05:10	119.4	↓-0.1
12/31 05:20	119.1	↓-0.3
12/31 05:30	118.5	↓-0.6
12/31 05:40	117.8	↓-0.7
12/31 05:50	117.0	↓-0.8
12/31 06:00	115.9	↓-1.1
12/31 06:10	114.8	↓-1.1
12/31 06:20	113.5	↓-1.3
12/31 06:30	112.1	↓-1.4
12/31 06:40	110.7	↓-1.4
12/31 06:50	109.2	↓-1.5
12/31 07:00	107.6	↓-1.6
12/31 07:10	106.1	↓-1.5
12/31 07:20	104.5	↓-1.6
12/31 07:30	103.0	↓-1.5
12/31 07:40	101.5	↓-1.5
12/31 07:50	100.0	↓-1.5
12/31 08:00	98.7	↓-1.3
12/31 08:10	97.4	↓-1.3
12/31 08:20	96.2	↓-1.2
12/31 08:30	95.1	↓-1.1
12/31 08:40	94.2	↓-0.9
12/31 08:50	93.4	↓-0.8
12/31 09:00	92.8	↓-0.6
12/31 09:10	92.3	↓-0.5
12/31 09:20	92.0	↓-0.3
12/31 09:30	91.8	↓-0.2	干潮
12/31 09:40	91.8	0
12/31 09:50	92.0	↑0.2
12/31 10:00	92.4	↑0.4
12/31 10:10	92.9	↑0.5
12/31 10:20	93.6	↑0.7
12/31 10:30	94.4	↑0.8
12/31 10:40	95.4	↑1.0
12/31 10:50	96.5	↑1.1
12/31 11:00	97.7	↑1.2
12/31 11:10	99.0	↑1.3
12/31 11:20	100.5	↑1.5
12/31 11:30	102.0	↑1.5
12/31 11:40	103.6	↑1.6
12/31 11:50	105.2	↑1.6
12/31 12:00	106.9	↑1.7
12/31 12:10	108.6	↑1.7
12/31 12:20	110.3	↑1.7
12/31 12:30	112.0	↑1.7
12/31 12:40	113.7	↑1.7
12/31 12:50	115.3	↑1.6
12/31 13:00	116.8	↑1.5
12/31 13:10	118.3	↑1.5
12/31 13:20	119.6	↑1.3
12/31 13:30	120.9	↑1.3
12/31 13:40	122.0	↑1.1
12/31 13:50	122.9	↑0.9
12/31 14:00	123.7	↑0.8
12/31 14:10	124.4	↑0.7
12/31 14:20	124.8	↑0.4
12/31 14:30	125.0	↑0.2	満潮
12/31 14:40	125.0	0
12/31 14:50	124.7	↓-0.3
12/31 15:00	124.3	↓-0.4
12/31 15:10	123.6	↓-0.7
12/31 15:20	122.6	↓-1.0
12/31 15:30	121.4	↓-1.2
12/31 15:40	119.9	↓-1.5
12/31 15:50	118.1	↓-1.8
12/31 16:00	116.1	↓-2.0
12/31 16:10	113.9	↓-2.2
12/31 16:20	111.3	↓-2.6
12/31 16:30	108.6	↓-2.7
12/31 16:40	105.6	↓-3.0
12/31 16:50	102.3	↓-3.3
12/31 17:00	98.8	↓-3.5
12/31 17:10	95.2	↓-3.6
12/31 17:20	91.3	↓-3.9
12/31 17:30	87.2	↓-4.1
12/31 17:40	83.0	↓-4.2
12/31 17:50	78.7	↓-4.3
12/31 18:00	74.2	↓-4.5
12/31 18:10	69.6	↓-4.6
12/31 18:20	65.0	↓-4.6
12/31 18:30	60.3	↓-4.7	最大潮位差
12/31 18:40	55.6	↓-4.7	最大潮位差
12/31 18:50	50.9	↓-4.7	最大潮位差
12/31 19:00	46.2	↓-4.7	最大潮位差
12/31 19:10	41.6	↓-4.6
12/31 19:20	37.0	↓-4.6
12/31 19:30	32.6	↓-4.4
12/31 19:40	28.3	↓-4.3
12/31 19:50	24.2	↓-4.1
12/31 20:00	20.2	↓-4.0
12/31 20:10	16.5	↓-3.7
12/31 20:20	12.9	↓-3.6
12/31 20:30	9.7	↓-3.2
12/31 20:40	6.7	↓-3.0
12/31 20:50	3.9	↓-2.8
12/31 21:00	1.5	↓-2.4
12/31 21:10	-0.6	↓-2.1
12/31 21:20	-2.4	↓-1.8
12/31 21:30	-3.8	↓-1.4
12/31 21:40	-4.9	↓-1.1
12/31 21:50	-5.7	↓-0.8
12/31 22:00	-6.1	↓-0.4	干潮
12/31 22:10	-6.1	0
12/31 22:20	-5.8	↑0.3
12/31 22:30	-5.2	↑0.6
12/31 22:40	-4.2	↑1.0
12/31 22:50	-2.9	↑1.3
12/31 23:00	-1.3	↑1.6
12/31 23:10	0.7	↑2.0
12/31 23:20	3.0	↑2.3
12/31 23:30	5.5	↑2.5
12/31 23:40	8.3	↑2.8
12/31 23:50	11.4	↑3.1