31 (月)	01:43	05:06	11:07	19:20
	98cm	90cm	127cm	22cm
中潮 出 06:49 入 16:34 出 02:24 入 12:46

日立（茨城）2029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	92.1	↑1.2
12/31 00:10	93.1	↑1.0
12/31 00:20	94.1	↑1.0
12/31 00:30	94.9	↑0.8
12/31 00:40	95.6	↑0.7
12/31 00:50	96.2	↑0.6
12/31 01:00	96.7	↑0.5
12/31 01:10	97.1	↑0.4
12/31 01:20	97.4	↑0.3
12/31 01:30	97.6	↑0.2
12/31 01:40	97.6	0	満潮
12/31 01:50	97.6	0
12/31 02:00	97.5	↓-0.1
12/31 02:10	97.3	↓-0.2
12/31 02:20	97.0	↓-0.3
12/31 02:30	96.6	↓-0.4
12/31 02:40	96.1	↓-0.5
12/31 02:50	95.6	↓-0.5
12/31 03:00	95.0	↓-0.6
12/31 03:10	94.5	↓-0.5
12/31 03:20	93.8	↓-0.7
12/31 03:30	93.2	↓-0.6
12/31 03:40	92.6	↓-0.6
12/31 03:50	92.0	↓-0.6
12/31 04:00	91.4	↓-0.6
12/31 04:10	90.9	↓-0.5
12/31 04:20	90.4	↓-0.5
12/31 04:30	90.0	↓-0.4
12/31 04:40	89.7	↓-0.3
12/31 04:50	89.5	↓-0.2
12/31 05:00	89.4	↓-0.1	干潮
12/31 05:10	89.4	0
12/31 05:20	89.5	↑0.1
12/31 05:30	89.7	↑0.2
12/31 05:40	90.1	↑0.4
12/31 05:50	90.5	↑0.4
12/31 06:00	91.1	↑0.6
12/31 06:10	91.8	↑0.7
12/31 06:20	92.6	↑0.8
12/31 06:30	93.5	↑0.9
12/31 06:40	94.5	↑1.0
12/31 06:50	95.6	↑1.1
12/31 07:00	96.7	↑1.1
12/31 07:10	98.0	↑1.3
12/31 07:20	99.3	↑1.3
12/31 07:30	100.6	↑1.3
12/31 07:40	102.1	↑1.5
12/31 07:50	103.6	↑1.5
12/31 08:00	105.1	↑1.5
12/31 08:10	106.6	↑1.5
12/31 08:20	108.2	↑1.6
12/31 08:30	109.8	↑1.6
12/31 08:40	111.4	↑1.6
12/31 08:50	112.9	↑1.5
12/31 09:00	114.5	↑1.6
12/31 09:10	116.0	↑1.5
12/31 09:20	117.5	↑1.5
12/31 09:30	118.9	↑1.4
12/31 09:40	120.2	↑1.3
12/31 09:50	121.4	↑1.2
12/31 10:00	122.5	↑1.1
12/31 10:10	123.5	↑1.0
12/31 10:20	124.3	↑0.8
12/31 10:30	125.0	↑0.7
12/31 10:40	125.6	↑0.6
12/31 10:50	126.0	↑0.4
12/31 11:00	126.2	↑0.2	満潮
12/31 11:10	126.2	0
12/31 11:20	126.0	↓-0.2
12/31 11:30	125.7	↓-0.3
12/31 11:40	125.2	↓-0.5
12/31 11:50	124.5	↓-0.7
12/31 12:00	123.6	↓-0.9
12/31 12:10	122.5	↓-1.1
12/31 12:20	121.2	↓-1.3
12/31 12:30	119.8	↓-1.4
12/31 12:40	118.2	↓-1.6
12/31 12:50	116.4	↓-1.8
12/31 13:00	114.5	↓-1.9
12/31 13:10	112.4	↓-2.1
12/31 13:20	110.2	↓-2.2
12/31 13:30	107.9	↓-2.3
12/31 13:40	105.4	↓-2.5
12/31 13:50	102.7	↓-2.7
12/31 14:00	100.0	↓-2.7
12/31 14:10	97.1	↓-2.9
12/31 14:20	94.1	↓-3.0
12/31 14:30	91.0	↓-3.1
12/31 14:40	87.9	↓-3.1
12/31 14:50	84.6	↓-3.3
12/31 15:00	81.3	↓-3.3
12/31 15:10	77.9	↓-3.4
12/31 15:20	74.5	↓-3.4
12/31 15:30	71.0	↓-3.5	最大潮位差
12/31 15:40	67.6	↓-3.4
12/31 15:50	64.2	↓-3.4
12/31 16:00	60.7	↓-3.5	最大潮位差
12/31 16:10	57.4	↓-3.3
12/31 16:20	54.1	↓-3.3
12/31 16:30	50.9	↓-3.2
12/31 16:40	47.8	↓-3.1
12/31 16:50	44.8	↓-3.0
12/31 17:00	42.0	↓-2.8
12/31 17:10	39.3	↓-2.7
12/31 17:20	36.8	↓-2.5
12/31 17:30	34.5	↓-2.3
12/31 17:40	32.3	↓-2.2
12/31 17:50	30.3	↓-2.0
12/31 18:00	28.6	↓-1.7
12/31 18:10	27.0	↓-1.6
12/31 18:20	25.6	↓-1.4
12/31 18:30	24.5	↓-1.1
12/31 18:40	23.5	↓-1.0
12/31 18:50	22.8	↓-0.7
12/31 19:00	22.3	↓-0.5
12/31 19:10	22.0	↓-0.3	干潮
12/31 19:20	21.9	↓-0.1	干潮
12/31 19:30	22.0	↑0.1
12/31 19:40	22.4	↑0.4
12/31 19:50	23.0	↑0.6
12/31 20:00	23.7	↑0.7
12/31 20:10	24.7	↑1.0
12/31 20:20	25.9	↑1.2
12/31 20:30	27.3	↑1.4
12/31 20:40	29.0	↑1.7
12/31 20:50	30.8	↑1.8
12/31 21:00	32.7	↑1.9
12/31 21:10	34.9	↑2.2
12/31 21:20	37.2	↑2.3
12/31 21:30	39.7	↑2.5
12/31 21:40	42.3	↑2.6
12/31 21:50	45.0	↑2.7
12/31 22:00	47.8	↑2.8
12/31 22:10	50.7	↑2.9
12/31 22:20	53.6	↑2.9
12/31 22:30	56.6	↑3.0
12/31 22:40	59.6	↑3.0
12/31 22:50	62.7	↑3.1
12/31 23:00	65.7	↑3.0
12/31 23:10	68.7	↑3.0
12/31 23:20	71.6	↑2.9
12/31 23:30	74.5	↑2.9
12/31 23:40	77.4	↑2.9
12/31 23:50	80.1	↑2.7