4 (火)	03:04	06:29	11:31	19:40
	91cm	88cm	98cm	28cm
若潮 出 06:05 入 17:36 出 13:01 入 02:39

日立（茨城）2031年03月4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
3/4 00:00	77.2	↑1.5
3/4 00:10	78.6	↑1.4
3/4 00:20	79.9	↑1.3
3/4 00:30	81.1	↑1.2
3/4 00:40	82.3	↑1.2
3/4 00:50	83.5	↑1.2
3/4 01:00	84.5	↑1.0
3/4 01:10	85.5	↑1.0
3/4 01:20	86.4	↑0.9
3/4 01:30	87.2	↑0.8
3/4 01:40	88.0	↑0.8
3/4 01:50	88.6	↑0.6
3/4 02:00	89.2	↑0.6
3/4 02:10	89.7	↑0.5
3/4 02:20	90.0	↑0.3
3/4 02:30	90.3	↑0.3
3/4 02:40	90.6	↑0.3
3/4 02:50	90.7	↑0.1
3/4 03:00	90.8	↑0.1	満潮
3/4 03:10	90.7	↓-0.1
3/4 03:20	90.7	0
3/4 03:30	90.5	↓-0.2
3/4 03:40	90.4	↓-0.1
3/4 03:50	90.2	↓-0.2
3/4 04:00	89.9	↓-0.3
3/4 04:10	89.7	↓-0.2
3/4 04:20	89.4	↓-0.3
3/4 04:30	89.1	↓-0.3
3/4 04:40	88.9	↓-0.2
3/4 04:50	88.6	↓-0.3
3/4 05:00	88.4	↓-0.2
3/4 05:10	88.1	↓-0.3
3/4 05:20	87.9	↓-0.2
3/4 05:30	87.8	↓-0.1
3/4 05:40	87.6	↓-0.2
3/4 05:50	87.5	↓-0.1
3/4 06:00	87.4	↓-0.1
3/4 06:10	87.3	↓-0.1
3/4 06:20	87.3	0	干潮
3/4 06:30	87.3	0
3/4 06:40	87.3	0
3/4 06:50	87.4	↑0.1
3/4 07:00	87.4	0
3/4 07:10	87.6	↑0.2
3/4 07:20	87.7	↑0.1
3/4 07:30	87.9	↑0.2
3/4 07:40	88.1	↑0.2
3/4 07:50	88.4	↑0.3
3/4 08:00	88.7	↑0.3
3/4 08:10	89.0	↑0.3
3/4 08:20	89.4	↑0.4
3/4 08:30	89.8	↑0.4
3/4 08:40	90.2	↑0.4
3/4 08:50	90.7	↑0.5
3/4 09:00	91.2	↑0.5
3/4 09:10	91.7	↑0.5
3/4 09:20	92.3	↑0.6
3/4 09:30	92.8	↑0.5
3/4 09:40	93.4	↑0.6
3/4 09:50	93.9	↑0.5
3/4 10:00	94.5	↑0.6
3/4 10:10	95.0	↑0.5
3/4 10:20	95.4	↑0.4
3/4 10:30	95.8	↑0.4
3/4 10:40	96.2	↑0.4
3/4 10:50	96.5	↑0.3
3/4 11:00	96.8	↑0.3
3/4 11:10	97.0	↑0.2
3/4 11:20	97.1	↑0.1
3/4 11:30	97.1	0	満潮
3/4 11:40	97.1	0
3/4 11:50	97.0	↓-0.1
3/4 12:00	96.8	↓-0.2
3/4 12:10	96.5	↓-0.3
3/4 12:20	96.1	↓-0.4
3/4 12:30	95.6	↓-0.5
3/4 12:40	95.0	↓-0.6
3/4 12:50	94.3	↓-0.7
3/4 13:00	93.6	↓-0.7
3/4 13:10	92.7	↓-0.9
3/4 13:20	91.7	↓-1.0
3/4 13:30	90.6	↓-1.1
3/4 13:40	89.4	↓-1.2
3/4 13:50	88.1	↓-1.3
3/4 14:00	86.6	↓-1.5
3/4 14:10	85.1	↓-1.5
3/4 14:20	83.4	↓-1.7
3/4 14:30	81.6	↓-1.8
3/4 14:40	79.7	↓-1.9
3/4 14:50	77.7	↓-2.0
3/4 15:00	75.6	↓-2.1
3/4 15:10	73.4	↓-2.2
3/4 15:20	71.2	↓-2.2
3/4 15:30	68.8	↓-2.4
3/4 15:40	66.4	↓-2.4
3/4 15:50	64.0	↓-2.4
3/4 16:00	61.5	↓-2.5	最大潮位差
3/4 16:10	59.0	↓-2.5	最大潮位差
3/4 16:20	56.6	↓-2.4
3/4 16:30	54.1	↓-2.5	最大潮位差
3/4 16:40	51.7	↓-2.4
3/4 16:50	49.3	↓-2.4
3/4 17:00	47.0	↓-2.3
3/4 17:10	44.8	↓-2.2
3/4 17:20	42.7	↓-2.1
3/4 17:30	40.7	↓-2.0
3/4 17:40	38.8	↓-1.9
3/4 17:50	37.0	↓-1.8
3/4 18:00	35.3	↓-1.7
3/4 18:10	33.8	↓-1.5
3/4 18:20	32.4	↓-1.4
3/4 18:30	31.2	↓-1.2
3/4 18:40	30.1	↓-1.1
3/4 18:50	29.2	↓-0.9
3/4 19:00	28.4	↓-0.8
3/4 19:10	27.8	↓-0.6
3/4 19:20	27.4	↓-0.4
3/4 19:30	27.1	↓-0.3	干潮
3/4 19:40	27.1	0	干潮
3/4 19:50	27.2	↑0.1
3/4 20:00	27.4	↑0.2
3/4 20:10	27.9	↑0.5
3/4 20:20	28.6	↑0.7
3/4 20:30	29.4	↑0.8
3/4 20:40	30.4	↑1.0
3/4 20:50	31.6	↑1.2
3/4 21:00	32.9	↑1.3
3/4 21:10	34.4	↑1.5
3/4 21:20	36.1	↑1.7
3/4 21:30	37.9	↑1.8
3/4 21:40	39.8	↑1.9
3/4 21:50	41.9	↑2.1
3/4 22:00	44.0	↑2.1
3/4 22:10	46.2	↑2.2
3/4 22:20	48.5	↑2.3
3/4 22:30	50.9	↑2.4
3/4 22:40	53.3	↑2.4
3/4 22:50	55.7	↑2.4
3/4 23:00	58.2	↑2.5	最大潮位差
3/4 23:10	60.6	↑2.4
3/4 23:20	63.1	↑2.5	最大潮位差
3/4 23:30	65.5	↑2.4
3/4 23:40	67.8	↑2.3
3/4 23:50	70.2	↑2.4