22 (月)	09:53	03:03	23:19	17:04
	123cm	63cm	92cm	54cm
小潮 出 06:46 入 16:28 出 12:01 入 00:17

日立（茨城）2031年12月22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
12/22 00:00	81.0	↓-1.6
12/22 00:10	79.5	↓-1.5
12/22 00:20	77.9	↓-1.6
12/22 00:30	76.4	↓-1.5
12/22 00:40	74.9	↓-1.5
12/22 00:50	73.5	↓-1.4
12/22 01:00	72.0	↓-1.5
12/22 01:10	70.7	↓-1.3
12/22 01:20	69.4	↓-1.3
12/22 01:30	68.2	↓-1.2
12/22 01:40	67.0	↓-1.2
12/22 01:50	66.0	↓-1.0
12/22 02:00	65.1	↓-0.9
12/22 02:10	64.2	↓-0.9
12/22 02:20	63.5	↓-0.7
12/22 02:30	63.0	↓-0.5
12/22 02:40	62.6	↓-0.4
12/22 02:50	62.3	↓-0.3
12/22 03:00	62.2	↓-0.1	干潮
12/22 03:10	62.2	0
12/22 03:20	62.4	↑0.2
12/22 03:30	62.8	↑0.4
12/22 03:40	63.3	↑0.5
12/22 03:50	64.1	↑0.8
12/22 04:00	64.9	↑0.8
12/22 04:10	66.0	↑1.1
12/22 04:20	67.2	↑1.2
12/22 04:30	68.5	↑1.3
12/22 04:40	70.0	↑1.5
12/22 04:50	71.6	↑1.6
12/22 05:00	73.4	↑1.8
12/22 05:10	75.2	↑1.8
12/22 05:20	77.2	↑2.0
12/22 05:30	79.2	↑2.0
12/22 05:40	81.3	↑2.1
12/22 05:50	83.5	↑2.2
12/22 06:00	85.7	↑2.2
12/22 06:10	87.9	↑2.2
12/22 06:20	90.2	↑2.3
12/22 06:30	92.5	↑2.3
12/22 06:40	94.7	↑2.2
12/22 06:50	97.0	↑2.3
12/22 07:00	99.3	↑2.3
12/22 07:10	101.4	↑2.1
12/22 07:20	103.6	↑2.2
12/22 07:30	105.7	↑2.1
12/22 07:40	107.7	↑2.0
12/22 07:50	109.6	↑1.9
12/22 08:00	111.4	↑1.8
12/22 08:10	113.2	↑1.8
12/22 08:20	114.7	↑1.5
12/22 08:30	116.2	↑1.5
12/22 08:40	117.5	↑1.3
12/22 08:50	118.7	↑1.2
12/22 09:00	119.7	↑1.0
12/22 09:10	120.6	↑0.9
12/22 09:20	121.2	↑0.6
12/22 09:30	121.7	↑0.5
12/22 09:40	122.1	↑0.4
12/22 09:50	122.2	↑0.1	満潮
12/22 10:00	122.1	↓-0.1
12/22 10:10	121.9	↓-0.2
12/22 10:20	121.5	↓-0.4
12/22 10:30	120.9	↓-0.6
12/22 10:40	120.1	↓-0.8
12/22 10:50	119.2	↓-0.9
12/22 11:00	118.1	↓-1.1
12/22 11:10	116.8	↓-1.3
12/22 11:20	115.4	↓-1.4
12/22 11:30	113.8	↓-1.6
12/22 11:40	112.1	↓-1.7
12/22 11:50	110.3	↓-1.8
12/22 12:00	108.4	↓-1.9
12/22 12:10	106.4	↓-2.0
12/22 12:20	104.3	↓-2.1
12/22 12:30	102.0	↓-2.3
12/22 12:40	99.8	↓-2.2
12/22 12:50	97.4	↓-2.4
12/22 13:00	95.0	↓-2.4
12/22 13:10	92.5	↓-2.5	最大潮位差
12/22 13:20	90.1	↓-2.4
12/22 13:30	87.6	↓-2.5	最大潮位差
12/22 13:40	85.1	↓-2.5	最大潮位差
12/22 13:50	82.6	↓-2.5	最大潮位差
12/22 14:00	80.1	↓-2.5	最大潮位差
12/22 14:10	77.7	↓-2.4
12/22 14:20	75.3	↓-2.4
12/22 14:30	72.9	↓-2.4
12/22 14:40	70.7	↓-2.2
12/22 14:50	68.5	↓-2.2
12/22 15:00	66.5	↓-2.0
12/22 15:10	64.6	↓-1.9
12/22 15:20	62.8	↓-1.8
12/22 15:30	61.1	↓-1.7
12/22 15:40	59.7	↓-1.4
12/22 15:50	58.3	↓-1.4
12/22 16:00	57.2	↓-1.1
12/22 16:10	56.2	↓-1.0
12/22 16:20	55.3	↓-0.9
12/22 16:30	54.7	↓-0.6
12/22 16:40	54.2	↓-0.5
12/22 16:50	53.9	↓-0.3
12/22 17:00	53.8	↓-0.1	干潮
12/22 17:10	53.8	0
12/22 17:20	54.0	↑0.2
12/22 17:30	54.4	↑0.4
12/22 17:40	54.9	↑0.5
12/22 17:50	55.5	↑0.6
12/22 18:00	56.3	↑0.8
12/22 18:10	57.2	↑0.9
12/22 18:20	58.2	↑1.0
12/22 18:30	59.3	↑1.1
12/22 18:40	60.5	↑1.2
12/22 18:50	61.8	↑1.3
12/22 19:00	63.2	↑1.4
12/22 19:10	64.6	↑1.4
12/22 19:20	66.1	↑1.5
12/22 19:30	67.6	↑1.5
12/22 19:40	69.2	↑1.6
12/22 19:50	70.8	↑1.6
12/22 20:00	72.4	↑1.6
12/22 20:10	74.0	↑1.6
12/22 20:20	75.6	↑1.6
12/22 20:30	77.1	↑1.5
12/22 20:40	78.6	↑1.5
12/22 20:50	80.1	↑1.5
12/22 21:00	81.5	↑1.4
12/22 21:10	82.9	↑1.4
12/22 21:20	84.2	↑1.3
12/22 21:30	85.3	↑1.1
12/22 21:40	86.4	↑1.1
12/22 21:50	87.4	↑1.0
12/22 22:00	88.3	↑0.9
12/22 22:10	89.1	↑0.8
12/22 22:20	89.8	↑0.7
12/22 22:30	90.3	↑0.5
12/22 22:40	90.8	↑0.5
12/22 22:50	91.1	↑0.3
12/22 23:00	91.3	↑0.2
12/22 23:10	91.5	↑0.2	満潮
12/22 23:20	91.5	0
12/22 23:30	91.4	↓-0.1
12/22 23:40	91.3	↓-0.1
12/22 23:50	91.0	↓-0.3