20 (水)	10:55	04:00	-	18:00
	121cm	64cm	-	58cm
長潮 出 06:45 入 16:27 出 12:36 入 00:26

日立（茨城）2034年12月20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
12/20 00:00	88.8	↓-1.2
12/20 00:10	87.5	↓-1.3
12/20 00:20	86.2	↓-1.3
12/20 00:30	84.9	↓-1.3
12/20 00:40	83.5	↓-1.4
12/20 00:50	82.1	↓-1.4
12/20 01:00	80.7	↓-1.4
12/20 01:10	79.3	↓-1.4
12/20 01:20	77.9	↓-1.4
12/20 01:30	76.5	↓-1.4
12/20 01:40	75.1	↓-1.4
12/20 01:50	73.7	↓-1.4
12/20 02:00	72.4	↓-1.3
12/20 02:10	71.2	↓-1.2
12/20 02:20	69.9	↓-1.3
12/20 02:30	68.8	↓-1.1
12/20 02:40	67.7	↓-1.1
12/20 02:50	66.8	↓-0.9
12/20 03:00	65.9	↓-0.9
12/20 03:10	65.2	↓-0.7
12/20 03:20	64.5	↓-0.7
12/20 03:30	64.0	↓-0.5
12/20 03:40	63.7	↓-0.3
12/20 03:50	63.4	↓-0.3	干潮
12/20 04:00	63.4	0	干潮
12/20 04:10	63.5	↑0.1
12/20 04:20	63.7	↑0.2
12/20 04:30	64.1	↑0.4
12/20 04:40	64.7	↑0.6
12/20 04:50	65.4	↑0.7
12/20 05:00	66.3	↑0.9
12/20 05:10	67.3	↑1.0
12/20 05:20	68.4	↑1.1
12/20 05:30	69.7	↑1.3
12/20 05:40	71.2	↑1.5
12/20 05:50	72.7	↑1.5
12/20 06:00	74.3	↑1.6
12/20 06:10	76.1	↑1.8
12/20 06:20	77.9	↑1.8
12/20 06:30	79.8	↑1.9
12/20 06:40	81.7	↑1.9
12/20 06:50	83.7	↑2.0
12/20 07:00	85.8	↑2.1
12/20 07:10	87.9	↑2.1
12/20 07:20	90.0	↑2.1
12/20 07:30	92.1	↑2.1
12/20 07:40	94.3	↑2.2
12/20 07:50	96.4	↑2.1
12/20 08:00	98.5	↑2.1
12/20 08:10	100.6	↑2.1
12/20 08:20	102.6	↑2.0
12/20 08:30	104.6	↑2.0
12/20 08:40	106.5	↑1.9
12/20 08:50	108.4	↑1.9
12/20 09:00	110.1	↑1.7
12/20 09:10	111.8	↑1.7
12/20 09:20	113.3	↑1.5
12/20 09:30	114.8	↑1.5
12/20 09:40	116.1	↑1.3
12/20 09:50	117.2	↑1.1
12/20 10:00	118.2	↑1.0
12/20 10:10	119.0	↑0.8
12/20 10:20	119.7	↑0.7
12/20 10:30	120.2	↑0.5
12/20 10:40	120.5	↑0.3
12/20 10:50	120.7	↑0.2	満潮
12/20 11:00	120.7	0
12/20 11:10	120.5	↓-0.2
12/20 11:20	120.2	↓-0.3
12/20 11:30	119.7	↓-0.5
12/20 11:40	119.0	↓-0.7
12/20 11:50	118.2	↓-0.8
12/20 12:00	117.2	↓-1.0
12/20 12:10	116.1	↓-1.1
12/20 12:20	114.8	↓-1.3
12/20 12:30	113.5	↓-1.3
12/20 12:40	111.9	↓-1.6
12/20 12:50	110.3	↓-1.6
12/20 13:00	108.6	↓-1.7
12/20 13:10	106.7	↓-1.9
12/20 13:20	104.8	↓-1.9
12/20 13:30	102.8	↓-2.0
12/20 13:40	100.6	↓-2.2
12/20 13:50	98.5	↓-2.1
12/20 14:00	96.2	↓-2.3
12/20 14:10	93.9	↓-2.3
12/20 14:20	91.5	↓-2.4	最大潮位差
12/20 14:30	89.2	↓-2.3
12/20 14:40	86.8	↓-2.4	最大潮位差
12/20 14:50	84.4	↓-2.4	最大潮位差
12/20 15:00	82.0	↓-2.4	最大潮位差
12/20 15:10	79.6	↓-2.4	最大潮位差
12/20 15:20	77.3	↓-2.3
12/20 15:30	75.1	↓-2.2
12/20 15:40	72.9	↓-2.2
12/20 15:50	70.8	↓-2.1
12/20 16:00	68.9	↓-1.9
12/20 16:10	67.0	↓-1.9
12/20 16:20	65.3	↓-1.7
12/20 16:30	63.7	↓-1.6
12/20 16:40	62.3	↓-1.4
12/20 16:50	61.1	↓-1.2
12/20 17:00	60.0	↓-1.1
12/20 17:10	59.0	↓-1.0
12/20 17:20	58.3	↓-0.7
12/20 17:30	57.7	↓-0.6
12/20 17:40	57.3	↓-0.4
12/20 17:50	57.1	↓-0.2	干潮
12/20 18:00	57.0	↓-0.1	干潮
12/20 18:10	57.1	↑0.1
12/20 18:20	57.3	↑0.2
12/20 18:30	57.8	↑0.5
12/20 18:40	58.3	↑0.5
12/20 18:50	59.0	↑0.7
12/20 19:00	59.8	↑0.8
12/20 19:10	60.8	↑1.0
12/20 19:20	61.9	↑1.1
12/20 19:30	63.1	↑1.2
12/20 19:40	64.4	↑1.3
12/20 19:50	65.8	↑1.4
12/20 20:00	67.2	↑1.4
12/20 20:10	68.8	↑1.6
12/20 20:20	70.4	↑1.6
12/20 20:30	72.1	↑1.7
12/20 20:40	73.8	↑1.7
12/20 20:50	75.6	↑1.8
12/20 21:00	77.4	↑1.8
12/20 21:10	79.1	↑1.7
12/20 21:20	80.9	↑1.8
12/20 21:30	82.6	↑1.7
12/20 21:40	84.3	↑1.7
12/20 21:50	85.9	↑1.6
12/20 22:00	87.5	↑1.6
12/20 22:10	88.9	↑1.4
12/20 22:20	90.3	↑1.4
12/20 22:30	91.6	↑1.3
12/20 22:40	92.7	↑1.1
12/20 22:50	93.8	↑1.1
12/20 23:00	94.7	↑0.9
12/20 23:10	95.5	↑0.8
12/20 23:20	96.1	↑0.6
12/20 23:30	96.7	↑0.6
12/20 23:40	97.1	↑0.4
12/20 23:50	97.3	↑0.2