20 (火)	06:57	00:46	20:20	14:02
	121cm	57cm	90cm	34cm
小潮 出 06:20 入 17:25 出 09:16 入 23:52

日立（茨城）2029年02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
2/20 00:00	58.7	↓-0.9
2/20 00:10	57.9	↓-0.8
2/20 00:20	57.3	↓-0.6
2/20 00:30	56.9	↓-0.4
2/20 00:40	56.8	↓-0.1	干潮
2/20 00:50	56.8	0
2/20 01:00	57.0	↑0.2
2/20 01:10	57.4	↑0.4
2/20 01:20	58.0	↑0.6
2/20 01:30	58.8	↑0.8
2/20 01:40	59.8	↑1.0
2/20 01:50	61.0	↑1.2
2/20 02:00	62.3	↑1.3
2/20 02:10	63.9	↑1.6
2/20 02:20	65.6	↑1.7
2/20 02:30	67.5	↑1.9
2/20 02:40	69.6	↑2.1
2/20 02:50	71.8	↑2.2
2/20 03:00	74.1	↑2.3
2/20 03:10	76.6	↑2.5
2/20 03:20	79.1	↑2.5
2/20 03:30	81.7	↑2.6
2/20 03:40	84.4	↑2.7
2/20 03:50	87.2	↑2.8
2/20 04:00	89.9	↑2.7
2/20 04:10	92.6	↑2.7
2/20 04:20	95.4	↑2.8
2/20 04:30	98.0	↑2.6
2/20 04:40	100.6	↑2.6
2/20 04:50	103.2	↑2.6
2/20 05:00	105.6	↑2.4
2/20 05:10	107.8	↑2.2
2/20 05:20	110.0	↑2.2
2/20 05:30	111.9	↑1.9
2/20 05:40	113.7	↑1.8
2/20 05:50	115.3	↑1.6
2/20 06:00	116.7	↑1.4
2/20 06:10	117.9	↑1.2
2/20 06:20	118.8	↑0.9
2/20 06:30	119.6	↑0.8
2/20 06:40	120.1	↑0.5
2/20 06:50	120.3	↑0.2	満潮
2/20 07:00	120.4	↑0.1
2/20 07:10	120.1	↓-0.3
2/20 07:20	119.7	↓-0.4
2/20 07:30	119.0	↓-0.7
2/20 07:40	118.1	↓-0.9
2/20 07:50	116.9	↓-1.2
2/20 08:00	115.5	↓-1.4
2/20 08:10	113.9	↓-1.6
2/20 08:20	112.1	↓-1.8
2/20 08:30	110.1	↓-2.0
2/20 08:40	107.9	↓-2.2
2/20 08:50	105.5	↓-2.4
2/20 09:00	102.9	↓-2.6
2/20 09:10	100.2	↓-2.7
2/20 09:20	97.3	↓-2.9
2/20 09:30	94.3	↓-3.0
2/20 09:40	91.3	↓-3.0
2/20 09:50	88.1	↓-3.2
2/20 10:00	84.9	↓-3.2
2/20 10:10	81.6	↓-3.3	最大潮位差
2/20 10:20	78.3	↓-3.3	最大潮位差
2/20 10:30	75.0	↓-3.3	最大潮位差
2/20 10:40	71.7	↓-3.3	最大潮位差
2/20 10:50	68.5	↓-3.2
2/20 11:00	65.3	↓-3.2
2/20 11:10	62.2	↓-3.1
2/20 11:20	59.2	↓-3.0
2/20 11:30	56.3	↓-2.9
2/20 11:40	53.5	↓-2.8
2/20 11:50	50.8	↓-2.7
2/20 12:00	48.3	↓-2.5
2/20 12:10	46.0	↓-2.3
2/20 12:20	43.8	↓-2.2
2/20 12:30	41.8	↓-2.0
2/20 12:40	40.0	↓-1.8
2/20 12:50	38.4	↓-1.6
2/20 13:00	37.0	↓-1.4
2/20 13:10	35.8	↓-1.2
2/20 13:20	34.9	↓-0.9
2/20 13:30	34.1	↓-0.8
2/20 13:40	33.5	↓-0.6
2/20 13:50	33.2	↓-0.3
2/20 14:00	33.1	↓-0.1	干潮
2/20 14:10	33.2	↑0.1
2/20 14:20	33.5	↑0.3
2/20 14:30	34.0	↑0.5
2/20 14:40	34.7	↑0.7
2/20 14:50	35.7	↑1.0
2/20 15:00	36.8	↑1.1
2/20 15:10	38.1	↑1.3
2/20 15:20	39.6	↑1.5
2/20 15:30	41.3	↑1.7
2/20 15:40	43.1	↑1.8
2/20 15:50	45.0	↑1.9
2/20 16:00	47.1	↑2.1
2/20 16:10	49.2	↑2.1
2/20 16:20	51.4	↑2.2
2/20 16:30	53.7	↑2.3
2/20 16:40	56.1	↑2.4
2/20 16:50	58.5	↑2.4
2/20 17:00	60.8	↑2.3
2/20 17:10	63.2	↑2.4
2/20 17:20	65.5	↑2.3
2/20 17:30	67.8	↑2.3
2/20 17:40	70.1	↑2.3
2/20 17:50	72.2	↑2.1
2/20 18:00	74.3	↑2.1
2/20 18:10	76.3	↑2.0
2/20 18:20	78.1	↑1.8
2/20 18:30	79.8	↑1.7
2/20 18:40	81.4	↑1.6
2/20 18:50	82.9	↑1.5
2/20 19:00	84.2	↑1.3
2/20 19:10	85.3	↑1.1
2/20 19:20	86.3	↑1.0
2/20 19:30	87.2	↑0.9
2/20 19:40	87.9	↑0.7
2/20 19:50	88.4	↑0.5
2/20 20:00	88.8	↑0.4
2/20 20:10	89.0	↑0.2	満潮
2/20 20:20	89.1	↑0.1	満潮
2/20 20:30	89.0	↓-0.1
2/20 20:40	88.7	↓-0.3
2/20 20:50	88.3	↓-0.4
2/20 21:00	87.8	↓-0.5
2/20 21:10	87.1	↓-0.7
2/20 21:20	86.4	↓-0.7
2/20 21:30	85.5	↓-0.9
2/20 21:40	84.5	↓-1.0
2/20 21:50	83.5	↓-1.0
2/20 22:00	82.4	↓-1.1
2/20 22:10	81.2	↓-1.2
2/20 22:20	80.0	↓-1.2
2/20 22:30	78.8	↓-1.2
2/20 22:40	77.5	↓-1.3
2/20 22:50	76.3	↓-1.2
2/20 23:00	75.1	↓-1.2
2/20 23:10	73.9	↓-1.2
2/20 23:20	72.8	↓-1.1
2/20 23:30	71.8	↓-1.0
2/20 23:40	70.8	↓-1.0
2/20 23:50	69.9	↓-0.9