20 (金)	06:50	16:36	-	-
	101cm	35cm	-	-
長潮 出 04:58 入 18:17 出 11:12 入 01:19

日立（茨城）2040年04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
4/20 00:00	92.8	↑0.2
4/20 00:10	92.9	↑0.1
4/20 00:20	93.1	↑0.2
4/20 00:30	93.2	↑0.1
4/20 00:40	93.3	↑0.1
4/20 00:50	93.4	↑0.1
4/20 01:00	93.4	0
4/20 01:10	93.5	↑0.1
4/20 01:20	93.5	0
4/20 01:30	93.6	↑0.1
4/20 01:40	93.6	0
4/20 01:50	93.7	↑0.1
4/20 02:00	93.7	0
4/20 02:10	93.8	↑0.1
4/20 02:20	93.8	0
4/20 02:30	93.9	↑0.1
4/20 02:40	94.0	↑0.1
4/20 02:50	94.1	↑0.1
4/20 03:00	94.2	↑0.1
4/20 03:10	94.4	↑0.2
4/20 03:20	94.6	↑0.2
4/20 03:30	94.8	↑0.2
4/20 03:40	95.0	↑0.2
4/20 03:50	95.3	↑0.3
4/20 04:00	95.6	↑0.3
4/20 04:10	95.9	↑0.3
4/20 04:20	96.3	↑0.4
4/20 04:30	96.7	↑0.4
4/20 04:40	97.0	↑0.3
4/20 04:50	97.4	↑0.4
4/20 05:00	97.8	↑0.4
4/20 05:10	98.2	↑0.4
4/20 05:20	98.6	↑0.4
4/20 05:30	98.9	↑0.3
4/20 05:40	99.3	↑0.4
4/20 05:50	99.6	↑0.3
4/20 06:00	99.8	↑0.2
4/20 06:10	100.0	↑0.2
4/20 06:20	100.2	↑0.2
4/20 06:30	100.4	↑0.2
4/20 06:40	100.4	0	満潮
4/20 06:50	100.5	↑0.1	満潮
4/20 07:00	100.4	↓-0.1
4/20 07:10	100.3	↓-0.1
4/20 07:20	100.2	↓-0.1
4/20 07:30	100.0	↓-0.2
4/20 07:40	99.7	↓-0.3
4/20 07:50	99.3	↓-0.4
4/20 08:00	98.9	↓-0.4
4/20 08:10	98.4	↓-0.5
4/20 08:20	97.9	↓-0.5
4/20 08:30	97.3	↓-0.6
4/20 08:40	96.6	↓-0.7
4/20 08:50	95.8	↓-0.8
4/20 09:00	94.9	↓-0.9
4/20 09:10	94.0	↓-0.9
4/20 09:20	93.0	↓-1.0
4/20 09:30	91.9	↓-1.1
4/20 09:40	90.8	↓-1.1
4/20 09:50	89.5	↓-1.3
4/20 10:00	88.3	↓-1.2
4/20 10:10	86.9	↓-1.4
4/20 10:20	85.5	↓-1.4
4/20 10:30	84.0	↓-1.5
4/20 10:40	82.4	↓-1.6
4/20 10:50	80.9	↓-1.5
4/20 11:00	79.2	↓-1.7
4/20 11:10	77.6	↓-1.6
4/20 11:20	75.9	↓-1.7
4/20 11:30	74.2	↓-1.7
4/20 11:40	72.4	↓-1.8
4/20 11:50	70.7	↓-1.7
4/20 12:00	68.9	↓-1.8
4/20 12:10	67.1	↓-1.8
4/20 12:20	65.4	↓-1.7
4/20 12:30	63.6	↓-1.8
4/20 12:40	61.8	↓-1.8
4/20 12:50	60.1	↓-1.7
4/20 13:00	58.3	↓-1.8
4/20 13:10	56.6	↓-1.7
4/20 13:20	54.9	↓-1.7
4/20 13:30	53.3	↓-1.6
4/20 13:40	51.6	↓-1.7
4/20 13:50	50.0	↓-1.6
4/20 14:00	48.4	↓-1.6
4/20 14:10	46.9	↓-1.5
4/20 14:20	45.4	↓-1.5
4/20 14:30	44.0	↓-1.4
4/20 14:40	42.7	↓-1.3
4/20 14:50	41.4	↓-1.3
4/20 15:00	40.2	↓-1.2
4/20 15:10	39.2	↓-1.0
4/20 15:20	38.2	↓-1.0
4/20 15:30	37.3	↓-0.9
4/20 15:40	36.5	↓-0.8
4/20 15:50	35.9	↓-0.6
4/20 16:00	35.3	↓-0.6
4/20 16:10	35.0	↓-0.3
4/20 16:20	34.7	↓-0.3
4/20 16:30	34.6	↓-0.1	干潮
4/20 16:40	34.6	0
4/20 16:50	34.7	↑0.1
4/20 17:00	35.0	↑0.3
4/20 17:10	35.4	↑0.4
4/20 17:20	35.9	↑0.5
4/20 17:30	36.5	↑0.6
4/20 17:40	37.3	↑0.8
4/20 17:50	38.1	↑0.8
4/20 18:00	39.1	↑1.0
4/20 18:10	40.2	↑1.1
4/20 18:20	41.4	↑1.2
4/20 18:30	42.7	↑1.3
4/20 18:40	44.0	↑1.3
4/20 18:50	45.5	↑1.5
4/20 19:00	47.0	↑1.5
4/20 19:10	48.6	↑1.6
4/20 19:20	50.2	↑1.6
4/20 19:30	52.0	↑1.8
4/20 19:40	53.7	↑1.7
4/20 19:50	55.6	↑1.9
4/20 20:00	57.4	↑1.8
4/20 20:10	59.3	↑1.9
4/20 20:20	61.2	↑1.9
4/20 20:30	63.2	↑2.0	最大潮位差
4/20 20:40	65.1	↑1.9
4/20 20:50	67.0	↑1.9
4/20 21:00	69.0	↑2.0	最大潮位差
4/20 21:10	70.9	↑1.9
4/20 21:20	72.7	↑1.8
4/20 21:30	74.6	↑1.9
4/20 21:40	76.4	↑1.8
4/20 21:50	78.1	↑1.7
4/20 22:00	79.8	↑1.7
4/20 22:10	81.4	↑1.6
4/20 22:20	83.0	↑1.6
4/20 22:30	84.4	↑1.4
4/20 22:40	85.8	↑1.4
4/20 22:50	87.2	↑1.4
4/20 23:00	88.4	↑1.2
4/20 23:10	89.6	↑1.2
4/20 23:20	90.7	↑1.1
4/20 23:30	91.7	↑1.0
4/20 23:40	92.7	↑1.0
4/20 23:50	93.6	↑0.9