01 (土)	00:31	01:13	09:16	18:04
	79cm	79cm	114cm	37cm
長潮 出 06:40 入 17:04 出 11:49 入 01:33

日立（茨城）2031年02月01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
2/1 00:00	78.4	↑0.1
2/1 00:10	78.4	0
2/1 00:20	78.4	0
2/1 00:30	78.4	0	満潮
2/1 00:40	78.4	0
2/1 00:50	78.4	0
2/1 01:00	78.4	0
2/1 01:10	78.4	0	干潮
2/1 01:20	78.4	0
2/1 01:30	78.4	0
2/1 01:40	78.4	0
2/1 01:50	78.5	↑0.1
2/1 02:00	78.6	↑0.1
2/1 02:10	78.7	↑0.1
2/1 02:20	78.8	↑0.1
2/1 02:30	79.0	↑0.2
2/1 02:40	79.3	↑0.3
2/1 02:50	79.6	↑0.3
2/1 03:00	79.9	↑0.3
2/1 03:10	80.4	↑0.5
2/1 03:20	80.8	↑0.4
2/1 03:30	81.4	↑0.6
2/1 03:40	82.0	↑0.6
2/1 03:50	82.8	↑0.8
2/1 04:00	83.6	↑0.8
2/1 04:10	84.4	↑0.8
2/1 04:20	85.4	↑1.0
2/1 04:30	86.4	↑1.0
2/1 04:40	87.4	↑1.0
2/1 04:50	88.6	↑1.2
2/1 05:00	89.7	↑1.1
2/1 05:10	91.0	↑1.3
2/1 05:20	92.2	↑1.2
2/1 05:30	93.5	↑1.3
2/1 05:40	94.8	↑1.3
2/1 05:50	96.1	↑1.3
2/1 06:00	97.5	↑1.4
2/1 06:10	98.8	↑1.3
2/1 06:20	100.1	↑1.3
2/1 06:30	101.4	↑1.3
2/1 06:40	102.6	↑1.2
2/1 06:50	103.8	↑1.2
2/1 07:00	105.0	↑1.2
2/1 07:10	106.1	↑1.1
2/1 07:20	107.2	↑1.1
2/1 07:30	108.2	↑1.0
2/1 07:40	109.2	↑1.0
2/1 07:50	110.1	↑0.9
2/1 08:00	110.9	↑0.8
2/1 08:10	111.6	↑0.7
2/1 08:20	112.3	↑0.7
2/1 08:30	112.8	↑0.5
2/1 08:40	113.2	↑0.4
2/1 08:50	113.6	↑0.4
2/1 09:00	113.8	↑0.2
2/1 09:10	114.0	↑0.2	満潮
2/1 09:20	114.0	0
2/1 09:30	113.8	↓-0.2
2/1 09:40	113.6	↓-0.2
2/1 09:50	113.2	↓-0.4
2/1 10:00	112.7	↓-0.5
2/1 10:10	112.1	↓-0.6
2/1 10:20	111.4	↓-0.7
2/1 10:30	110.5	↓-0.9
2/1 10:40	109.5	↓-1.0
2/1 10:50	108.4	↓-1.1
2/1 11:00	107.2	↓-1.2
2/1 11:10	105.8	↓-1.4
2/1 11:20	104.4	↓-1.4
2/1 11:30	102.9	↓-1.5
2/1 11:40	101.2	↓-1.7
2/1 11:50	99.5	↓-1.7
2/1 12:00	97.8	↓-1.7
2/1 12:10	95.9	↓-1.9
2/1 12:20	94.0	↓-1.9
2/1 12:30	92.0	↓-2.0
2/1 12:40	89.9	↓-2.1
2/1 12:50	87.8	↓-2.1
2/1 13:00	85.7	↓-2.1
2/1 13:10	83.5	↓-2.2
2/1 13:20	81.2	↓-2.3
2/1 13:30	79.0	↓-2.2
2/1 13:40	76.7	↓-2.3
2/1 13:50	74.4	↓-2.3
2/1 14:00	72.0	↓-2.4	最大潮位差
2/1 14:10	69.7	↓-2.3
2/1 14:20	67.4	↓-2.3
2/1 14:30	65.1	↓-2.3
2/1 14:40	62.8	↓-2.3
2/1 14:50	60.5	↓-2.3
2/1 15:00	58.3	↓-2.2
2/1 15:10	56.1	↓-2.2
2/1 15:20	54.1	↓-2.0
2/1 15:30	52.1	↓-2.0
2/1 15:40	50.1	↓-2.0
2/1 15:50	48.3	↓-1.8
2/1 16:00	46.6	↓-1.7
2/1 16:10	45.0	↓-1.6
2/1 16:20	43.6	↓-1.4
2/1 16:30	42.2	↓-1.4
2/1 16:40	41.0	↓-1.2
2/1 16:50	40.0	↓-1.0
2/1 17:00	39.1	↓-0.9
2/1 17:10	38.3	↓-0.8
2/1 17:20	37.6	↓-0.7
2/1 17:30	37.1	↓-0.5
2/1 17:40	36.8	↓-0.3
2/1 17:50	36.5	↓-0.3
2/1 18:00	36.4	↓-0.1	干潮
2/1 18:10	36.5	↑0.1
2/1 18:20	36.6	↑0.1
2/1 18:30	36.9	↑0.3
2/1 18:40	37.3	↑0.4
2/1 18:50	37.8	↑0.5
2/1 19:00	38.5	↑0.7
2/1 19:10	39.2	↑0.7
2/1 19:20	40.0	↑0.8
2/1 19:30	41.0	↑1.0
2/1 19:40	42.0	↑1.0
2/1 19:50	43.1	↑1.1
2/1 20:00	44.4	↑1.3
2/1 20:10	45.6	↑1.2
2/1 20:20	47.0	↑1.4
2/1 20:30	48.4	↑1.4
2/1 20:40	49.9	↑1.5
2/1 20:50	51.4	↑1.5
2/1 21:00	53.0	↑1.6
2/1 21:10	54.5	↑1.5
2/1 21:20	56.1	↑1.6
2/1 21:30	57.7	↑1.6
2/1 21:40	59.3	↑1.6
2/1 21:50	60.9	↑1.6
2/1 22:00	62.5	↑1.6
2/1 22:10	64.0	↑1.5
2/1 22:20	65.5	↑1.5
2/1 22:30	66.9	↑1.4
2/1 22:40	68.3	↑1.4
2/1 22:50	69.7	↑1.4
2/1 23:00	71.0	↑1.3
2/1 23:10	72.3	↑1.3
2/1 23:20	73.5	↑1.2
2/1 23:30	74.7	↑1.2
2/1 23:40	75.8	↑1.1
2/1 23:50	76.8	↑1.0