20 (月)	08:03	01:38	22:56	15:49
	116cm	67cm	79cm	36cm
小潮 出 06:21 入 17:24 出 10:43 入 00:20

日立（茨城）2040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	71.7	↓-0.9
2/20 00:10	70.8	↓-0.9
2/20 00:20	69.9	↓-0.9
2/20 00:30	69.2	↓-0.7
2/20 00:40	68.5	↓-0.7
2/20 00:50	67.9	↓-0.6
2/20 01:00	67.4	↓-0.5
2/20 01:10	67.1	↓-0.3
2/20 01:20	66.8	↓-0.3
2/20 01:30	66.7	↓-0.1	干潮
2/20 01:40	66.6	↓-0.1
2/20 01:50	66.7	↑0.1
2/20 02:00	67.0	↑0.3
2/20 02:10	67.3	↑0.3
2/20 02:20	67.9	↑0.6
2/20 02:30	68.5	↑0.6
2/20 02:40	69.3	↑0.8
2/20 02:50	70.2	↑0.9
2/20 03:00	71.3	↑1.1
2/20 03:10	72.5	↑1.2
2/20 03:20	73.8	↑1.3
2/20 03:30	75.2	↑1.4
2/20 03:40	76.8	↑1.6
2/20 03:50	78.5	↑1.7
2/20 04:00	80.2	↑1.7
2/20 04:10	82.1	↑1.9
2/20 04:20	84.0	↑1.9
2/20 04:30	86.0	↑2.0
2/20 04:40	88.0	↑2.0
2/20 04:50	90.0	↑2.0
2/20 05:00	92.1	↑2.1
2/20 05:10	94.1	↑2.0
2/20 05:20	96.1	↑2.0
2/20 05:30	98.1	↑2.0
2/20 05:40	100.1	↑2.0
2/20 05:50	101.9	↑1.8
2/20 06:00	103.7	↑1.8
2/20 06:10	105.4	↑1.7
2/20 06:20	107.0	↑1.6
2/20 06:30	108.5	↑1.5
2/20 06:40	109.9	↑1.4
2/20 06:50	111.1	↑1.2
2/20 07:00	112.2	↑1.1
2/20 07:10	113.2	↑1.0
2/20 07:20	114.0	↑0.8
2/20 07:30	114.6	↑0.6
2/20 07:40	115.1	↑0.5
2/20 07:50	115.4	↑0.3
2/20 08:00	115.5	↑0.1	満潮
2/20 08:10	115.4	↓-0.1
2/20 08:20	115.2	↓-0.2
2/20 08:30	114.8	↓-0.4
2/20 08:40	114.2	↓-0.6
2/20 08:50	113.4	↓-0.8
2/20 09:00	112.5	↓-0.9
2/20 09:10	111.3	↓-1.2
2/20 09:20	110.0	↓-1.3
2/20 09:30	108.6	↓-1.4
2/20 09:40	106.9	↓-1.7
2/20 09:50	105.1	↓-1.8
2/20 10:00	103.2	↓-1.9
2/20 10:10	101.2	↓-2.0
2/20 10:20	99.0	↓-2.2
2/20 10:30	96.7	↓-2.3
2/20 10:40	94.3	↓-2.4
2/20 10:50	91.9	↓-2.4
2/20 11:00	89.3	↓-2.6
2/20 11:10	86.8	↓-2.5
2/20 11:20	84.1	↓-2.7	最大潮位差
2/20 11:30	81.5	↓-2.6
2/20 11:40	78.8	↓-2.7	最大潮位差
2/20 11:50	76.1	↓-2.7	最大潮位差
2/20 12:00	73.4	↓-2.7	最大潮位差
2/20 12:10	70.8	↓-2.6
2/20 12:20	68.1	↓-2.7	最大潮位差
2/20 12:30	65.5	↓-2.6
2/20 12:40	63.0	↓-2.5
2/20 12:50	60.5	↓-2.5
2/20 13:00	58.1	↓-2.4
2/20 13:10	55.8	↓-2.3
2/20 13:20	53.5	↓-2.3
2/20 13:30	51.4	↓-2.1
2/20 13:40	49.3	↓-2.1
2/20 13:50	47.4	↓-1.9
2/20 14:00	45.6	↓-1.8
2/20 14:10	43.9	↓-1.7
2/20 14:20	42.4	↓-1.5
2/20 14:30	41.0	↓-1.4
2/20 14:40	39.8	↓-1.2
2/20 14:50	38.7	↓-1.1
2/20 15:00	37.8	↓-0.9
2/20 15:10	37.1	↓-0.7
2/20 15:20	36.5	↓-0.6
2/20 15:30	36.1	↓-0.4
2/20 15:40	35.9	↓-0.2	干潮
2/20 15:50	35.9	0
2/20 16:00	36.0	↑0.1
2/20 16:10	36.3	↑0.3
2/20 16:20	36.7	↑0.4
2/20 16:30	37.3	↑0.6
2/20 16:40	38.0	↑0.7
2/20 16:50	38.9	↑0.9
2/20 17:00	39.9	↑1.0
2/20 17:10	41.0	↑1.1
2/20 17:20	42.2	↑1.2
2/20 17:30	43.5	↑1.3
2/20 17:40	44.9	↑1.4
2/20 17:50	46.3	↑1.4
2/20 18:00	47.8	↑1.5
2/20 18:10	49.3	↑1.5
2/20 18:20	50.9	↑1.6
2/20 18:30	52.5	↑1.6
2/20 18:40	54.1	↑1.6
2/20 18:50	55.8	↑1.7
2/20 19:00	57.4	↑1.6
2/20 19:10	59.0	↑1.6
2/20 19:20	60.6	↑1.6
2/20 19:30	62.1	↑1.5
2/20 19:40	63.7	↑1.6
2/20 19:50	65.1	↑1.4
2/20 20:00	66.6	↑1.5
2/20 20:10	67.9	↑1.3
2/20 20:20	69.2	↑1.3
2/20 20:30	70.4	↑1.2
2/20 20:40	71.6	↑1.2
2/20 20:50	72.6	↑1.0
2/20 21:00	73.6	↑1.0
2/20 21:10	74.5	↑0.9
2/20 21:20	75.3	↑0.8
2/20 21:30	76.0	↑0.7
2/20 21:40	76.6	↑0.6
2/20 21:50	77.1	↑0.5
2/20 22:00	77.6	↑0.5
2/20 22:10	77.9	↑0.3
2/20 22:20	78.2	↑0.3
2/20 22:30	78.4	↑0.2
2/20 22:40	78.5	↑0.1
2/20 22:50	78.5	0	満潮
2/20 23:00	78.5	0
2/20 23:10	78.5	0
2/20 23:20	78.4	↓-0.1
2/20 23:30	78.3	↓-0.1
2/20 23:40	78.1	↓-0.2
2/20 23:50	78.0	↓-0.1