20 (月)	07:58	01:32	23:14	15:52
	121cm	75cm	85cm	43cm
小潮 出 06:21 入 17:24 出 10:43 入 00:20

大洗（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	78.6	↓-0.8
2/20 00:10	77.9	↓-0.7
2/20 00:20	77.2	↓-0.7
2/20 00:30	76.6	↓-0.6
2/20 00:40	76.0	↓-0.6
2/20 00:50	75.6	↓-0.4
2/20 01:00	75.2	↓-0.4
2/20 01:10	74.9	↓-0.3
2/20 01:20	74.7	↓-0.2
2/20 01:30	74.7	0	干潮
2/20 01:40	74.7	0
2/20 01:50	74.9	↑0.2
2/20 02:00	75.1	↑0.2
2/20 02:10	75.5	↑0.4
2/20 02:20	76.1	↑0.6
2/20 02:30	76.7	↑0.6
2/20 02:40	77.5	↑0.8
2/20 02:50	78.3	↑0.8
2/20 03:00	79.4	↑1.1
2/20 03:10	80.5	↑1.1
2/20 03:20	81.7	↑1.2
2/20 03:30	83.1	↑1.4
2/20 03:40	84.6	↑1.5
2/20 03:50	86.2	↑1.6
2/20 04:00	87.8	↑1.6
2/20 04:10	89.6	↑1.8
2/20 04:20	91.4	↑1.8
2/20 04:30	93.2	↑1.8
2/20 04:40	95.2	↑2.0
2/20 04:50	97.1	↑1.9
2/20 05:00	99.0	↑1.9
2/20 05:10	101.0	↑2.0
2/20 05:20	102.9	↑1.9
2/20 05:30	104.8	↑1.9
2/20 05:40	106.6	↑1.8
2/20 05:50	108.4	↑1.8
2/20 06:00	110.1	↑1.7
2/20 06:10	111.7	↑1.6
2/20 06:20	113.2	↑1.5
2/20 06:30	114.6	↑1.4
2/20 06:40	115.9	↑1.3
2/20 06:50	117.0	↑1.1
2/20 07:00	118.0	↑1.0
2/20 07:10	118.9	↑0.9
2/20 07:20	119.6	↑0.7
2/20 07:30	120.1	↑0.5
2/20 07:40	120.5	↑0.4
2/20 07:50	120.7	↑0.2	満潮
2/20 08:00	120.7	0
2/20 08:10	120.6	↓-0.1
2/20 08:20	120.3	↓-0.3
2/20 08:30	119.8	↓-0.5
2/20 08:40	119.1	↓-0.7
2/20 08:50	118.3	↓-0.8
2/20 09:00	117.3	↓-1.0
2/20 09:10	116.1	↓-1.2
2/20 09:20	114.8	↓-1.3
2/20 09:30	113.3	↓-1.5
2/20 09:40	111.7	↓-1.6
2/20 09:50	109.9	↓-1.8
2/20 10:00	108.0	↓-1.9
2/20 10:10	106.0	↓-2.0
2/20 10:20	103.8	↓-2.2
2/20 10:30	101.6	↓-2.2
2/20 10:40	99.3	↓-2.3
2/20 10:50	96.9	↓-2.4
2/20 11:00	94.5	↓-2.4
2/20 11:10	92.0	↓-2.5
2/20 11:20	89.4	↓-2.6	最大潮位差
2/20 11:30	86.9	↓-2.5
2/20 11:40	84.3	↓-2.6	最大潮位差
2/20 11:50	81.7	↓-2.6	最大潮位差
2/20 12:00	79.2	↓-2.5
2/20 12:10	76.7	↓-2.5
2/20 12:20	74.2	↓-2.5
2/20 12:30	71.7	↓-2.5
2/20 12:40	69.3	↓-2.4
2/20 12:50	66.9	↓-2.4
2/20 13:00	64.7	↓-2.2
2/20 13:10	62.4	↓-2.3
2/20 13:20	60.3	↓-2.1
2/20 13:30	58.3	↓-2.0
2/20 13:40	56.3	↓-2.0
2/20 13:50	54.5	↓-1.8
2/20 14:00	52.8	↓-1.7
2/20 14:10	51.1	↓-1.7
2/20 14:20	49.7	↓-1.4
2/20 14:30	48.3	↓-1.4
2/20 14:40	47.1	↓-1.2
2/20 14:50	46.0	↓-1.1
2/20 15:00	45.1	↓-0.9
2/20 15:10	44.4	↓-0.7
2/20 15:20	43.8	↓-0.6
2/20 15:30	43.4	↓-0.4
2/20 15:40	43.1	↓-0.3
2/20 15:50	43.0	↓-0.1	干潮
2/20 16:00	43.1	↑0.1
2/20 16:10	43.3	↑0.2
2/20 16:20	43.7	↑0.4
2/20 16:30	44.2	↑0.5
2/20 16:40	44.9	↑0.7
2/20 16:50	45.7	↑0.8
2/20 17:00	46.6	↑0.9
2/20 17:10	47.7	↑1.1
2/20 17:20	48.8	↑1.1
2/20 17:30	50.1	↑1.3
2/20 17:40	51.4	↑1.3
2/20 17:50	52.8	↑1.4
2/20 18:00	54.3	↑1.5
2/20 18:10	55.8	↑1.5
2/20 18:20	57.4	↑1.6
2/20 18:30	58.9	↑1.5
2/20 18:40	60.5	↑1.6
2/20 18:50	62.1	↑1.6
2/20 19:00	63.7	↑1.6
2/20 19:10	65.3	↑1.6
2/20 19:20	66.8	↑1.5
2/20 19:30	68.3	↑1.5
2/20 19:40	69.8	↑1.5
2/20 19:50	71.2	↑1.4
2/20 20:00	72.5	↑1.3
2/20 20:10	73.9	↑1.4
2/20 20:20	75.1	↑1.2
2/20 20:30	76.3	↑1.2
2/20 20:40	77.4	↑1.1
2/20 20:50	78.4	↑1.0
2/20 21:00	79.3	↑0.9
2/20 21:10	80.1	↑0.8
2/20 21:20	80.9	↑0.8
2/20 21:30	81.6	↑0.7
2/20 21:40	82.2	↑0.6
2/20 21:50	82.7	↑0.5
2/20 22:00	83.1	↑0.4
2/20 22:10	83.5	↑0.4
2/20 22:20	83.8	↑0.3
2/20 22:30	84.0	↑0.2
2/20 22:40	84.2	↑0.2
2/20 22:50	84.3	↑0.1
2/20 23:00	84.3	0
2/20 23:10	84.3	0	満潮
2/20 23:20	84.3	0
2/20 23:30	84.3	0
2/20 23:40	84.3	0
2/20 23:50	84.2	↓-0.1