20 (土)	09:47	03:36	-	17:35
	104cm	73cm	-	28cm
小潮 出 06:21 入 17:24 出 01:30 入 11:58

那珂湊（茨城）2055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	84.1	↓-0.4
2/20 00:10	83.5	↓-0.6
2/20 00:20	82.9	↓-0.6
2/20 00:30	82.2	↓-0.7
2/20 00:40	81.5	↓-0.7
2/20 00:50	80.8	↓-0.7
2/20 01:00	80.1	↓-0.7
2/20 01:10	79.3	↓-0.8
2/20 01:20	78.5	↓-0.8
2/20 01:30	77.8	↓-0.7
2/20 01:40	77.1	↓-0.7
2/20 01:50	76.4	↓-0.7
2/20 02:00	75.7	↓-0.7
2/20 02:10	75.1	↓-0.6
2/20 02:20	74.6	↓-0.5
2/20 02:30	74.1	↓-0.5
2/20 02:40	73.6	↓-0.5
2/20 02:50	73.3	↓-0.3
2/20 03:00	72.9	↓-0.4
2/20 03:10	72.7	↓-0.2
2/20 03:20	72.6	↓-0.1
2/20 03:30	72.5	↓-0.1	干潮
2/20 03:40	72.5	0
2/20 03:50	72.6	↑0.1
2/20 04:00	72.7	↑0.1
2/20 04:10	73.0	↑0.3
2/20 04:20	73.3	↑0.3
2/20 04:30	73.7	↑0.4
2/20 04:40	74.2	↑0.5
2/20 04:50	74.8	↑0.6
2/20 05:00	75.5	↑0.7
2/20 05:10	76.2	↑0.7
2/20 05:20	77.0	↑0.8
2/20 05:30	77.9	↑0.9
2/20 05:40	78.9	↑1.0
2/20 05:50	79.9	↑1.0
2/20 06:00	81.0	↑1.1
2/20 06:10	82.2	↑1.2
2/20 06:20	83.4	↑1.2
2/20 06:30	84.6	↑1.2
2/20 06:40	85.9	↑1.3
2/20 06:50	87.2	↑1.3
2/20 07:00	88.5	↑1.3
2/20 07:10	89.8	↑1.3
2/20 07:20	91.2	↑1.4
2/20 07:30	92.5	↑1.3
2/20 07:40	93.8	↑1.3
2/20 07:50	95.1	↑1.3
2/20 08:00	96.3	↑1.2
2/20 08:10	97.5	↑1.2
2/20 08:20	98.6	↑1.1
2/20 08:30	99.6	↑1.0
2/20 08:40	100.6	↑1.0
2/20 08:50	101.4	↑0.8
2/20 09:00	102.1	↑0.7
2/20 09:10	102.7	↑0.6
2/20 09:20	103.2	↑0.5
2/20 09:30	103.5	↑0.3
2/20 09:40	103.7	↑0.2	満潮
2/20 09:50	103.7	0
2/20 10:00	103.6	↓-0.1
2/20 10:10	103.3	↓-0.3
2/20 10:20	102.8	↓-0.5
2/20 10:30	102.1	↓-0.7
2/20 10:40	101.3	↓-0.8
2/20 10:50	100.3	↓-1.0
2/20 11:00	99.2	↓-1.1
2/20 11:10	97.9	↓-1.3
2/20 11:20	96.4	↓-1.5
2/20 11:30	94.8	↓-1.6
2/20 11:40	93.1	↓-1.7
2/20 11:50	91.2	↓-1.9
2/20 12:00	89.2	↓-2.0
2/20 12:10	87.0	↓-2.2
2/20 12:20	84.8	↓-2.2
2/20 12:30	82.5	↓-2.3
2/20 12:40	80.1	↓-2.4
2/20 12:50	77.6	↓-2.5
2/20 13:00	75.1	↓-2.5
2/20 13:10	72.6	↓-2.5
2/20 13:20	70.0	↓-2.6	最大潮位差
2/20 13:30	67.4	↓-2.6	最大潮位差
2/20 13:40	64.8	↓-2.6	最大潮位差
2/20 13:50	62.2	↓-2.6	最大潮位差
2/20 14:00	59.7	↓-2.5
2/20 14:10	57.2	↓-2.5
2/20 14:20	54.7	↓-2.5
2/20 14:30	52.2	↓-2.5
2/20 14:40	49.9	↓-2.3
2/20 14:50	47.6	↓-2.3
2/20 15:00	45.4	↓-2.2
2/20 15:10	43.3	↓-2.1
2/20 15:20	41.3	↓-2.0
2/20 15:30	39.4	↓-1.9
2/20 15:40	37.6	↓-1.8
2/20 15:50	35.9	↓-1.7
2/20 16:00	34.4	↓-1.5
2/20 16:10	33.0	↓-1.4
2/20 16:20	31.7	↓-1.3
2/20 16:30	30.6	↓-1.1
2/20 16:40	29.7	↓-0.9
2/20 16:50	28.9	↓-0.8
2/20 17:00	28.2	↓-0.7
2/20 17:10	27.7	↓-0.5
2/20 17:20	27.4	↓-0.3
2/20 17:30	27.3	↓-0.1	干潮
2/20 17:40	27.3	0
2/20 17:50	27.5	↑0.2
2/20 18:00	27.8	↑0.3
2/20 18:10	28.3	↑0.5
2/20 18:20	29.0	↑0.7
2/20 18:30	29.8	↑0.8
2/20 18:40	30.8	↑1.0
2/20 18:50	31.9	↑1.1
2/20 19:00	33.2	↑1.3
2/20 19:10	34.6	↑1.4
2/20 19:20	36.2	↑1.6
2/20 19:30	37.9	↑1.7
2/20 19:40	39.6	↑1.7
2/20 19:50	41.5	↑1.9
2/20 20:00	43.5	↑2.0
2/20 20:10	45.6	↑2.1
2/20 20:20	47.7	↑2.1
2/20 20:30	49.9	↑2.2
2/20 20:40	52.1	↑2.2
2/20 20:50	54.3	↑2.2
2/20 21:00	56.6	↑2.3
2/20 21:10	58.8	↑2.2
2/20 21:20	61.0	↑2.2
2/20 21:30	63.2	↑2.2
2/20 21:40	65.4	↑2.2
2/20 21:50	67.5	↑2.1
2/20 22:00	69.5	↑2.0
2/20 22:10	71.5	↑2.0
2/20 22:20	73.4	↑1.9
2/20 22:30	75.2	↑1.8
2/20 22:40	76.8	↑1.6
2/20 22:50	78.4	↑1.6
2/20 23:00	79.8	↑1.4
2/20 23:10	81.2	↑1.4
2/20 23:20	82.4	↑1.2
2/20 23:30	83.4	↑1.0
2/20 23:40	84.4	↑1.0
2/20 23:50	85.2	↑0.8