20 (木)	08:49	02:30	-	16:34
	106cm	71cm	-	28cm
小潮 出 06:21 入 17:24 出 11:03 入 00:57 潮干狩り ○ 15:31～17:24

那珂湊（茨城）2059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	79.5	↓-0.9
2/20 00:10	78.5	↓-1.0
2/20 00:20	77.6	↓-0.9
2/20 00:30	76.7	↓-0.9
2/20 00:40	75.8	↓-0.9
2/20 00:50	75.0	↓-0.8
2/20 01:00	74.2	↓-0.8
2/20 01:10	73.5	↓-0.7
2/20 01:20	72.8	↓-0.7
2/20 01:30	72.2	↓-0.6
2/20 01:40	71.7	↓-0.5
2/20 01:50	71.3	↓-0.4
2/20 02:00	70.9	↓-0.4
2/20 02:10	70.7	↓-0.2
2/20 02:20	70.5	↓-0.2	干潮
2/20 02:30	70.5	0	干潮
2/20 02:40	70.6	↑0.1
2/20 02:50	70.7	↑0.1
2/20 03:00	71.0	↑0.3
2/20 03:10	71.3	↑0.3
2/20 03:20	71.8	↑0.5
2/20 03:30	72.3	↑0.5
2/20 03:40	73.0	↑0.7
2/20 03:50	73.7	↑0.7
2/20 04:00	74.5	↑0.8
2/20 04:10	75.4	↑0.9
2/20 04:20	76.4	↑1.0
2/20 04:30	77.5	↑1.1
2/20 04:40	78.6	↑1.1
2/20 04:50	79.8	↑1.2
2/20 05:00	81.0	↑1.2
2/20 05:10	82.3	↑1.3
2/20 05:20	83.6	↑1.3
2/20 05:30	85.0	↑1.4
2/20 05:40	86.4	↑1.4
2/20 05:50	87.8	↑1.4
2/20 06:00	89.2	↑1.4
2/20 06:10	90.6	↑1.4
2/20 06:20	92.1	↑1.5
2/20 06:30	93.5	↑1.4
2/20 06:40	94.8	↑1.3
2/20 06:50	96.2	↑1.4
2/20 07:00	97.5	↑1.3
2/20 07:10	98.7	↑1.2
2/20 07:20	99.9	↑1.2
2/20 07:30	101.0	↑1.1
2/20 07:40	101.9	↑0.9
2/20 07:50	102.8	↑0.9
2/20 08:00	103.6	↑0.8
2/20 08:10	104.2	↑0.6
2/20 08:20	104.7	↑0.5
2/20 08:30	105.1	↑0.4
2/20 08:40	105.3	↑0.2	満潮
2/20 08:50	105.4	↑0.1
2/20 09:00	105.3	↓-0.1
2/20 09:10	105.0	↓-0.3
2/20 09:20	104.5	↓-0.5
2/20 09:30	103.9	↓-0.6
2/20 09:40	103.1	↓-0.8
2/20 09:50	102.1	↓-1.0
2/20 10:00	101.0	↓-1.1
2/20 10:10	99.6	↓-1.4
2/20 10:20	98.1	↓-1.5
2/20 10:30	96.5	↓-1.6
2/20 10:40	94.7	↓-1.8
2/20 10:50	92.7	↓-2.0
2/20 11:00	90.6	↓-2.1
2/20 11:10	88.4	↓-2.2
2/20 11:20	86.1	↓-2.3
2/20 11:30	83.7	↓-2.4
2/20 11:40	81.2	↓-2.5
2/20 11:50	78.6	↓-2.6
2/20 12:00	76.0	↓-2.6
2/20 12:10	73.3	↓-2.7	最大潮位差
2/20 12:20	70.6	↓-2.7	最大潮位差
2/20 12:30	67.9	↓-2.7	最大潮位差
2/20 12:40	65.2	↓-2.7	最大潮位差
2/20 12:50	62.5	↓-2.7	最大潮位差
2/20 13:00	59.8	↓-2.7	最大潮位差
2/20 13:10	57.2	↓-2.6
2/20 13:20	54.7	↓-2.5
2/20 13:30	52.2	↓-2.5
2/20 13:40	49.7	↓-2.5
2/20 13:50	47.4	↓-2.3
2/20 14:00	45.2	↓-2.2
2/20 14:10	43.1	↓-2.1
2/20 14:20	41.1	↓-2.0
2/20 14:30	39.2	↓-1.9
2/20 14:40	37.4	↓-1.8
2/20 14:50	35.8	↓-1.6
2/20 15:00	34.3	↓-1.5
2/20 15:10	33.0	↓-1.3
2/20 15:20	31.8	↓-1.2
2/20 15:30	30.7	↓-1.1
2/20 15:40	29.8	↓-0.9
2/20 15:50	29.1	↓-0.7
2/20 16:00	28.5	↓-0.6
2/20 16:10	28.1	↓-0.4
2/20 16:20	27.8	↓-0.3
2/20 16:30	27.7	↓-0.1	干潮
2/20 16:40	27.7	0
2/20 16:50	27.9	↑0.2
2/20 17:00	28.3	↑0.4
2/20 17:10	28.8	↑0.5
2/20 17:20	29.4	↑0.6
2/20 17:30	30.2	↑0.8
2/20 17:40	31.1	↑0.9
2/20 17:50	32.2	↑1.1
2/20 18:00	33.4	↑1.2
2/20 18:10	34.7	↑1.3
2/20 18:20	36.1	↑1.4
2/20 18:30	37.6	↑1.5
2/20 18:40	39.3	↑1.7
2/20 18:50	41.0	↑1.7
2/20 19:00	42.8	↑1.8
2/20 19:10	44.7	↑1.9
2/20 19:20	46.6	↑1.9
2/20 19:30	48.6	↑2.0
2/20 19:40	50.6	↑2.0
2/20 19:50	52.7	↑2.1
2/20 20:00	54.8	↑2.1
2/20 20:10	56.8	↑2.0
2/20 20:20	58.9	↑2.1
2/20 20:30	60.9	↑2.0
2/20 20:40	62.9	↑2.0
2/20 20:50	64.9	↑2.0
2/20 21:00	66.8	↑1.9
2/20 21:10	68.6	↑1.8
2/20 21:20	70.4	↑1.8
2/20 21:30	72.1	↑1.7
2/20 21:40	73.6	↑1.5
2/20 21:50	75.1	↑1.5
2/20 22:00	76.5	↑1.4
2/20 22:10	77.7	↑1.2
2/20 22:20	78.9	↑1.2
2/20 22:30	79.9	↑1.0
2/20 22:40	80.8	↑0.9
2/20 22:50	81.6	↑0.8
2/20 23:00	82.3	↑0.7
2/20 23:10	82.9	↑0.6
2/20 23:20	83.4	↑0.5
2/20 23:30	83.7	↑0.3
2/20 23:40	84.0	↑0.3
2/20 23:50	84.2	↑0.2