20 (日)	12:13	06:11	-	17:52
	98cm	54cm	-	64cm
若潮 出 04:21 入 18:59 出 13:46 入 00:48

那珂湊（茨城）2021年06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
6/20 00:00	112.3	↓-0.6
6/20 00:10	111.5	↓-0.8
6/20 00:20	110.5	↓-1.0
6/20 00:30	109.4	↓-1.1
6/20 00:40	108.1	↓-1.3
6/20 00:50	106.6	↓-1.5
6/20 01:00	105.0	↓-1.6
6/20 01:10	103.3	↓-1.7
6/20 01:20	101.4	↓-1.9
6/20 01:30	99.5	↓-1.9
6/20 01:40	97.4	↓-2.1
6/20 01:50	95.3	↓-2.1
6/20 02:00	93.1	↓-2.2
6/20 02:10	90.8	↓-2.3
6/20 02:20	88.6	↓-2.2
6/20 02:30	86.2	↓-2.4	最大潮位差
6/20 02:40	83.9	↓-2.3
6/20 02:50	81.6	↓-2.3
6/20 03:00	79.3	↓-2.3
6/20 03:10	77.0	↓-2.3
6/20 03:20	74.8	↓-2.2
6/20 03:30	72.6	↓-2.2
6/20 03:40	70.5	↓-2.1
6/20 03:50	68.5	↓-2.0
6/20 04:00	66.6	↓-1.9
6/20 04:10	64.7	↓-1.9
6/20 04:20	63.0	↓-1.7
6/20 04:30	61.4	↓-1.6
6/20 04:40	59.9	↓-1.5
6/20 04:50	58.5	↓-1.4
6/20 05:00	57.3	↓-1.2
6/20 05:10	56.2	↓-1.1
6/20 05:20	55.3	↓-0.9
6/20 05:30	54.6	↓-0.7
6/20 05:40	54.0	↓-0.6
6/20 05:50	53.5	↓-0.5
6/20 06:00	53.3	↓-0.2
6/20 06:10	53.2	↓-0.1	干潮
6/20 06:20	53.3	↑0.1
6/20 06:30	53.5	↑0.2
6/20 06:40	53.9	↑0.4
6/20 06:50	54.5	↑0.6
6/20 07:00	55.2	↑0.7
6/20 07:10	56.1	↑0.9
6/20 07:20	57.2	↑1.1
6/20 07:30	58.3	↑1.1
6/20 07:40	59.7	↑1.4
6/20 07:50	61.1	↑1.4
6/20 08:00	62.6	↑1.5
6/20 08:10	64.3	↑1.7
6/20 08:20	66.0	↑1.7
6/20 08:30	67.8	↑1.8
6/20 08:40	69.7	↑1.9
6/20 08:50	71.6	↑1.9
6/20 09:00	73.5	↑1.9
6/20 09:10	75.5	↑2.0
6/20 09:20	77.4	↑1.9
6/20 09:30	79.4	↑2.0
6/20 09:40	81.3	↑1.9
6/20 09:50	83.2	↑1.9
6/20 10:00	85.0	↑1.8
6/20 10:10	86.7	↑1.7
6/20 10:20	88.3	↑1.6
6/20 10:30	89.9	↑1.6
6/20 10:40	91.3	↑1.4
6/20 10:50	92.7	↑1.4
6/20 11:00	93.8	↑1.1
6/20 11:10	94.9	↑1.1
6/20 11:20	95.8	↑0.9
6/20 11:30	96.5	↑0.7
6/20 11:40	97.1	↑0.6
6/20 11:50	97.6	↑0.5
6/20 12:00	97.8	↑0.2
6/20 12:10	98.0	↑0.2	満潮
6/20 12:20	97.9	↓-0.1
6/20 12:30	97.7	↓-0.2
6/20 12:40	97.4	↓-0.3
6/20 12:50	96.9	↓-0.5
6/20 13:00	96.2	↓-0.7
6/20 13:10	95.5	↓-0.7
6/20 13:20	94.6	↓-0.9
6/20 13:30	93.6	↓-1.0
6/20 13:40	92.4	↓-1.2
6/20 13:50	91.2	↓-1.2
6/20 14:00	89.9	↓-1.3
6/20 14:10	88.5	↓-1.4
6/20 14:20	87.1	↓-1.4
6/20 14:30	85.6	↓-1.5
6/20 14:40	84.1	↓-1.5
6/20 14:50	82.5	↓-1.6
6/20 15:00	81.0	↓-1.5
6/20 15:10	79.4	↓-1.6
6/20 15:20	77.9	↓-1.5
6/20 15:30	76.4	↓-1.5
6/20 15:40	74.9	↓-1.5
6/20 15:50	73.4	↓-1.5
6/20 16:00	72.1	↓-1.3
6/20 16:10	70.7	↓-1.4
6/20 16:20	69.5	↓-1.2
6/20 16:30	68.4	↓-1.1
6/20 16:40	67.4	↓-1.0
6/20 16:50	66.5	↓-0.9
6/20 17:00	65.7	↓-0.8
6/20 17:10	65.0	↓-0.7
6/20 17:20	64.5	↓-0.5
6/20 17:30	64.1	↓-0.4
6/20 17:40	63.8	↓-0.3
6/20 17:50	63.7	↓-0.1	干潮
6/20 18:00	63.8	↑0.1
6/20 18:10	64.0	↑0.2
6/20 18:20	64.4	↑0.4
6/20 18:30	64.9	↑0.5
6/20 18:40	65.6	↑0.7
6/20 18:50	66.5	↑0.9
6/20 19:00	67.5	↑1.0
6/20 19:10	68.7	↑1.2
6/20 19:20	70.0	↑1.3
6/20 19:30	71.5	↑1.5
6/20 19:40	73.0	↑1.5
6/20 19:50	74.8	↑1.8
6/20 20:00	76.6	↑1.8
6/20 20:10	78.5	↑1.9
6/20 20:20	80.5	↑2.0
6/20 20:30	82.6	↑2.1
6/20 20:40	84.8	↑2.2
6/20 20:50	87.0	↑2.2
6/20 21:00	89.2	↑2.2
6/20 21:10	91.5	↑2.3
6/20 21:20	93.7	↑2.2
6/20 21:30	95.9	↑2.2
6/20 21:40	98.1	↑2.2
6/20 21:50	100.3	↑2.2
6/20 22:00	102.4	↑2.1
6/20 22:10	104.4	↑2.0
6/20 22:20	106.3	↑1.9
6/20 22:30	108.1	↑1.8
6/20 22:40	109.7	↑1.6
6/20 22:50	111.2	↑1.5
6/20 23:00	112.6	↑1.4
6/20 23:10	113.7	↑1.1
6/20 23:20	114.7	↑1.0
6/20 23:30	115.5	↑0.8
6/20 23:40	116.2	↑0.7
6/20 23:50	116.6	↑0.4