20 (日)	05:46	11:50	17:51	-
	141cm	53cm	129cm	-
中潮 出 05:25 入 17:39 出 08:18 入 19:38

那珂湊（茨城）2020年09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
9/20 00:00	47.7	↑1.1
9/20 00:10	49.1	↑1.4
9/20 00:20	50.8	↑1.7
9/20 00:30	52.8	↑2.0
9/20 00:40	55.0	↑2.2
9/20 00:50	57.5	↑2.5
9/20 01:00	60.2	↑2.7
9/20 01:10	63.1	↑2.9
9/20 01:20	66.2	↑3.1
9/20 01:30	69.5	↑3.3
9/20 01:40	73.0	↑3.5
9/20 01:50	76.5	↑3.5
9/20 02:00	80.2	↑3.7
9/20 02:10	83.9	↑3.7
9/20 02:20	87.7	↑3.8
9/20 02:30	91.6	↑3.9	最大潮位差
9/20 02:40	95.4	↑3.8
9/20 02:50	99.2	↑3.8
9/20 03:00	103.0	↑3.8
9/20 03:10	106.7	↑3.7
9/20 03:20	110.4	↑3.7
9/20 03:30	113.9	↑3.5
9/20 03:40	117.3	↑3.4
9/20 03:50	120.5	↑3.2
9/20 04:00	123.5	↑3.0
9/20 04:10	126.4	↑2.9
9/20 04:20	129.0	↑2.6
9/20 04:30	131.4	↑2.4
9/20 04:40	133.5	↑2.1
9/20 04:50	135.3	↑1.8
9/20 05:00	136.9	↑1.6
9/20 05:10	138.2	↑1.3
9/20 05:20	139.1	↑0.9
9/20 05:30	139.8	↑0.7
9/20 05:40	140.1	↑0.3	満潮
9/20 05:50	140.1	0
9/20 06:00	139.8	↓-0.3
9/20 06:10	139.1	↓-0.7
9/20 06:20	138.1	↓-1.0
9/20 06:30	136.8	↓-1.3
9/20 06:40	135.2	↓-1.6
9/20 06:50	133.3	↓-1.9
9/20 07:00	131.1	↓-2.2
9/20 07:10	128.7	↓-2.4
9/20 07:20	126.0	↓-2.7
9/20 07:30	123.1	↓-2.9
9/20 07:40	120.0	↓-3.1
9/20 07:50	116.7	↓-3.3
9/20 08:00	113.2	↓-3.5
9/20 08:10	109.6	↓-3.6
9/20 08:20	105.9	↓-3.7
9/20 08:30	102.2	↓-3.7
9/20 08:40	98.4	↓-3.8
9/20 08:50	94.6	↓-3.8
9/20 09:00	90.8	↓-3.8
9/20 09:10	87.0	↓-3.8
9/20 09:20	83.4	↓-3.6
9/20 09:30	79.8	↓-3.6
9/20 09:40	76.4	↓-3.4
9/20 09:50	73.1	↓-3.3
9/20 10:00	70.0	↓-3.1
9/20 10:10	67.1	↓-2.9
9/20 10:20	64.5	↓-2.6
9/20 10:30	62.0	↓-2.5
9/20 10:40	59.9	↓-2.1
9/20 10:50	58.0	↓-1.9
9/20 11:00	56.3	↓-1.7
9/20 11:10	55.0	↓-1.3
9/20 11:20	54.0	↓-1.0
9/20 11:30	53.3	↓-0.7
9/20 11:40	52.8	↓-0.5	干潮
9/20 11:50	52.7	↓-0.1	干潮
9/20 12:00	52.9	↑0.2
9/20 12:10	53.4	↑0.5
9/20 12:20	54.1	↑0.7
9/20 12:30	55.2	↑1.1
9/20 12:40	56.5	↑1.3
9/20 12:50	58.0	↑1.5
9/20 13:00	59.8	↑1.8
9/20 13:10	61.9	↑2.1
9/20 13:20	64.1	↑2.2
9/20 13:30	66.5	↑2.4
9/20 13:40	69.1	↑2.6
9/20 13:50	71.9	↑2.8
9/20 14:00	74.8	↑2.9
9/20 14:10	77.8	↑3.0
9/20 14:20	80.9	↑3.1
9/20 14:30	84.0	↑3.1
9/20 14:40	87.3	↑3.3
9/20 14:50	90.5	↑3.2
9/20 15:00	93.7	↑3.2
9/20 15:10	96.9	↑3.2
9/20 15:20	100.1	↑3.2
9/20 15:30	103.2	↑3.1
9/20 15:40	106.2	↑3.0
9/20 15:50	109.1	↑2.9
9/20 16:00	111.8	↑2.7
9/20 16:10	114.4	↑2.6
9/20 16:20	116.9	↑2.5
9/20 16:30	119.1	↑2.2
9/20 16:40	121.1	↑2.0
9/20 16:50	122.9	↑1.8
9/20 17:00	124.5	↑1.6
9/20 17:10	125.7	↑1.2
9/20 17:20	126.8	↑1.1
9/20 17:30	127.5	↑0.7
9/20 17:40	127.9	↑0.4
9/20 17:50	128.1	↑0.2	満潮
9/20 18:00	127.9	↓-0.2
9/20 18:10	127.4	↓-0.5
9/20 18:20	126.7	↓-0.7
9/20 18:30	125.6	↓-1.1
9/20 18:40	124.2	↓-1.4
9/20 18:50	122.5	↓-1.7
9/20 19:00	120.6	↓-1.9
9/20 19:10	118.3	↓-2.3
9/20 19:20	115.8	↓-2.5
9/20 19:30	113.1	↓-2.7
9/20 19:40	110.2	↓-2.9
9/20 19:50	107.0	↓-3.2
9/20 20:00	103.7	↓-3.3
9/20 20:10	100.2	↓-3.5
9/20 20:20	96.6	↓-3.6
9/20 20:30	92.9	↓-3.7
9/20 20:40	89.1	↓-3.8
9/20 20:50	85.3	↓-3.8
9/20 21:00	81.4	↓-3.9	最大潮位差
9/20 21:10	77.6	↓-3.8
9/20 21:20	73.8	↓-3.8
9/20 21:30	70.1	↓-3.7
9/20 21:40	66.5	↓-3.6
9/20 21:50	63.0	↓-3.5
9/20 22:00	59.6	↓-3.4
9/20 22:10	56.5	↓-3.1
9/20 22:20	53.5	↓-3.0
9/20 22:30	50.8	↓-2.7
9/20 22:40	48.3	↓-2.5
9/20 22:50	46.1	↓-2.2
9/20 23:00	44.1	↓-2.0
9/20 23:10	42.5	↓-1.6
9/20 23:20	41.1	↓-1.4
9/20 23:30	40.0	↓-1.1
9/20 23:40	39.3	↓-0.7
9/20 23:50	38.8	↓-0.5