20 (水)	09:30	03:01	-	17:11
	104cm	69cm	-	34cm
小潮 出 06:21 入 17:24 出 01:03 入 11:37

那珂湊（茨城）2036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	78.8	↓-0.8
2/20 00:10	78.0	↓-0.8
2/20 00:20	77.2	↓-0.8
2/20 00:30	76.4	↓-0.8
2/20 00:40	75.5	↓-0.9
2/20 00:50	74.7	↓-0.8
2/20 01:00	73.9	↓-0.8
2/20 01:10	73.1	↓-0.8
2/20 01:20	72.4	↓-0.7
2/20 01:30	71.7	↓-0.7
2/20 01:40	71.0	↓-0.7
2/20 01:50	70.4	↓-0.6
2/20 02:00	69.9	↓-0.5
2/20 02:10	69.4	↓-0.5
2/20 02:20	69.1	↓-0.3
2/20 02:30	68.8	↓-0.3
2/20 02:40	68.6	↓-0.2
2/20 02:50	68.4	↓-0.2
2/20 03:00	68.4	0	干潮
2/20 03:10	68.4	0
2/20 03:20	68.6	↑0.2
2/20 03:30	68.8	↑0.2
2/20 03:40	69.1	↑0.3
2/20 03:50	69.5	↑0.4
2/20 04:00	70.0	↑0.5
2/20 04:10	70.6	↑0.6
2/20 04:20	71.3	↑0.7
2/20 04:30	72.0	↑0.7
2/20 04:40	72.8	↑0.8
2/20 04:50	73.7	↑0.9
2/20 05:00	74.7	↑1.0
2/20 05:10	75.8	↑1.1
2/20 05:20	76.9	↑1.1
2/20 05:30	78.0	↑1.1
2/20 05:40	79.3	↑1.3
2/20 05:50	80.5	↑1.2
2/20 06:00	81.9	↑1.4
2/20 06:10	83.2	↑1.3
2/20 06:20	84.6	↑1.4
2/20 06:30	86.0	↑1.4
2/20 06:40	87.4	↑1.4
2/20 06:50	88.9	↑1.5
2/20 07:00	90.3	↑1.4
2/20 07:10	91.7	↑1.4
2/20 07:20	93.1	↑1.4
2/20 07:30	94.4	↑1.3
2/20 07:40	95.7	↑1.3
2/20 07:50	96.9	↑1.2
2/20 08:00	98.1	↑1.2
2/20 08:10	99.2	↑1.1
2/20 08:20	100.2	↑1.0
2/20 08:30	101.1	↑0.9
2/20 08:40	101.8	↑0.7
2/20 08:50	102.5	↑0.7
2/20 09:00	103.0	↑0.5
2/20 09:10	103.4	↑0.4
2/20 09:20	103.6	↑0.2	満潮
2/20 09:30	103.6	0	満潮
2/20 09:40	103.5	↓-0.1
2/20 09:50	103.3	↓-0.2
2/20 10:00	102.9	↓-0.4
2/20 10:10	102.3	↓-0.6
2/20 10:20	101.5	↓-0.8
2/20 10:30	100.6	↓-0.9
2/20 10:40	99.5	↓-1.1
2/20 10:50	98.2	↓-1.3
2/20 11:00	96.8	↓-1.4
2/20 11:10	95.3	↓-1.5
2/20 11:20	93.6	↓-1.7
2/20 11:30	91.8	↓-1.8
2/20 11:40	89.8	↓-2.0
2/20 11:50	87.8	↓-2.0
2/20 12:00	85.7	↓-2.1
2/20 12:10	83.4	↓-2.3
2/20 12:20	81.2	↓-2.2
2/20 12:30	78.8	↓-2.4
2/20 12:40	76.4	↓-2.4
2/20 12:50	74.0	↓-2.4
2/20 13:00	71.5	↓-2.5	最大潮位差
2/20 13:10	69.1	↓-2.4
2/20 13:20	66.6	↓-2.5	最大潮位差
2/20 13:30	64.2	↓-2.4
2/20 13:40	61.8	↓-2.4
2/20 13:50	59.5	↓-2.3
2/20 14:00	57.2	↓-2.3
2/20 14:10	54.9	↓-2.3
2/20 14:20	52.8	↓-2.1
2/20 14:30	50.7	↓-2.1
2/20 14:40	48.7	↓-2.0
2/20 14:50	46.8	↓-1.9
2/20 15:00	45.0	↓-1.8
2/20 15:10	43.3	↓-1.7
2/20 15:20	41.7	↓-1.6
2/20 15:30	40.2	↓-1.5
2/20 15:40	38.9	↓-1.3
2/20 15:50	37.7	↓-1.2
2/20 16:00	36.6	↓-1.1
2/20 16:10	35.7	↓-0.9
2/20 16:20	34.9	↓-0.8
2/20 16:30	34.2	↓-0.7
2/20 16:40	33.7	↓-0.5
2/20 16:50	33.3	↓-0.4
2/20 17:00	33.1	↓-0.2
2/20 17:10	33.0	↓-0.1	干潮
2/20 17:20	33.1	↑0.1
2/20 17:30	33.3	↑0.2
2/20 17:40	33.7	↑0.4
2/20 17:50	34.2	↑0.5
2/20 18:00	34.8	↑0.6
2/20 18:10	35.6	↑0.8
2/20 18:20	36.5	↑0.9
2/20 18:30	37.6	↑1.1
2/20 18:40	38.7	↑1.1
2/20 18:50	40.0	↑1.3
2/20 19:00	41.4	↑1.4
2/20 19:10	42.9	↑1.5
2/20 19:20	44.5	↑1.6
2/20 19:30	46.1	↑1.6
2/20 19:40	47.9	↑1.8
2/20 19:50	49.7	↑1.8
2/20 20:00	51.5	↑1.8
2/20 20:10	53.4	↑1.9
2/20 20:20	55.3	↑1.9
2/20 20:30	57.3	↑2.0
2/20 20:40	59.2	↑1.9
2/20 20:50	61.1	↑1.9
2/20 21:00	63.0	↑1.9
2/20 21:10	64.8	↑1.8
2/20 21:20	66.7	↑1.9
2/20 21:30	68.4	↑1.7
2/20 21:40	70.1	↑1.7
2/20 21:50	71.7	↑1.6
2/20 22:00	73.2	↑1.5
2/20 22:10	74.6	↑1.4
2/20 22:20	75.9	↑1.3
2/20 22:30	77.1	↑1.2
2/20 22:40	78.2	↑1.1
2/20 22:50	79.2	↑1.0
2/20 23:00	80.1	↑0.9
2/20 23:10	80.9	↑0.8
2/20 23:20	81.5	↑0.6
2/20 23:30	82.0	↑0.5
2/20 23:40	82.5	↑0.5
2/20 23:50	82.8	↑0.3