20 (木)	02:04	07:53	13:26	20:00
	102cm	55cm	99cm	25cm
若潮 出 04:59 入 18:17 出 14:49 入 03:06

那珂湊（茨城）2062年04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
4/20 00:00	86.1	↑2.5
4/20 00:10	88.3	↑2.2
4/20 00:20	90.5	↑2.2
4/20 00:30	92.4	↑1.9
4/20 00:40	94.2	↑1.8
4/20 00:50	95.8	↑1.6
4/20 01:00	97.2	↑1.4
4/20 01:10	98.4	↑1.2
4/20 01:20	99.4	↑1.0
4/20 01:30	100.1	↑0.7
4/20 01:40	100.7	↑0.6
4/20 01:50	101.1	↑0.4
4/20 02:00	101.2	↑0.1	満潮
4/20 02:10	101.2	0
4/20 02:20	101.0	↓-0.2
4/20 02:30	100.5	↓-0.5
4/20 02:40	99.9	↓-0.6
4/20 02:50	99.1	↓-0.8
4/20 03:00	98.1	↓-1.0
4/20 03:10	97.0	↓-1.1
4/20 03:20	95.7	↓-1.3
4/20 03:30	94.3	↓-1.4
4/20 03:40	92.7	↓-1.6
4/20 03:50	91.0	↓-1.7
4/20 04:00	89.2	↓-1.8
4/20 04:10	87.4	↓-1.8
4/20 04:20	85.4	↓-2.0
4/20 04:30	83.4	↓-2.0
4/20 04:40	81.4	↓-2.0
4/20 04:50	79.3	↓-2.1
4/20 05:00	77.2	↓-2.1
4/20 05:10	75.1	↓-2.1
4/20 05:20	73.0	↓-2.1
4/20 05:30	71.0	↓-2.0
4/20 05:40	69.0	↓-2.0
4/20 05:50	67.1	↓-1.9
4/20 06:00	65.3	↓-1.8
4/20 06:10	63.6	↓-1.7
4/20 06:20	62.0	↓-1.6
4/20 06:30	60.5	↓-1.5
4/20 06:40	59.1	↓-1.4
4/20 06:50	57.9	↓-1.2
4/20 07:00	56.9	↓-1.0
4/20 07:10	56.0	↓-0.9
4/20 07:20	55.3	↓-0.7
4/20 07:30	54.8	↓-0.5
4/20 07:40	54.5	↓-0.3
4/20 07:50	54.4	↓-0.1	干潮
4/20 08:00	54.4	0
4/20 08:10	54.7	↑0.3
4/20 08:20	55.1	↑0.4
4/20 08:30	55.7	↑0.6
4/20 08:40	56.5	↑0.8
4/20 08:50	57.5	↑1.0
4/20 09:00	58.6	↑1.1
4/20 09:10	59.9	↑1.3
4/20 09:20	61.4	↑1.5
4/20 09:30	62.9	↑1.5
4/20 09:40	64.6	↑1.7
4/20 09:50	66.4	↑1.8
4/20 10:00	68.3	↑1.9
4/20 10:10	70.3	↑2.0
4/20 10:20	72.3	↑2.0
4/20 10:30	74.3	↑2.0
4/20 10:40	76.4	↑2.1
4/20 10:50	78.4	↑2.0
4/20 11:00	80.5	↑2.1
4/20 11:10	82.5	↑2.0
4/20 11:20	84.5	↑2.0
4/20 11:30	86.4	↑1.9
4/20 11:40	88.2	↑1.8
4/20 11:50	89.9	↑1.7
4/20 12:00	91.4	↑1.5
4/20 12:10	92.9	↑1.5
4/20 12:20	94.2	↑1.3
4/20 12:30	95.3	↑1.1
4/20 12:40	96.3	↑1.0
4/20 12:50	97.1	↑0.8
4/20 13:00	97.7	↑0.6
4/20 13:10	98.1	↑0.4
4/20 13:20	98.4	↑0.3	満潮
4/20 13:30	98.4	0
4/20 13:40	98.2	↓-0.2
4/20 13:50	97.8	↓-0.4
4/20 14:00	97.1	↓-0.7
4/20 14:10	96.3	↓-0.8
4/20 14:20	95.3	↓-1.0
4/20 14:30	94.0	↓-1.3
4/20 14:40	92.6	↓-1.4
4/20 14:50	91.0	↓-1.6
4/20 15:00	89.2	↓-1.8
4/20 15:10	87.2	↓-2.0
4/20 15:20	85.1	↓-2.1
4/20 15:30	82.8	↓-2.3
4/20 15:40	80.4	↓-2.4
4/20 15:50	77.8	↓-2.6
4/20 16:00	75.2	↓-2.6
4/20 16:10	72.4	↓-2.8
4/20 16:20	69.6	↓-2.8
4/20 16:30	66.7	↓-2.9
4/20 16:40	63.8	↓-2.9
4/20 16:50	60.9	↓-2.9
4/20 17:00	57.9	↓-3.0
4/20 17:10	55.0	↓-2.9
4/20 17:20	52.1	↓-2.9
4/20 17:30	49.2	↓-2.9
4/20 17:40	46.5	↓-2.7
4/20 17:50	43.8	↓-2.7
4/20 18:00	41.2	↓-2.6
4/20 18:10	38.8	↓-2.4
4/20 18:20	36.5	↓-2.3
4/20 18:30	34.4	↓-2.1
4/20 18:40	32.5	↓-1.9
4/20 18:50	30.7	↓-1.8
4/20 19:00	29.2	↓-1.5
4/20 19:10	27.8	↓-1.4
4/20 19:20	26.7	↓-1.1
4/20 19:30	25.9	↓-0.8
4/20 19:40	25.3	↓-0.6
4/20 19:50	24.9	↓-0.4	干潮
4/20 20:00	24.8	↓-0.1	干潮
4/20 20:10	24.9	↑0.1
4/20 20:20	25.3	↑0.4
4/20 20:30	26.0	↑0.7
4/20 20:40	26.9	↑0.9
4/20 20:50	28.1	↑1.2
4/20 21:00	29.5	↑1.4
4/20 21:10	31.1	↑1.6
4/20 21:20	33.0	↑1.9
4/20 21:30	35.1	↑2.1
4/20 21:40	37.4	↑2.3
4/20 21:50	39.8	↑2.4
4/20 22:00	42.4	↑2.6
4/20 22:10	45.2	↑2.8
4/20 22:20	48.1	↑2.9
4/20 22:30	51.1	↑3.0
4/20 22:40	54.2	↑3.1
4/20 22:50	57.3	↑3.1
4/20 23:00	60.5	↑3.2
4/20 23:10	63.7	↑3.2
4/20 23:20	67.0	↑3.3	最大潮位差
4/20 23:30	70.2	↑3.2
4/20 23:40	73.3	↑3.1
4/20 23:50	76.4	↑3.1