1 (日)	02:55	08:27	13:50	20:39
	105cm	60cm	103cm	11cm
中潮 出 05:25 入 18:01 出 04:09 入 15:06

那珂湊（茨城）2057年04月1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
4/1 00:00	72.3	↑3.3
4/1 00:10	75.5	↑3.2
4/1 00:20	78.6	↑3.1
4/1 00:30	81.6	↑3.0
4/1 00:40	84.5	↑2.9
4/1 00:50	87.2	↑2.7
4/1 01:00	89.7	↑2.5
4/1 01:10	92.1	↑2.4
4/1 01:20	94.2	↑2.1
4/1 01:30	96.2	↑2.0
4/1 01:40	97.9	↑1.7
4/1 01:50	99.5	↑1.6
4/1 02:00	100.8	↑1.3
4/1 02:10	101.9	↑1.1
4/1 02:20	102.8	↑0.9
4/1 02:30	103.4	↑0.6
4/1 02:40	103.8	↑0.4
4/1 02:50	104.0	↑0.2	満潮
4/1 03:00	104.0	0
4/1 03:10	103.8	↓-0.2
4/1 03:20	103.3	↓-0.5
4/1 03:30	102.7	↓-0.6
4/1 03:40	101.8	↓-0.9
4/1 03:50	100.8	↓-1.0
4/1 04:00	99.6	↓-1.2
4/1 04:10	98.2	↓-1.4
4/1 04:20	96.7	↓-1.5
4/1 04:30	95.1	↓-1.6
4/1 04:40	93.3	↓-1.8
4/1 04:50	91.5	↓-1.8
4/1 05:00	89.5	↓-2.0
4/1 05:10	87.5	↓-2.0
4/1 05:20	85.5	↓-2.0
4/1 05:30	83.4	↓-2.1
4/1 05:40	81.3	↓-2.1
4/1 05:50	79.2	↓-2.1
4/1 06:00	77.1	↓-2.1
4/1 06:10	75.1	↓-2.0
4/1 06:20	73.1	↓-2.0
4/1 06:30	71.2	↓-1.9
4/1 06:40	69.4	↓-1.8
4/1 06:50	67.7	↓-1.7
4/1 07:00	66.2	↓-1.5
4/1 07:10	64.7	↓-1.5
4/1 07:20	63.4	↓-1.3
4/1 07:30	62.3	↓-1.1
4/1 07:40	61.3	↓-1.0
4/1 07:50	60.5	↓-0.8
4/1 08:00	59.9	↓-0.6
4/1 08:10	59.5	↓-0.4
4/1 08:20	59.3	↓-0.2	干潮
4/1 08:30	59.3	0
4/1 08:40	59.5	↑0.2
4/1 08:50	59.8	↑0.3
4/1 09:00	60.4	↑0.6
4/1 09:10	61.1	↑0.7
4/1 09:20	62.1	↑1.0
4/1 09:30	63.2	↑1.1
4/1 09:40	64.4	↑1.2
4/1 09:50	65.8	↑1.4
4/1 10:00	67.4	↑1.6
4/1 10:10	69.0	↑1.6
4/1 10:20	70.8	↑1.8
4/1 10:30	72.7	↑1.9
4/1 10:40	74.6	↑1.9
4/1 10:50	76.7	↑2.1
4/1 11:00	78.7	↑2.0
4/1 11:10	80.8	↑2.1
4/1 11:20	82.8	↑2.0
4/1 11:30	84.9	↑2.1
4/1 11:40	86.9	↑2.0
4/1 11:50	88.9	↑2.0
4/1 12:00	90.8	↑1.9
4/1 12:10	92.6	↑1.8
4/1 12:20	94.3	↑1.7
4/1 12:30	95.9	↑1.6
4/1 12:40	97.3	↑1.4
4/1 12:50	98.6	↑1.3
4/1 13:00	99.7	↑1.1
4/1 13:10	100.7	↑1.0
4/1 13:20	101.4	↑0.7
4/1 13:30	101.9	↑0.5
4/1 13:40	102.2	↑0.3	満潮
4/1 13:50	102.3	↑0.1	満潮
4/1 14:00	102.2	↓-0.1
4/1 14:10	101.9	↓-0.3
4/1 14:20	101.3	↓-0.6
4/1 14:30	100.4	↓-0.9
4/1 14:40	99.4	↓-1.0
4/1 14:50	98.1	↓-1.3
4/1 15:00	96.6	↓-1.5
4/1 15:10	94.8	↓-1.8
4/1 15:20	92.8	↓-2.0
4/1 15:30	90.7	↓-2.1
4/1 15:40	88.3	↓-2.4
4/1 15:50	85.7	↓-2.6
4/1 16:00	83.0	↓-2.7
4/1 16:10	80.1	↓-2.9
4/1 16:20	77.0	↓-3.1
4/1 16:30	73.9	↓-3.1
4/1 16:40	70.6	↓-3.3
4/1 16:50	67.2	↓-3.4
4/1 17:00	63.7	↓-3.5
4/1 17:10	60.2	↓-3.5
4/1 17:20	56.7	↓-3.5
4/1 17:30	53.1	↓-3.6
4/1 17:40	49.6	↓-3.5
4/1 17:50	46.1	↓-3.5
4/1 18:00	42.6	↓-3.5
4/1 18:10	39.3	↓-3.3
4/1 18:20	36.0	↓-3.3
4/1 18:30	32.8	↓-3.2
4/1 18:40	29.8	↓-3.0
4/1 18:50	27.0	↓-2.8
4/1 19:00	24.3	↓-2.7
4/1 19:10	21.9	↓-2.4
4/1 19:20	19.6	↓-2.3
4/1 19:30	17.6	↓-2.0
4/1 19:40	15.8	↓-1.8
4/1 19:50	14.3	↓-1.5
4/1 20:00	13.1	↓-1.2
4/1 20:10	12.1	↓-1.0
4/1 20:20	11.4	↓-0.7
4/1 20:30	11.0	↓-0.4	干潮
4/1 20:40	10.9	↓-0.1
4/1 20:50	11.1	↑0.2
4/1 21:00	11.6	↑0.5
4/1 21:10	12.4	↑0.8
4/1 21:20	13.5	↑1.1
4/1 21:30	14.9	↑1.4
4/1 21:40	16.5	↑1.6
4/1 21:50	18.4	↑1.9
4/1 22:00	20.6	↑2.2
4/1 22:10	22.9	↑2.3
4/1 22:20	25.6	↑2.7
4/1 22:30	28.4	↑2.8
4/1 22:40	31.4	↑3.0
4/1 22:50	34.6	↑3.2
4/1 23:00	37.9	↑3.3
4/1 23:10	41.3	↑3.4
4/1 23:20	44.9	↑3.6
4/1 23:30	48.5	↑3.6
4/1 23:40	52.2	↑3.7
4/1 23:50	56.0	↑3.8	最大潮位差