20 (月)	02:01	07:55	13:13	19:47
	102cm	58cm	93cm	27cm
若潮 出 04:59 入 18:17 出 14:32 入 03:05

那珂湊（茨城）2043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	88.2	↑2.2
4/20 00:10	90.4	↑2.2
4/20 00:20	92.3	↑1.9
4/20 00:30	94.1	↑1.8
4/20 00:40	95.7	↑1.6
4/20 00:50	97.1	↑1.4
4/20 01:00	98.4	↑1.3
4/20 01:10	99.4	↑1.0
4/20 01:20	100.3	↑0.9
4/20 01:30	101.0	↑0.7
4/20 01:40	101.4	↑0.4
4/20 01:50	101.7	↑0.3
4/20 02:00	101.8	↑0.1	満潮
4/20 02:10	101.7	↓-0.1
4/20 02:20	101.4	↓-0.3
4/20 02:30	101.0	↓-0.4
4/20 02:40	100.3	↓-0.7
4/20 02:50	99.5	↓-0.8
4/20 03:00	98.6	↓-0.9
4/20 03:10	97.5	↓-1.1
4/20 03:20	96.2	↓-1.3
4/20 03:30	94.8	↓-1.4
4/20 03:40	93.3	↓-1.5
4/20 03:50	91.7	↓-1.6
4/20 04:00	90.0	↓-1.7
4/20 04:10	88.3	↓-1.7
4/20 04:20	86.4	↓-1.9
4/20 04:30	84.5	↓-1.9
4/20 04:40	82.6	↓-1.9
4/20 04:50	80.6	↓-2.0
4/20 05:00	78.7	↓-1.9
4/20 05:10	76.7	↓-2.0
4/20 05:20	74.8	↓-1.9
4/20 05:30	72.9	↓-1.9
4/20 05:40	71.0	↓-1.9
4/20 05:50	69.2	↓-1.8
4/20 06:00	67.5	↓-1.7
4/20 06:10	65.9	↓-1.6
4/20 06:20	64.4	↓-1.5
4/20 06:30	63.0	↓-1.4
4/20 06:40	61.8	↓-1.2
4/20 06:50	60.7	↓-1.1
4/20 07:00	59.7	↓-1.0
4/20 07:10	58.9	↓-0.8
4/20 07:20	58.2	↓-0.7
4/20 07:30	57.7	↓-0.5
4/20 07:40	57.4	↓-0.3
4/20 07:50	57.2	↓-0.2	干潮
4/20 08:00	57.3	↑0.1
4/20 08:10	57.5	↑0.2
4/20 08:20	57.8	↑0.3
4/20 08:30	58.4	↑0.6
4/20 08:40	59.1	↑0.7
4/20 08:50	59.9	↑0.8
4/20 09:00	60.9	↑1.0
4/20 09:10	62.0	↑1.1
4/20 09:20	63.3	↑1.3
4/20 09:30	64.6	↑1.3
4/20 09:40	66.1	↑1.5
4/20 09:50	67.7	↑1.6
4/20 10:00	69.3	↑1.6
4/20 10:10	71.0	↑1.7
4/20 10:20	72.7	↑1.7
4/20 10:30	74.4	↑1.7
4/20 10:40	76.1	↑1.7
4/20 10:50	77.9	↑1.8
4/20 11:00	79.6	↑1.7
4/20 11:10	81.2	↑1.6
4/20 11:20	82.8	↑1.6
4/20 11:30	84.4	↑1.6
4/20 11:40	85.8	↑1.4
4/20 11:50	87.1	↑1.3
4/20 12:00	88.4	↑1.3
4/20 12:10	89.4	↑1.0
4/20 12:20	90.4	↑1.0
4/20 12:30	91.2	↑0.8
4/20 12:40	91.8	↑0.6
4/20 12:50	92.3	↑0.5
4/20 13:00	92.6	↑0.3
4/20 13:10	92.7	↑0.1	満潮
4/20 13:20	92.7	0
4/20 13:30	92.4	↓-0.3
4/20 13:40	92.0	↓-0.4
4/20 13:50	91.4	↓-0.6
4/20 14:00	90.6	↓-0.8
4/20 14:10	89.6	↓-1.0
4/20 14:20	88.5	↓-1.1
4/20 14:30	87.1	↓-1.4
4/20 14:40	85.6	↓-1.5
4/20 14:50	84.0	↓-1.6
4/20 15:00	82.1	↓-1.9
4/20 15:10	80.2	↓-1.9
4/20 15:20	78.1	↓-2.1
4/20 15:30	75.9	↓-2.2
4/20 15:40	73.6	↓-2.3
4/20 15:50	71.2	↓-2.4
4/20 16:00	68.7	↓-2.5
4/20 16:10	66.1	↓-2.6
4/20 16:20	63.5	↓-2.6
4/20 16:30	60.9	↓-2.6
4/20 16:40	58.2	↓-2.7
4/20 16:50	55.5	↓-2.7
4/20 17:00	52.9	↓-2.6
4/20 17:10	50.3	↓-2.6
4/20 17:20	47.7	↓-2.6
4/20 17:30	45.2	↓-2.5
4/20 17:40	42.8	↓-2.4
4/20 17:50	40.5	↓-2.3
4/20 18:00	38.3	↓-2.2
4/20 18:10	36.3	↓-2.0
4/20 18:20	34.4	↓-1.9
4/20 18:30	32.6	↓-1.8
4/20 18:40	31.1	↓-1.5
4/20 18:50	29.7	↓-1.4
4/20 19:00	28.6	↓-1.1
4/20 19:10	27.6	↓-1.0
4/20 19:20	26.9	↓-0.7
4/20 19:30	26.4	↓-0.5
4/20 19:40	26.1	↓-0.3	干潮
4/20 19:50	26.1	0
4/20 20:00	26.3	↑0.2
4/20 20:10	26.8	↑0.5
4/20 20:20	27.5	↑0.7
4/20 20:30	28.4	↑0.9
4/20 20:40	29.6	↑1.2
4/20 20:50	31.0	↑1.4
4/20 21:00	32.6	↑1.6
4/20 21:10	34.4	↑1.8
4/20 21:20	36.5	↑2.1
4/20 21:30	38.7	↑2.2
4/20 21:40	41.1	↑2.4
4/20 21:50	43.6	↑2.5
4/20 22:00	46.3	↑2.7
4/20 22:10	49.1	↑2.8
4/20 22:20	52.0	↑2.9
4/20 22:30	55.0	↑3.0
4/20 22:40	58.1	↑3.1
4/20 22:50	61.2	↑3.1
4/20 23:00	64.3	↑3.1
4/20 23:10	67.5	↑3.2	最大潮位差
4/20 23:20	70.6	↑3.1
4/20 23:30	73.7	↑3.1
4/20 23:40	76.7	↑3.0
4/20 23:50	79.7	↑3.0