9 (金)	02:53	08:38	14:09	20:43
	105cm	54cm	101cm	18cm
中潮 出 05:14 入 18:07 出 04:07 入 15:21

那珂湊（茨城）2021年04月9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
4/9 00:00	73.0	↑3.3
4/9 00:10	76.2	↑3.2
4/9 00:20	79.3	↑3.1
4/9 00:30	82.3	↑3.0
4/9 00:40	85.2	↑2.9
4/9 00:50	87.9	↑2.7
4/9 01:00	90.4	↑2.5
4/9 01:10	92.8	↑2.4
4/9 01:20	95.0	↑2.2
4/9 01:30	97.0	↑2.0
4/9 01:40	98.7	↑1.7
4/9 01:50	100.3	↑1.6
4/9 02:00	101.6	↑1.3
4/9 02:10	102.7	↑1.1
4/9 02:20	103.6	↑0.9
4/9 02:30	104.2	↑0.6
4/9 02:40	104.7	↑0.5
4/9 02:50	104.8	↑0.1	満潮
4/9 03:00	104.8	0
4/9 03:10	104.5	↓-0.3
4/9 03:20	104.0	↓-0.5
4/9 03:30	103.3	↓-0.7
4/9 03:40	102.3	↓-1.0
4/9 03:50	101.2	↓-1.1
4/9 04:00	99.9	↓-1.3
4/9 04:10	98.4	↓-1.5
4/9 04:20	96.8	↓-1.6
4/9 04:30	95.0	↓-1.8
4/9 04:40	93.1	↓-1.9
4/9 04:50	91.0	↓-2.1
4/9 05:00	88.9	↓-2.1
4/9 05:10	86.7	↓-2.2
4/9 05:20	84.4	↓-2.3
4/9 05:30	82.1	↓-2.3
4/9 05:40	79.8	↓-2.3
4/9 05:50	77.4	↓-2.4
4/9 06:00	75.1	↓-2.3
4/9 06:10	72.8	↓-2.3
4/9 06:20	70.5	↓-2.3
4/9 06:30	68.3	↓-2.2
4/9 06:40	66.3	↓-2.0
4/9 06:50	64.3	↓-2.0
4/9 07:00	62.4	↓-1.9
4/9 07:10	60.7	↓-1.7
4/9 07:20	59.1	↓-1.6
4/9 07:30	57.7	↓-1.4
4/9 07:40	56.4	↓-1.3
4/9 07:50	55.4	↓-1.0
4/9 08:00	54.5	↓-0.9
4/9 08:10	53.8	↓-0.7
4/9 08:20	53.4	↓-0.4
4/9 08:30	53.1	↓-0.3	干潮
4/9 08:40	53.1	0
4/9 08:50	53.2	↑0.1
4/9 09:00	53.6	↑0.4
4/9 09:10	54.2	↑0.6
4/9 09:20	55.0	↑0.8
4/9 09:30	55.9	↑0.9
4/9 09:40	57.1	↑1.2
4/9 09:50	58.4	↑1.3
4/9 10:00	59.9	↑1.5
4/9 10:10	61.5	↑1.6
4/9 10:20	63.3	↑1.8
4/9 10:30	65.2	↑1.9
4/9 10:40	67.2	↑2.0
4/9 10:50	69.2	↑2.0
4/9 11:00	71.4	↑2.2
4/9 11:10	73.6	↑2.2
4/9 11:20	75.8	↑2.2
4/9 11:30	78.0	↑2.2
4/9 11:40	80.2	↑2.2
4/9 11:50	82.4	↑2.2
4/9 12:00	84.5	↑2.1
4/9 12:10	86.6	↑2.1
4/9 12:20	88.6	↑2.0
4/9 12:30	90.5	↑1.9
4/9 12:40	92.2	↑1.7
4/9 12:50	93.9	↑1.7
4/9 13:00	95.3	↑1.4
4/9 13:10	96.6	↑1.3
4/9 13:20	97.8	↑1.2
4/9 13:30	98.7	↑0.9
4/9 13:40	99.4	↑0.7
4/9 13:50	100.0	↑0.6
4/9 14:00	100.3	↑0.3	満潮
4/9 14:10	100.3	0
4/9 14:20	100.2	↓-0.1
4/9 14:30	99.8	↓-0.4
4/9 14:40	99.2	↓-0.6
4/9 14:50	98.3	↓-0.9
4/9 15:00	97.2	↓-1.1
4/9 15:10	95.9	↓-1.3
4/9 15:20	94.4	↓-1.5
4/9 15:30	92.6	↓-1.8
4/9 15:40	90.7	↓-1.9
4/9 15:50	88.5	↓-2.2
4/9 16:00	86.2	↓-2.3
4/9 16:10	83.6	↓-2.6
4/9 16:20	80.9	↓-2.7
4/9 16:30	78.1	↓-2.8
4/9 16:40	75.1	↓-3.0
4/9 16:50	72.1	↓-3.0
4/9 17:00	68.9	↓-3.2
4/9 17:10	65.7	↓-3.2
4/9 17:20	62.4	↓-3.3
4/9 17:30	59.0	↓-3.4
4/9 17:40	55.7	↓-3.3
4/9 17:50	52.4	↓-3.3
4/9 18:00	49.1	↓-3.3
4/9 18:10	45.9	↓-3.2
4/9 18:20	42.7	↓-3.2
4/9 18:30	39.7	↓-3.0
4/9 18:40	36.8	↓-2.9
4/9 18:50	34.0	↓-2.8
4/9 19:00	31.4	↓-2.6
4/9 19:10	28.9	↓-2.5
4/9 19:20	26.7	↓-2.2
4/9 19:30	24.6	↓-2.1
4/9 19:40	22.8	↓-1.8
4/9 19:50	21.3	↓-1.5
4/9 20:00	20.0	↓-1.3
4/9 20:10	18.9	↓-1.1
4/9 20:20	18.1	↓-0.8
4/9 20:30	17.6	↓-0.5
4/9 20:40	17.4	↓-0.2	干潮
4/9 20:50	17.5	↑0.1
4/9 21:00	17.9	↑0.4
4/9 21:10	18.5	↑0.6
4/9 21:20	19.4	↑0.9
4/9 21:30	20.6	↑1.2
4/9 21:40	22.1	↑1.5
4/9 21:50	23.8	↑1.7
4/9 22:00	25.8	↑2.0
4/9 22:10	28.0	↑2.2
4/9 22:20	30.5	↑2.5
4/9 22:30	33.1	↑2.6
4/9 22:40	35.9	↑2.8
4/9 22:50	38.9	↑3.0
4/9 23:00	42.0	↑3.1
4/9 23:10	45.3	↑3.3
4/9 23:20	48.7	↑3.4
4/9 23:30	52.2	↑3.5	最大潮位差
4/9 23:40	55.7	↑3.5	最大潮位差
4/9 23:50	59.2	↑3.5	最大潮位差