What is the value of m and n

The value $m$ is the frequency for the height range $125 \le h < 130$. This can be found by subtracting the cumulative frequency for $h < 125$ from the cumulative frequency for $h < 130$.
From the table, the cumulative frequency for $h < 130$ is 70.
From the previous calculation, $p = 40$ is the cumulative frequency for $h < 125$.

$$m = 70 - p = 70 - 40 = 30$$

The value $n$ is the frequency for the height range $140 \le h < 145$. This can be found by subtracting the cumulative frequency for $h < 140$ from the cumulative frequency for $h < 145$.
From the table, the cumulative frequency for $h < 145$ is 100.
From the previous calculation, $r = 96$ is the cumulative frequency for $h < 140$.

$$n = 100 - r = 100 - 96 = 4$$

The values are:
$m = \boxed{30}$
$n = \boxed{4}$