Level Information:

\[17\space\text{normal levels}\]
\[2\space\text{secret levels}\]
\[1\space\text{joke level}\]
$$ \begin{flalign} P(x) = \begin{cases} \frac{1}{\sigma \sqrt{2\pi}} \exp\left( -\frac{(x-\mu)^2}{2\sigma^2} \right) & \text{if } x \ge 0, \\ \int_{-\infty}^{x} \frac{\sin(t)}{t} \, dt & \text{if } -\pi < x < 0, \\ 0 & \text{otherwise.} \end{cases} && \end{flalign} $$