\begin{table}%t2
  \caption{Range of values explored for each
    parameter.\label{tab:parameter_space}}
    %\centering
\par
  \begin{tabular}{lllll}\hline\hline
    Parameter & min value & max value & \# Values & Sampling\\
    \hline
    $r_{\rm in} \ ({\rm AU})$   & 0.01   &  100  & 20  & log    \\
    $M_{\rm dust}$ ($M_\odot$)   & $10^{-13}$   &  $10^{-6}$  & 8  & log    \\
    $a_{\rm max} \ ({\rm AU})$  & 1   & 1~000& 10  & log    \\
    $\beta$                     & 1.0 & 1.25  & 5   & linear \\
    $\alpha$                    &$-0.5$ & $-1.5$  & 5   & linear \\
    $h_0$                       & 10  &  30   & 10  & linear  \\ 
    cos$(i)$                    & 0.05& 0.95  & 10  & linear  \\ 
    \hline
  \end{tabular}
\end{table}