\begin{table}%t1
\caption{\label{tab:class_models}Classes of models tested in the paper.}
%\centering
\par
\begin{tabular}{ccc} 
\hline\hline \noalign{\smallskip}
Model    & Transport parameters  & Description  \\
\hline 
I        & $\{K_0,~ \delta, ~ V_{\rm c}\}$         & Diffusion + convection    \\
II       & $\{K_0,~ \delta, ~ V_{\rm a}\}$         & Diffusion + reacceleration  \\
III      & $\{K_0,~ \delta, ~ V_{\rm c}, ~ V_{\rm a}\}$ & Diff. + conv. + reac. \\    
\hline
\end{tabular}
\end{table}