\begin{table}%t2
     \caption{Mesogranule characteristics, $t_{0}=50$ min.}
     \label{table:2}
     %\centering
\par
     \small
\par
     \begin{tabular}{l c c c}
     \hline
     \hline
     parameter & mesodiss & mesofrag & mesodiss~+ mesofrag \\
     \hline
   lifetime (min) & 91.8 & 111.6 & 101.7 \\
   Ploner et~al. (\cite{Ploner2000})  &  &   & 60--120 \\
   \hline
   size (Mm) & 2.8 & 5.8     & 4.3 \\
   Ploner et~al. (\cite{Ploner2000})  &  &  & $\sim$7 \\
     \hline
     \end{tabular}
     \end{table}