\begin{table}%t2
%\centering
\par
\caption{\label{delaymax}The maximum $t_{\rm total}$ as a function of the galactocentric distance. }
\small
\begin{tabular}{cccc}
  \hline\hline
& 4 kpc   & 8 kpc &12 kpc\\
  \hline
  Maximum delay& 48 Myr  &114 Myr& 245 Myr\\
% &  &  \\ 
  \hline
 \end{tabular}
\end{table}