\begin{table}%t2
      \caption{Possible values of the population parameters.}
      \label{parameters}
         %\centering
\par
         \begin{tabular}{ll}
            \hline
            \hline
 Parameter & Possible values \\
            \hline
 $M_{y+i}$:$M_{\rm o}$    & 0:1, 1:100, 1:30, 1:10, 1:3, 1:1, 3:1, 10:1, 1:0 \\
 ${\rm age}_{y+i}$          & 1, 2, 5, 10, 20, 50, 100, 200, 500 Myr \\
 ${\rm [Fe/H]}_{y+i}$ & Taken from \citet{cuisinier} or --1 \\
 ${\rm age}_{\rm o}$          & Fixed at 5 Gyr \\
 ${\rm [Fe/H]}_{\rm o}$ & Fixed at --1.5 \\
            \hline
         \end{tabular}
   \end{table}