\begin{table}%t2
\caption{The grid of Z01 evolutionary sequences. All sequences assume $Z_{{\rm gas}}=Z_{{\rm stars}}$, a gas covering factor of~1.0, a hydrogen number density of 100~cm$^{-3}$ and the IMF~slope, $\alpha$, to be valid throughout the stellar mass range 0.08--120~$M_\odot$. The grid consists of all possible combinations of the parameter values listed below. In addition to these, 108~sequences with $M_{{\rm up}}=40~M_\odot$ were generated for test purposes with variations in IMF~slope, metallicity, star formation history and redshift, but with fixed $M_{{\rm tot}}=10^9~M_\odot$ and filling factor~0.01.}\label{modelgrid}
%\centerline
{
\begin{tabular}{ll} 
\hline
\hline
$M_{{\rm tot}}$ ($M_\odot$) & $10^9$, $10^{10}$ \\
IMF, $\alpha$ & 1.85, 2.35, 2.85 \\
SFH & c$10^8$, e$5\times10^8$, e$1\times10^9$, e$3\times10^9$, e$6\times10^9$\\
    & e$15\times10^9$, c$15\times10^9$, e$-15\times10^9$, e$-2\times10^9$\\
Metallicity, $Z $ & 0.001, 0.004 \\
Filling factor & 0.01, 0.1\\
Redshift, $z$ & 0.00, 0.01\\
\hline
\end{tabular}}
\medskip
IMF: ${\rm d}N/{\rm d}m \propto m^{-\alpha}$. \\
SFH = Star formation history.\\
c = Constant star formation rate during the subsequent number of years.\\
e = Exponentially declining/increasing star formation rate  with~$\tau$ equal to the subsequent number of years. 
\end{table}