\begin{table}%t4
\caption{Comparison of bump properties for stellar models of
$1~\msun$ and $Z=0.001$. The references are:
\citet[ Padova]{padua:2000}, \citet[ Pisa]{cdc:2004},
\citet[ BASTI]{pcsc:2004}, and \citet[ Y$^2$]{kdya:2002}.}
\label{t:4} 
%\centering
\small
\begin{tabular}{l|rrrrr}
\hline\hline
 & & & & & \\[-8pt]
                  & Padova & Pisa & BASTI & Y$^2$  & This work \\ \hline
Age (Gyr)         & 6.514 & 6.331 & 6.023 & 6.769 & 6.222 \\
$\log L/L_\odot$  & 1.971 & 2.089 & 2.106 & 2.101 & 2.153 \\
$\log T_{\rm eff}$ & 3.698 & 3.689 & 3.694 & 3.689 & 3.693 \\
Metal mix.        & solar & solar & $\alpha$-enh. & $\alpha$-enh. & $\alpha$-enh. \\
Diffusion         &  no &  yes & no & yes & yes \\
\hline
\end{tabular}
\end{table}