\begin{table}%t2
\caption{\label{tab2}Composition effects on the large frequency separation, $\nu_{\ell=0,n=14}$ and $\nu_{\ell=0,n=27}$.}
%\centering
\small
     \begin{tabular}{p{0.15\linewidth}llllc}
        \hline\hline
        Metal        &  $T_{\rm eff}$ & $\Delta \nu$           &   $\nu_{\ell=0,n=14}$     &   $\nu_{\ell=0,n=27}$    & Model \\
        repartition  & {[K]}   & {[$\mu$Hz]}  &   {[$\mu$Hz]}   &   {[$\mu$Hz]}  &                 \\
        \& $\frac{\Delta Y}{\Delta Z}$           \\
    &&&& \\[-8pt]
\hline
        A05      \hspace{1.8cm}    $\frac{\Delta Y}{\Delta Z}=3$                 & 6610                    &    86.2            &  1270                                &   2403         & 3 \\ 
    &&&& \\[-8pt]    
 \hline
        GS98     \hspace{1.6cm}    $\frac{\Delta Y}{\Delta Z}=3$                 & 6230                    &    74.4            &  1160                                &   2139         & 4 \\ 
    &&&& \\[-8pt]   
 \hline
        A05      \hspace{1.8cm}    $\frac{\Delta Y}{\Delta Z}=1$                 & 6742                    &    90.8            &  1338                                &   2525         & 5 \\
        &&&& \\[-8pt]
 \hline
\end{tabular}
\end{table}