\begin{table}%T7
\caption[]{\label{tab:v636cen_abund}
Abundances ($[\mathrm{El./H}]$) for the primary and secondary
components of V636~Cen determined from the two FEROS spectra.
}
%\begin{center}
\begin{tabular}{lllrllr} \hline
\hline\noalign{\smallskip}
             &  \multicolumn{3}{c}{Primary} & \multicolumn{3}{c}{Secondary} \\
Ion          &[El./H]&  rms& \textit{N}$_t$/\textit{N}$_l$&[El./H]& rms & \textit{N}$_t$/\textit{N}$_l$  \\
\noalign{\smallskip}
\hline
Si\ione\     &$-0.17$& 0.12& 15/15 &$-0.26$& 0.15&  3/3 \\  %alpha
Ca\ione\     &$-0.15$& 0.11& 11/9  &$-0.10$& 0.23& 12/9 \\  %alpha
Ti\ione\     &$-0.19$& 0.15&  5/5  &$-0.34$& 0.16&  8/6 \\  %alpha
Ti\itwo\     &$-0.22$& 0.10&  6/4  &       &     &    \\  %alpha
V\ione\      &$-0.27$& 0.04&  6/4  &$-0.15$& 0.17& 13/12 \\
Cr\ione\     &$-0.19$& 0.15&  6/4  &       &     &    \\
Cr\itwo\     &$-0.05$& 0.16&  6/5  &       &     &    \\
Fe\ione\     &$-0.19$& 0.09&136/110&$-0.11$& 0.19& 48/46 \\
Fe\itwo\     &$-0.20$& 0.08& 16/12 &       &     &    \\ 
Co\ione\     &$-0.15$& 0.15&  7/5  &       &     &    \\
Ni\ione\     &$-0.22$& 0.13& 39/25 &$-0.19$& 0.17& 12/9 \\
\hline
\end{tabular}            
%\end{center}
Note:
$N_t$ is the total number of lines used per ion, and \textit{N}$_l$ is the
number of different lines used per ion.
Ions with at least 3 lines measured are included.
\end{table}