\begin{table}%t3
\caption{\label{tab:bwaqr_abund}Abundances ($[{\rm El./H}]$) for the primary and secondary
components of BW~Aqr determined from the two FEROS spectra.}
%\centerline
{\begin{tabular}{lrlrrlr} \hline
\hline\noalign{\smallskip}
             &  \multicolumn{3}{c}{Primary} & \multicolumn{3}{c}{Secondary} \\
Ion          &[El./H]&  rms& $N_{\rm t}$/$N_{\rm l}$&[El./H]& rms & $N_{\rm t}$/$N_{\rm l}$  \\
\noalign{\smallskip}
\hline
 Si\ione\     &$-0.12$& 0.02&  3/2  &$-0.05$& 0.12& 13/7 \\  %alpha   
 Ca\ione\     &$-0.18$& 0.13&  3/2  &$-0.00$& 0.09&  7/4  \\  %alpha    
 Sc\itwo\     &       &     &       &$-0.08$& 0.08&  3/2  \\            
 Ti\ione\     &$-0.02$& 0.09&  3/2  &       &     &      \\  %alpha   
 Cr\ione\     &$-0.12$& 0.17&  4/2  &$-0.04$& 0.12&  5/4\\  %          
 Fe\ione\     &$-0.11$& 0.16& 65/41 &$-0.05$& 0.11& 80/50   \\
 Fe\itwo\     &$-0.09$& 0.18& 14/8  &$-0.03$& 0.11& 14/8 \\
 Ni\ione\     &$-0.05$& 0.14& 18/11 &$-0.12$& 0.10& 15/10\\    %      
\noalign{\smallskip}
\hline
\end{tabular}}
\tablefoot{$N_{\rm t}$ is the total number of lines used per ion, and $N_{\rm l}$ is the number of different lines used per ion. Ions with at least 3 lines measured are included.}
\end{table}