\begin{table}%t4
%\centering
\par
\caption{\label{ab}Abundances derived for $\beta$~Sco~C~+~Ea expressed in term of $\log N({\rm el})/N_{\rm tot}$ compared with the solar values of \citet{asplund05}.}  
\small \begin{tabular}{l c c c}     
\hline \hline            
El & $\log N_{\rm el}/N_{\rm Tot}$ & $\log N_{\rm el}/N_{\rm Tot}$ & Sun \\
   & $\beta$~Sco~C & $\beta$~Sco~E \\
\hline
  C & $-$3.86~$\pm$~0.16 & $-$3.70~$\pm$~0.20 & $-$3.64\\
  N & $-$4.44~$\pm$~0.12 & $-$4.60~$\pm$~0.20 & $-$4.25\\
  O & $-$3.67~$\pm$~0.13 & $-$3.50~$\pm$~0.20 & $-$3.37\\
 Ne & $-$3.58~$\pm$~0.21 & $-$3.96~$\pm$~0.20 & $-$4.19\\
 Mg & $-$4.09~$\pm$~0.14 & $-$6.00~$\pm$~0.20 & $-$4.50\\
 Al & $-$5.83~$\pm$~0.06 & $-$6.50~$\pm$~0.20 & $-$5.66\\
 Si & $-$4.54~$\pm$~0.23 & $-$5.82~$\pm$~0.21 & $-$4.52\\
  P & $-$6.75~$\pm$~0.07 & $-$6.17~$\pm$~0.04 & $-$6.67\\
  S & $-$4.98~$\pm$~0.19 & $-$5.70~$\pm$~0.20 & $-$4.89\\
 Sc &      --            & $-$9.20~$\pm$~0.20 & $-$8.98\\
 Ti &      --            & $-$6.72~$\pm$~0.15 & $-$7.13\\
 Cr &      --            & $-$6.35~$\pm$~0.17 & $-$6.39\\
 Mn &      --            & $-$4.91~$\pm$~0.19 & $-$6.64\\
 Fe & $-$4.92~$\pm$~0.16 & $-$5.54~$\pm$~0.15 & $-$4.58\\
 Ni &      --            & $-$6.45~$\pm$~0.07 & $-$5.80\\
 Sr &      --            & $-$8.32~$\pm$~0.21 & $-$9.11\\
\hline  
\end{tabular}\vspace*{1.5mm}
\end{table}