\begin{table}%t3
\caption{\label{sysred}Blueshift of the \ion{C}{iv} line relative to the systemic redshift~$z_{\rm sys}$ for the three quasars from our sample with secured [\ion{O}{iii}]~line \mbox{measurement}.}
\par
%\centering
\par
\begin{tabular}{l l l l}     
\hline\hline \noalign{\smallskip}
BAL QSO Name & $z_{\rm sys}$ & Ref. $z_{\rm sys}$ & $\Delta {v_{\rm blueshift}}$\\
\hline \noalign{\smallskip}
 Q0019+0107 & 2.131 & Dietrich et~al. (\cite{di09}) & 5500 $\rm{km}~s^{-1}$\\
 Q0226-1024 & 2.268 & McIntosh et~al. (\cite{mc99})  & 9200 $\rm{km}~s^{-1}$\\
 Q1413+1143 & 2.553 & Hutsem\'ekers et~al. (\cite{hu09})  & 2500 $\rm{km}~s^{-1}$\\
\hline
\end{tabular}
\vspace*{5mm}
\end{table}