\begin{table}%t3 \caption{\label{numball}Number of Mg~{\sc ii} systems and redshift paths.} %\centering \par \begin{tabular}{lccc} \hline \hline &&& \\[-8pt] $W_{\rm r}(\lambda2796)$ & $>$0.3~\AA & $>$1~\AA & $>0.3$ and $<$1 \AA \\ \hline $\langle z_{\rm abs}\rangle$&1.34&1.11&1.57\\ \hline Redshift path & 13.79 & 13.94 & 13.79 \\ \hline &&& \\[-8pt] $N^{\rm MgII}_{\rm obs}$ (UVES sample)& 18 & 9 & 9 \\ &&& \\[-8pt] \hline &&& \\[-8pt] $N^{\rm MgII}_{\rm exp}$&$11.98~(\pm3.46 $)&$4.83~(\pm2.20$)&$7.21~(\pm2.68 $)\\ \citep{Nestor2005} &&&\\ \hline &&& \\[-8pt] $N^{\rm MgII}_{\rm exp}$&&$4.00~(\pm2.00$)&\\ (Prochter et al. 2006) &&&\\ \hline \end{tabular} \end{table}