\begin{table}%t6
%\centering
\par
\caption{Updated properties of the groups showing substructure.}\label{tab:colour_update}
$$ \begin{tabular}{rlrrrrrrlr}
\hline\hline \noalign{\smallskip}
Id & Cluster & $\alpha$ (J2000) & $\delta$ (J2000) & \#mem & $z_{\rm MF}$ & $z_{\rm spec}$ &
\multicolumn{2}{c}{$\sigma_v~\left[{\rm km~s}^{-1}\right]$} \\
\hline
3 & EISJ0047-2942 &  00:47:17.4 & --29:42:33 & 4 & 0.4 & 0.532 &  251 & $^{+109 }_{-101 }$\\
5 & EISJ0049-2920 &  00:49:31.7 & --29:20:33 & 7 & 0.3 & 0.189 & 248 & $^{+116}_{-112}$ \\
%\vspace{1mm}
6 & EISJ2236-3935 &  22:35:59.9 & --39:36:45 & 6  & 0.3 & 0.161 &  $284$ & $^{+258}_{-169}$  \\
9 & EISJ2237-4000 &  22:37:11.3 & --40:00:23 & 8 & 0.3 & 0.195 & $ 350$ & $^{+225}_{-171}$   \\
10 & EISJ2238-3934 &  22:38:06.3 & --39:34:03 & 13 & 0.3 & 0.240 &  $497$ & $^{+55}_{-148}$  \\
10 & EISJ2238-3934 &  22:37:54.0 & --39:35:51 & 10 & 0.3 & 0.249 &  $357$ & $^{+55}_{-99}$  \\
\hline
\end{tabular}
$$
\end{table}