\begin{table}%t2
\caption{\label{tab2}Radial velocities of member galaxies in groups ShCG~8, ShCG~14, 
ShCG~19, and ShCG~22.}
%\centering
\par
\begin{tabular}{rl|cl|cl|cl}
\hline\hline
\multicolumn{2}{c|}{ShCG 8} & \multicolumn{2}{|c|}{ShCG 14} &
\multicolumn{2}{|c|}{ShCG 19} & \multicolumn{2}{|c}{ShCG 22} \\
$g$ & $v_{\rm rad}$     & $g$  & $v_{\rm rad}$  & $g$ & $v_{\rm rad}$  & $g$ & $v_{\rm rad}$ \\
  & [km s$^{-1}$] & & [km s$^{-1}$] & & [km s$^{-1}$]  & & [km s$^{-1}$] \\
\hline
1  & 33~200   & 1    & 21~710    & 1 & 20~020   & 1 & 24~590  \\
2  & 33~400 e & 2    & 22~730 e  & 2 & 21~040   & 2 & 24~620  \\
3  & 10~200 e & 3    & 21~770    & 3 &  star   & 3 & 24~620 e \\
4  & 32~800   & 4    & 21~950    & 4 & 21~040 e & 4 & 25~100  \\
5  & 32~800   & 5    & 22~850 e  & 5 & 20~380   &   &        \\
6  & 33~000   & 6    & 22~790    &   &         &   &        \\
7  & star    & 7    & 22~520    &   &         &   &        \\
\hline
\end{tabular}
\end{table}