\begin{table}%t5
%\centering
\par
\caption{\label{tab5} Group dynamical properties. $\sigma_{r}$, $R$, and $H_{\rm 0}t_{\rm c}$ are
expressed in logarithmic values; mass,
luminosity, and mass-to-light ratio are given in solar units. The symbols follow Hickson et~al. (\cite{Hickson1992}).}
\begin{tabular}{c c c c c c c c} \hline\hline
Group name   &   Scale     & $\sigma_{r}$ & log($R$) & $H_{0}t_{\rm c}$ & $M$                    & $L$                          & $M/L$   \\ 
             &(kpc/$\arcmin$) & (\kms)   & (kpc)  &                             & $M_{\rm \odot}$    & $L_{\rm \odot}$           &       \\ \hline\noalign{\smallskip}
PCG~100355+190454 &  123.44     & 1.89          & 1.71   & --1.478                & $(1.4\pm0.3)\times 10^{12}$ & $(1.4\pm0.1)\times 10^{11}$   & 9  \\
PCG~101345+194541 &  136.57     & 2.49          & 1.67   & --2.133                & $(1.3\pm0.2)\times 10^{13}$ & $(1.13\pm0.09)\times 10^{11}$ & 108   \\
PCG~103959+274947 &  114.70     & 2.36          & 1.46   & --2.203                & $(4.5\pm0.8)\times 10^{12}$ & $(7.5\pm0.6)\times 10^{10}$   & 55 \\
PCG~110941+203320 &  155.3      & 2.22          & 1.79   & --1.733                & $(6\pm2)\times 10^{12}$     & $(1.11\pm0.08)\times 10^{11}$ & 48 \\
PCG~114233+140738 &  142.06     & 2.49          & 1.48   & --2.315                & $(1.0\pm0.3)\times 10^{13}$ & $(1.4\pm0.1)\times 10^{11}$   & 63 \\
PCG~114333+215356 &  147.31     & 1.91          & 1.61   & --1.606                & $(1.3\pm0.2)\times 10^{12}$ & $(1.8\pm0.1)\times 10^{11}$   & 6 \\
PCG~121252+223519 &  101.06     & 2.01          & 1.47   & --1.845                & $(1.6\pm0.4)\times 10^{12}$ & $(1.05\pm0.08)\times 10^{11}$ & 13 \\
PCG~130157+191511 &   95.02     & 1.91          & 1.50   & --1.715                & $(7\pm2)\times 10^{11}$     & $(6.3\pm0.4)\times 10^{10}$   & 10 \\
PCG~130926+155358 &  162.78     & 2.21          & 1.97   & --1.552                & $(8\pm2)\times 10^{12}$     & $(1.5\pm0.1)\times 10^{11}$   & 47 \\
PCG~145239+275905 &  142.45     & 2.39          & 1.77   & --1.920                & $(1.2\pm0.3)\times 10^{13}$ & $(6.9\pm0.5)\times 10^{10}$   & 149 \\
PCG~161754+275834 &  141.46     & 2.13          & 1.73   & --1.703                & $(3.4\pm0.9)\times 10^{12}$ & $(1.24\pm0.09)\times 10^{11}$  & 24 \\ \hline
\end{tabular}
\end{table}