\begin{table}%t7
\par
\caption {Results derived from optical data. Column~(1): cluster name; Col.~(2): total luminosity derived from stars within galaxies; Col.~(3): fraction of star forming galaxies; Col.~(4): stellar mass; Col.~(5): ICL mass; Col.~(6): stellar and ICL mass to gas mass fraction.\label{StarMass}}
%\centerline
 {\begin{tabular}{c c c c c c}
\hline\hline
Cluster &   $L_{\rm star}$  ($10^{14}~ L_{\odot}$)& $f_{\rm s}$ & $M_{\rm star}$ ($10^{14} ~M_{\odot}$)&  $M_{\rm ICL}$& $M_{\rm star+ICL}/M_{\rm gas}$ \\
        & ($< $$r_{500}$)  & ($<$$ r_{500}$) & ($<$$ r_{500}$)&  ($<$$ r_{500}$)& ($<$$ r_{500}$) \\
\hline
A496  &  0.0233 $\pm$ 0.0021 & $0.20^{\ast}$ & 0.0351 $\pm$ 0.0066  & 0.0040 & 0.118  $\pm$ 0.020   \\
A1689 &  0.0599 $\pm$ 0.0023 & 0.15          & 0.0903 $\pm$ 0.020   & 0.010  & 0.060  $\pm$ 0.012   \\
A2050 &  0.0367 $\pm$ 0.0010 & 0.20          & 0.0553 $\pm$ 0.0015  & 0.062  & 0.108  $\pm$ 0.040  \\
A2631 &  0.0509 $\pm$ 0.0041 & 0.20          & 0.0768 $\pm$ 0.0062  & 0.0087 & 0.102  $\pm$ 0.022  \\
A2667 &  0.160  $\pm$ 0.046 & $0.20^{\ast}$  & 0.240  $\pm$ 0.073   & 0.027  & 0.237  $\pm$ 0.029 \\
\hline	
\end{tabular}}
\smallskip
 $^\ast$ Not measured.
\end{table}