\begin{table}%T3
\caption{Number of  stars
 with  $RV$ consistent or not (within $3\sigma$) with the cluster membership
  (indicated by $Y$ or $N$) and with or without 
Li (indicated by $Y$ or $N$).
 The total number for each criterion is also given.
The two binaries are specifically indicated in the given samples.}
\label{membership_tab}
%\tabcolsep 0.1truecm
%\centering
\small
\begin{tabular}{l|*{4}{c}}\hline\hline
\backslashbox{Li}{$RV$}
&\makebox[3em]{$Y$}&\makebox[3em]{$N$}&\makebox[3em]{Tot.}\\\hline 
$Y$       & 29	  & 26	    & 55	\\
$N$       & 10($9+1$) 	  & 48($47+1$)    & 58($56+2$)	\\
Tot.    & 39($38+1$)      & 74($73+1$)      & 113($111+2$)	\\\hline
\end{tabular}
\end{table}