\begin{table}%t4
%%\centering
\par
\caption {\label{tab4}Stellar mass estimate for the clusters with PMS.}
\renewcommand{\tabcolsep}{3.9mm}
\par
\begin{tabular}{ccccccccccc}
\hline\hline
\noalign{\smallskip}
&&\multicolumn{3}{c}{MS}&&\multicolumn{2}{c}{{\rm PMS}}&&\multicolumn{2}{c}{MS~+~PMS}\\
\cline{3-5}\cline{7-8}\cline{10-11}
Cluster&&$\Delta~m_{\rm MS}$&$N$&$M$   &&$N$&$M$ &&$M_{\rm clus}$&$\rho$\\
&&($M_\odot$)&(stars)&($M_\odot$)&&(stars)&($M_\odot$)&&($M_\odot$) 
&$(\ms~\rm pc^{-3})$\\
(1)&&(2)&(3)&(4)&&(5)&(6)&&(7)&(8)\\
\hline
\multicolumn{11}{c}{Quality 1}\\
Teu~23 &&1.9--19.0&$19\pm5$&$121\pm27$&&$107\pm12$&$64\pm7$&&$185\pm28$&$1.48\pm0.22$\\
Teu~55 &&2.1--17.0&$17\pm4$&$92\pm29$&&$80\pm12$&$48\pm7$&&$140\pm30$&$0.10\pm0.02$\\
Teu~76 &&1.8--9.3 &$9\pm2$&$38\pm10$&&$27\pm5$&$16\pm3$&&$54\pm10$&$2.21\pm0.41$\\
Teu~132&&2.1--6.8 &$8\pm2$&$35\pm10$&&$39\pm7$&$23\pm4$&&$58\pm11$&$0.23\pm0.04$\\
\hline
\multicolumn{11}{c}{Quality 2}\\
Teu~45 &&2.3--11.0&$11\pm3$&$70\pm18$&&$24\pm6$&$14\pm4$&&$84\pm18$&$0.34\pm0.07$\\
\hline
\multicolumn{11}{c}{Quality 3}\\
Teu~39 &&2.7--9.8 &$10\pm2$&$57\pm16$&&$156\pm18$&$94\pm11$&&$151\pm19$&$0.56\pm0.07$\\
Teu~162&&1.7--7.8 &$11\pm3$&$47\pm13$&&$45\pm7$&$27\pm4$&&$77\pm14$&$1.05\pm0.19$\\
\hline
\end{tabular}
\tablefoot {
Column~2: MS mass range. Column 6: stellar content of the MS and PMS stars. Columns~8, 9: 
(MS+PMS) mass and density.}
\end{table}