\begin{table}%t7 \caption {\label{tab7}Stellar mass estimate for clusters older than 50~Myr.} \par %\centerline {\begin{tabular}{ccccccccccc} \hline\hline &&\multicolumn{6}{c}{Observed in CMD}&&\multicolumn{2}{c}{Extrapolated}\\ \cline{3-8}\cline{10-11} Cluster&&$\Delta~m_{\rm MS}$&$\chi$&$N_{\rm MS}$&$M_{\rm MS}$ &$N_{\rm evol}$&$M_{\rm evol}$ &&$N$&$M$\\ && ($M_\odot$) & &(stars) &($M_\odot$)&(stars) &($M_\odot$)&&(stars) &($M_\odot$) \\ (1)&&(2)&(3)&(4)&(5)&(6)&(7)&&(8)&(9)\\ \hline FSR~735&&0.55--2.90&$1.21\pm0.11$&$111\pm14$&$164\pm20$&$5\pm1$&$15\pm3$&&$1200\pm889$&$467\pm166$\\ FSR~852&&0.65--2.10&$2.59\pm0.46$&$132\pm19$&$152\pm22$&$4\pm6$&$8\pm12$&&$2710\pm2190$&$836\pm409$\\ FSR~953&&0.85--2.50&$2.41\pm0.29$&$108\pm14$&$178\pm21$&$8\pm3$&$16\pm6$&&$5020\pm3850$&$1670\pm719$\\ Cz~22~~&&1.30--3.90&$0.87\pm0.20$&$60\pm10$&$135\pm21$&$5\pm3$&$15\pm11$&&$1790\pm1290$&$777\pm239$\\ FSR~941&&1.70--2.90&$0.67\pm0.12$&$147\pm13$&$350\pm31$&$40\pm15$&$106\pm39$&&$13800\pm10200$&$5480\pm1910$\\ NGC~2234&&0.95--6.75&$0.97\pm0.10$&$139\pm8$&$431\pm28$&$4\pm2$&$32\pm18$&&$2640\pm1860$&$1360\pm344$\\ \hline \end{tabular}} \par \tablefoot { Column~2: MS mass range. Column~3: MS mass function slope $\chi$, derived from the fit of $\phi(m)\propto{m}^{-(1+\chi)}$. Columns~4--7: stellar content of the MS and evolved stars. Columns~8--9: stellar content extrapolated to $0.08~M_{\odot}$. } \end{table}