\begin{table}%t8 \caption{\label{tab8}Stellar mass estimate for the clusters with PMS.} \par %\centerline {\begin{tabular}{cccccccccccc} \hline\hline \noalign{\smallskip} &&\multicolumn{4}{c}{MS}&&\multicolumn{2}{c}{PMS}&&\multicolumn{2}{c}{MS~+~PMS}\\ \cline{3-6}\cline{8-9}\cline{11-12} Cluster&&$\Delta~m_{\rm MS}$&$\chi$&$N$&$M$ &&$N$&$M$ &&$N$&$M$\\ && ($M_\odot$) & &(stars) &($M_\odot$)&&(stars) &($M_\odot$)&&(stars) &($M_\odot$) \\ (1)&&(2)&(3)&(4)&(5)&&(6)&(7)&&(8)&(9)\\ \hline FSR~807&&1.90--5.25&$-1.08\pm0.10$&$8\pm3$&$25\pm10$&&$21\pm6$&$45\pm14$&&$29\pm9$&$70\pm24$\\ FSR~812&&6.75--13.0&$-0.34\pm0.15$&$9\pm3$&$83\pm30$&&$33\pm12$&$135\pm35$&&$42\pm15$&$218\pm65$\\ FSR~826&&1.30--9.75&$1.07\pm0.12$&$46\pm9$&$178\pm31$&&$69\pm9$&$172\pm43$&&$115\pm18$&$350\pm74$\\ FSR~904&&1.50--11.0&$0.26\pm0.16$&$61\pm8$&$188\pm42$&&$443\pm31$&$706\pm61$&&$504\pm39$&$894\pm103$\\ FSR~955&&0.85--13.0&$0.22\pm0.09$&$4\pm2$&$20\pm7$&&$26\pm7$&$109\pm35$&&$30\pm9$&$129\pm42$\\ \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 PMS stars. Columns~8--9: total (MS+PMS) stellar content.} \end{table}