\begin{table}%t1
%%\centering
\par
\caption{\label{t:optiona}Fraction of mass ($\alpha$) lost by less evolved stars assuming a maximum
polluter mass of $8~M_\odot$.}
\begin{tabular}{ccccc}
\hline\hline
\noalign{\smallskip}
 \multicolumn{5}{c}{$M_{\rm min}=4~M_\odot$} \\
\hline
  $x$& Mass fraction    & Mass fraction   & $\alpha$ & Original ratio \\
     & in stars of      & in stars of     &          & 1st gen./GC    \\
     & 0.2--4 $M_\odot$  & of 4--8 $M_\odot$&          &                \\
--2.9   &     0.948        &	0.025      &0.0208    &    16.9 \\
--2.6   &     0.875        &	0.050      &0.045     &     8.5 \\
--2.3   &     0.727        &	0.083	   &0.090	  &  	5.1 \\
--2.0   &     0.502        &	0.108      &0.170	  &	    3.9 \\
Kroupa &     0.845        & 0.0053     &  0.00489 &     7.0  \\
\hline
 \multicolumn{5}{c}{$M_{\rm min}=5~M_\odot$} \\
  $x$& Mass fraction    & Mass fraction   & $\alpha$ & Original ratio \\
     & in stars of      & in stars of     &          & 1st gen./GC    \\
     & 0.2--5 $M_\odot$  & of 5--8 $M_\odot$&          &                \\
\hline
--2.9   &     0.959        &	0.0146     &0.0126    &    27.6 \\
--2.6   &     0.895        &	0.030      &0.0279    &    13.4 \\
--2.3   &     0.758        &	0.052	   &0.057	  &  	7.7 \\
--2.0   &     0.540        &	0.070      &0.108	  &	    5.7 \\
Kroupa &     0.864        & 0.035      &0.0331    &    10.9 \\
\hline
 \multicolumn{5}{c}{$M_{\rm min}=6~M_\odot$} \\
  $x$& Mass fraction    & Mass fraction   & $\alpha$ & Original ratio \\
     & in stars of      & in stars of     &          & 1st gen./GC    \\
     & 0.2--6 $M_\odot$  & of 6--8 $M_\odot$&          &                \\
\hline
--2.9   &     0.965        &	0.0086	   &0.0070     &   49.4 \\
--2.6   &     0.912        &	0.0182	   &0.0158     &   23.3 \\
--2.3   &     0.778        &	0.032      &0.0328     &   13.1 \\
--2.0   &     0.565        &	0.045      &0.062	   &	9.5 \\
Kroupa &     0.878        & 0.021      &0.0181     &   19.8  \\
\hline
 \multicolumn{5}{c}{$M_{\rm min}=7~M_\odot$} \\
  $x$& Mass fraction    & Mass fraction   & $\alpha$ & Original ratio \\
     & in stars of      & in stars of     &          & 1st gen./GC    \\
     & 0.2--7 $M_\odot$  & of 7--8 $M_\odot$&          &                \\
--2.9   &     0.971	      &	0.0037	   &  0.0030   & 117.1  \\
--2.6   &     0.917	      &	0.0080	   &  0.0065   &  55.6  \\
--2.3   &     0.736	      &	0.0147	   &  0.0138   &  30.3  \\
--2.0   &     0.589	      &	0.0207 	   &  0.0262   &  21.5  \\
Kroupa &     0.889        & 0.0102     &  0.00715  &  48.8  \\
\hline
\end{tabular}
\end{table}