\begin{table}%T4
\par
\caption{\label{fitspectral}Spectral characteristics of the different stacks. }
\small%\centerline
{
\begin{tabular}{ccll}
\hline\hline
Class   &  $N$ & log(age yr) & $\log(M_{\star}/M_{\odot})$  \\
\hline 
Coma blue        & 15   &     $\rm 9.13_{+0.60}^{-0.31}$   &   $\rm 6.21_{+0.19}^{-0.14}$           \\ 
Coma red         & 11   &     $\rm 9.78_{+0.23}^{-0.30}$   &   $\rm 6.93_{+0.20}^{-0.21}$	               \\ 
Coma RS          & 25   &     $\rm 9.53_{+0.38}^{-0.36}$   &   $\rm 6.66_{+0.22}^{-0.20}$                \\ 
Coma non X           & 36   &    $\rm 9.51_{+0.39}^{-0.35}$  &   $\rm 6.64_{+0.22}^{-0.20}$                   \\ 
Coma X       & 28   &    $\rm 9.46_{+0.39}^{-0.32}$   &    $\rm 6.50_{+0.21}^{-0.17}$                    \\ 
Coma LSB         &  7  &      $\rm 9.48_{+0.41}^{-0.38}$   &   $\rm 6.62_{+0.25}^{-0.23}$               \\ 
Coma abs         &  31  &     $\rm 9.51_{+0.37}^{-0.33}$     & $\rm 6.66_{+0.20}^{-0.18}$                   \\ 
Coma abs $R>22$ &  15  &   $\rm 9.41_{+0.42}^{-0.33}$   & $\rm 6.39_{+0.20}^{-0.17}$	               \\
Coma abs $ R\leq22$ &  16  &    $\rm 9.63_{+0.32}^{-0.37}$    & $\rm 7.07_{+0.26}^{-0.27}$                   \\ 
Coma em+abs      & 26   &      $\rm9.45  _{+0.40}^{-0.33}$    &  $\rm 6.45_{+0.21}^{-0.18}$                 \\ 
Coma em+abs $R>22$ & 18   &   $\rm 9.47_{+0.39}^{-0.33}$   &  $\rm 6.39_{+0.22}^{-0.19}$                       \\ 
Coma em+abs $R\leq22$ &  8  &    $\rm 9.46_{+0.44}^{-0.44}$   &  $\rm 6.93_{+0.28}^{-0.29}$                 \\ 
Coma em          & 4   &     $\rm 9.17_{+0.60}^{-0.38}$   &  $\rm 6.48_{+0.24}^{-0.22}$                     \\ 
Non Coma abs         & 44   &       9.48 $\rm _{+0.40}^{-0.35}$     &  /              \\ 
Non Coma abs $R>22$ &  31  &   9.50 $\rm _{+0.40}^{-0.37}$     &    /                  \\ 
Non Coma abs $R\leq22$ &  13  &    $\rm 9.29_{+0.57}^{-0.59}$      &   /                   \\ 
Non Coma em+abs      &  39  &      $\rm 9.12_{+0.67}^{-0.36}$     &   /                    \\ 
Non Coma em+abs $R>22$ & 25   &     $\rm 9.20_{+0.62}^{-0.41}$	   &  /                          \\ 
Non Coma em+abs $R\leq22$ & 14   &     $\rm9.07  _{+0.73}^{-0.45}$     &   /                  \\ 
Non Coma em          &  4  &     $\rm 9.05_{+0.81}^{-0.68}$       &   /                   \\ 
Non Coma LSB         &  4  &     $\rm 9.76_{+0.28}^{-0.39}$        &  /                   \\ 
\hline
\end{tabular}}
\smallskip
Class is described
  in the text. $N$ is the number of individual
galaxies in each class providing a clean spectrum. Log(age yr) is the
logarithm of the stellar population age expressed in years. $\log(M_{\star}/M_{\odot})$
is the logarithm of the stellar mass in solar unit.
\end{table}