\begin{table}%t7
%\centering
\par
\caption {\label{table.t}Comparison between the indices predicted by the linear fit
to the data at $\sigma=200$~km~s$^{-1}$ and the ones predicted -- at the
same velocity dispersion-- in a passively evolving model with formation redshifts
of $z_{\rm f}=1.4$, $z_{\rm f}=2$, and $z_{\rm f}=3$.  Column~3 shows the predicted
value by  the linear  fit at  $\sigma=200$~km~s$^{-1}$, Col.~4  the
standard  deviation among    the  relation;  Cols.~5, 7, and~9 show  the   value
predicted by the  model with redshift formations of 1.4, 2, and 3~respectively.
Columns~6, 8, and~10  shows the $t$-parameter
of comparing   these two  values (fitted and predicted)  using a Student's $t$-test.  A  $t$~value higher   than~1.96 would
indicate that  the probability  that the two  values are different by chance
is less than~5\% (for samples larger than~40 and~6\% for smaller samples).  As can be seen, none of the 
values show significant
differences from the model.}
\begin{tabular}{rr  rr rr rrrr}
\hline\hline
          &    & \multicolumn{2}{c}{Linear fit}&\multicolumn{2}{c}{$z_{\rm f}=1.4$} &\multicolumn{2}{c}{ $z_{\rm f}=2$} 
&\multicolumn{2}{c}{ $z_{\rm f}=3$}\\
Index         & Redshift &  @200~km~s$^{-1}$        & $\sigma$  &  @200~km~s$^{-1}$    & $t$&  @200~km~s$^{-1}$ &  $t$  &  @200~km~s$^{-1}$ & $t$  \\
\hline 
Fe4383          & 0.02    &$ 4.70$ & 0.41  & $  4.09$ & 1.5  &      $ 4.33$      & 0.9&  $ 4.38$  &  0.8\\ 
                & 0.45    &$ 3.58$ & 0.82  & $  3.39$ & 0.2  &      $ 3.57$      & 0.0&  $ 3.65$  &  0.1\\
                & 0.55    &$ 3.73$ & 0.38  & $  3.06$ & 1.7  &      $ 3.40$      & 0.8&  $ 3.47$  &  0.8\\  
                & 0.75    &$ 2.77$ & 1.24  & $  2.56$ & 0.2  &      $ 3.19$      & 0.3&  $ 3.34$  &  0.4\\
H$\delta$A      & 0.02    &$-1.40$ & 0.79  & $ -1.37$ & 0.0  &      $-1.85$      & 0.6&  $-1.93$  &  0.7\\
                & 0.45    &$-0.23$ & 1.12  & $ -0.08$ & 0.1  &      $-0.47$      & 0.2&  $-0.64$  &  0.4\\ 
                & 0.55    &$ 0.09$ & 1.09  & $  0.58$ & 0.4  &      $-0.02$      & 0.1&  $-0.26$  &  0.3\\
                & 0.75    &$ 0.63$ & 1.10  & $  1.54$ & 0.8  &      $ 0.33$      & 0.3&  $ 0.05$  &  0.5\\
H$\gamma$F      & 0.02    &$-1.48$ & 0.44  & $ -0.86$ & 1.4  &      $-1.09$      & 0.9&  $-1.13$  &  0.8\\
                & 0.45    &$-0.61$ & 0.66  & $  0.10$ & 1.1  &      $-0.36$      & 0.4&  $-0.48$  &  0.2\\
                & 0.55    &$-0.48$ & 0.66  & $  0.31$ & 1.1  &      $-0.09$      & 0.6&  $-0.21$  &  0.4\\
                & 0.75    &$0.04$  & 0.97  & $  0.96$ & 0.9  &      $ 0.16$      & 0.12& $-0.04$  &  0.0\\
\hline
\end{tabular}
\end{table}