\begin{table}%t4
%\centering
\par
\caption {\label{aperture.corrections}Aperture correction for Lick/IDS indices measured in our sample.
The correction for the molecular indices and for the higher-order Balmer lines
  is additive while the correction for 
the atomic indices is multiplicative.  The aperture correction was only applied 
to the Coma galaxies, as it is very small for the other redshifts. 
The type of correction is indicated
in the last column.}
\begin{tabular}{rrrrrr}
\hline\hline
Index       & Coma          & $z=0.45$         & $z=0.55$            & $z=0.75$            &Correction type\\
\hline
H$\delta_{\rm A}$  & 1.031     &  0.063  &  0.016 &  0.00  & additive\\
CN$_1$       & $-0.083$  &$-0.005$ &$-0.001$& $0.00$ & additive\\
Ca4227       &  0.856    &  0.990  &  0.997 &  1.0   & multiplicative\\
G4300        & 0.914     &  0.995  &  0.998 &  1.0   & multiplicative\\
H$\gamma_{\rm F}$  & 0.623     &  0.038  &  0.009 &  0.0   & additiva\\
Fe4383       &  0.817    &  0.987  &  0.996 &  1.0   & multiplicative\\
Ca4455       & 0.726     &  0.980  &  0.995 &  1.0   & multiplicative\\
Fe4531       & 0.876     &  0.992  &  0.998 &  1.0   & multiplicative\\
C4668        & 0.676     &  0.976  &  0.994 &  1.0   & multiplicative\\
H$\beta$     & 1.179     &  1.010  &  1.000 &  1.0   & multiplicative\\
\hline
\end{tabular}
\end{table}