\begin{table}%t7
\caption{H$\beta$ corrections for gradients.\label{table7}} 
%\centerline
{\small{
\begin{tabular}{lcccc}
\hline\hline
\multicolumn{1}{c}{Galaxy}
&\multicolumn{1}{c}{Aperture}
& \multicolumn{1}{c}{{\it EW}O[III]}
& \multicolumn{1}{c}{Quality}
& \multicolumn{1}{c}{{\it EW}H$\alpha$}
\\
 \hline         
    NGC~128 & 0 &  --0.317 &   1.000 &  --0.702 \\  
    NGC~128  &1 &  --0.204 &   1.000 &  --0.608 \\  
    NGC128 & 2 &  --0.173 &   2.000 &  --0.434 \\  
    NGC~128  & 3 &  0.119 &   0.000 &  --0.174  \\
    NGC~777  & 0 &   0.042 &  0.000 &  --0.124  \\
    NGC~777  & 1 &   0.057 &   0.000 &  --0.106 \\  
    NGC~777  & 2 &   0.045 &   0.000 &  --0.168 \\  
    NGC~777  & 3 &   0.162 &   0.000 &  --0.129 \\ 
     ....           & ... &   .....     &   .....     &  .....  \\
\hline
\end{tabular}}}
\par
\medskip
The table provides in Col.~2 the gradient, 
($0=0 \leq  r  \leq r_{\rm e}$/16, $1 = r_{\rm e}/16 \leq r \leq r_{\rm e}$/8, 
$2 = r_{\rm e} /8  \leq   r  \leq r_{\rm e}$/4 and $3 = r_{\rm e}/4
 \leq r \leq r_{\rm e}$/2), 
and the estimate of the {\it EW} of the O[III] and H$\alpha$ (Cols.~3 and~5
respectively) obtained from the subtraction of  the template galaxy, NGC~1426. 
Column~4 gives the quality of the measure, obtained as the ratio between the
estimated emission ($F_{\rm gal} - F_{\rm templ}$) and the variance
of the spectrum in the O[III] wavelength region, $\sigma_\lambda$. 
When the emission is lower than the variance the quality is set to~0. 
When the emission is between~1 and 2~$\sigma_\lambda$ or larger than 2~$\sigma_\lambda$
the quality is set to~1 and~2~respectively. 
The entire table is given in electronic form at the CDS.
\end{table}