\begin{table}%t4
\caption{Fitted values of the parameters of simple  mass models (see text for details). For each model, the first (resp. second) line gives the results when fitting (resp. not fitting) the lens position (LF; resp. NLF). $\theta_{\rm E}$ is the angular Einstein radius, $\varepsilon$ the intrinsic ellipticity, $\gamma$ the external shear, $\theta_\varepsilon$ and $\theta_\gamma$ the position angles, $(\Delta_\alpha,\Delta_\delta)$ the differences between the modeled and the observed lens positions in $\alpha$ and in $\delta$.}
\label{tab:lensmod1}
%\centering
\small
\begin{tabular}{rc|cccccrccccc}
\hline \hline
\noalign{\smallskip}
Model &  & $\theta_{\rm E}('')$ & $\varepsilon$ & $\theta_\varepsilon$(PA) & $\gamma$ & $\theta_\gamma$(PA) & $\Delta_\alpha('')$ & $\Delta_\delta ('')$&$\chi_{\rm a}^2$/$\rm d.o.f._a$ & $\chi_{\rm e}^2$/$\rm d.o.f._e$ &d.o.f.$_{\rm a}$ & d.o.f.$_{\rm e}$\\
\noalign{\smallskip}
\hline
SIS + $\gamma$ &LF & 1.842& $-$ & $-$  & 0.145 & --73.9 & 0.021 & --0.052 & 190 & 42 & 3 &--  \\
               &NLF& 1.842 & $-$ & $-$ & 0.144 & --74.3 & 0.023 & --0.068 & 183 &  44 & 1 & 674\\
SIE & LF & 1.823 & 0.45 & --73.6 & $-$ & $-$ & --0.015 & --0.041 & 272 & 48 & 3 & --\\
    & NLF & 1.826 & 0.48 & --74.2 & $-$ &$-$ & --0.059 & --0.045 & 418 & 39 & 1 & 674\\
SIE + $\gamma$   & LF & 1.849 & 0.11 & --49.9 & 0.130 & --80.6 & 0.000 & --0.034 & 177 & 38 & 1 & --\\ 
   & NLF & 1.850 & 0.11 & --50.1 & 0.130 & --80.6 & 0.005 & --0.044 & 10 & 39 & 1 & 672\\ 
\hline
\end{tabular}
\end{table}