\begin{table}%t2
\caption{\label{tab:averages}Best fit model parameters for the 15 AGN (present work). In the case of sources with multiple pointings, 
the weighted averages are shown. Since PKS~$2155-304$ (3EG~J$2158-3023$) is best fitted in 4 pointings with the 
broken power law model and in the remaining 5 with the simple power law model; we reported the averages of both models.
Columns: (1) name of the source; (2) absorbing column density [$10^{20}$~cm$^{-2}$]; (3) photon index
$\Gamma$, if the best fit is a simple power law model or soft photon index $\Gamma_1$, if the best fit
model is a broken power law; (4)~hard photon index $\Gamma_2$ for the broken power law model; (5) break energy~[keV].}
\small%\centering
\par
\begin{tabular}{lcccc}
\hline\hline
Name         & $N_{\rm H}$     & $\Gamma$/$\Gamma_1$    & $\Gamma_2$             & $E_{\rm break}$ \\
(1)          & (2)             & (3)                    & (4)                    & (5)             \\
\hline\noalign{\smallskip}
$0219+428$    & Gal.            & $\rm 2.91_{-0.08}^{+0.12}$ & $\rm 2.23_{-0.09}^{+0.10}$ & $1.3\pm 0.2$\\
AO~$0235+164$ & Gal.            & $2.33\pm 0.04$         & $2.1\pm 0.1$           & $\rm 3.3_{-0.5}^{+0.7}$\\\noalign{\smallskip}
PKS~$0521-365$& Gal.            & $1.95\pm 0.03$         & $1.74\pm 0.03$         & $\rm 1.5_{-0.2}^{+0.3}$\\\noalign{\smallskip}
S5~$0716+714$ & Gal.            & $2.70\pm 0.02$         & $\rm 1.98_{-0.09}^{+0.08}$ & $\rm 2.3_{-0.1}^{+0.2}$\\\noalign{\smallskip}
S5~$0836+710$ & $14\pm 3$       & $1.379\pm 0.007$       & $-$                    & $-$\\
Mkn~$421$     & Gal.            & $2.38\pm 0.09$         & $2.7\pm 0.2$           & $2.7\pm 1.0$\\
PKS~$1127-145$& $\rm 12_{-1}^{+2}$  & $\rm 1.40_{-0.05}^{+0.08}$ & $1.22\pm 0.06$         & $\rm 2.7_{-0.8}^{+1.0}$\\\noalign{\smallskip}
ON~$231$      & $2.5\pm 0.6$    & $2.77\pm 0.04$         & $-$                    & $-$\\
3C~$273$      & Gal.            & $2.02\pm 0.08$         & $1.67\pm 0.05$         & $1.44\pm 0.08$\\
Cen~A         & $1523\pm 261$   & $2.22\pm 0.06$         & $-$                    & $-$\\
PKS~$1334-127$& $6.7\pm 0.9$    & $1.80\pm 0.04$         & $-$                    & $-$\\
PKS~$1406-076$& Gal.            & $1.59\pm 0.01$         & $-$                    & $-$ \\\noalign{\smallskip}
NGC~$6251$    & $14\pm 1$       & $\rm 2.11_{-0.06}^{+0.08}$ & $1.78\pm 0.07$         & $\rm 2.5_{-0.4}^{+0.3}$\\\noalign{\smallskip}
PKS~$1830-211$& $63\pm 1$       & $1.00\pm 0.09$         & $1.32\pm 0.06$         & $3.5\pm 0.7$\\
PKS~$2155-304$ & $1.69\pm 0.06$  & $2.9\pm 0.1$           & $-$                    & $-$ \\
{}             & Gal.            & $2.7\pm 0.1$           & $2.94\pm 0.06$         & $2.7\pm 0.7$ \\
\hline
\end{tabular}
\end{table}