\begin{table}%T2
\par
      \caption{\label{tab:coreparameter}Best-fitting parameters for the spectral fits of the core emission.         }
%\centerline
{
\begin{tabular}{ccccccccc}
            \hline \hline
                      Model$^{{(a)}}$      &  $N^{{(b)}}_{\rm H(gal.)}$  & $kT$ & $Z^{{(c)}}$ & $N^{{(d)}}_{\rm H(torus)}$  & $\Gamma^{{(e)}}$  & $F_{\rm abs}^{{(f)}}$ & $F_{\rm unabs}^{{(g)}}$ & $\chi^2_{\rm red}$ ($\chi^2$/d.o.f.) \\
                                      & {[10$^{22}$~cm$^{-2}$]}   &{[keV]}&   &{[10$^{22}$~cm$^{-2}$]}     &   &  [erg~s$^{-1}$~cm$^{-2}$] & [erg~s$^{-1}$~cm$^{-2}$] &     \\  \hline
       Ia & $\rm 0.66^{+0.07}_{-0.07}$& $\rm 0.44^{+0.07}_{-0.06}$& 1$^{*}$& $\rm 0.74^{+0.56}_{-0.39}$ & $\rm 0.30^{+0.10}_{-0.08}$ & $2.3\times 10^{-12}$ & $3.3\times 10^{-12}$ & 0.84 (15.9/19)\\
Ib  & $0.49^{*}$& $0.48^{*}$& 1$^{*}$& $\rm 0.54^{+0.46}_{-0.34}$ & $\rm 0.20^{+0.10}_{-0.08}$ & $2.3\times 10^{-12}$ &$ 2.9\times 10^{-12}$ & 0.76 (16.0/21) \\
Ic  & $0.49^{*}$& $0.48^{*}$& 0.25$^{*}$& $\rm 0.84^{+0.55}_{-0.39}$ & $\rm 0.28^{+0.09}_{-0.09}$ & $2.3\times 10^{-12}$ & $3.0\times 10^{-12}$ & 0.74 (15.8/21) \\
\noalign{\smallskip} 
IIa & $\rm 0.51^{+0.09}_{-0.04}$& $\rm 0.28^{+0.03}_{-0.04}$& 1$^{*}$& $\rm 0.45^{+0.59}_{-0.21}$ & $\rm 0.22^{+0.13}_{-0.05}$ & $2.5\times 10^{-12}$ & $3.4\times 10^{-12}$ & 0.89 (16.8/19) \\
IIb & $0.41^{*}$& $0.41^{*}$& 1$^{*}$& $\rm 0.62^{+0.46}_{-0.37}$ & $\rm 0.23^{+0.06}_{-0.09}$ & $2.3\times 10^{-12}$ & $2.8\times 10^{-12}$ & 0.77 (16.1/21)  \\
IIc & $0.41^{*}$& $0.41^{*}$& 0.25$^{*}$& $\rm 0.82^{+0.42}_{-0.42}$ & $\rm 0.27^{+0.07}_{-0.11}$ & $2.2\times 10^{-12}$ & $2.8\times 10^{-12}$ & 0.78 (16.4/21) \\
                      \hline
	  \end{tabular} }
\smallskip
$^*$ Fixed value;
$^{{a}}$ I: (R\&S + PL$^{\rm abs}$)$^{\rm abs}$, II: (M\&K + PL$^{\rm abs}$)$^{\rm abs}$, (R\&S$^{\rm abs}$: absorbed Raymond/Smith plasma, M\&K$^{\rm abs}$: absorbed Mewe/Kaastra plasma, PL$^{(\rm abs)}$: (absorbed) power--law;
$^{{b}}$~column density of the diffuse absorber;
$^{{c}}$~metallicity (referring to the solar value);
$^{{d}}$~column density of the compact absorber;
$^{{e}}$~photon index;
$^{{f}}$~absorbed X-ray flux between 0.2~keV and~8.0~keV;
$^{{g}}$~unabsorbed X-ray flux between 0.2~keV and~8.0~keV, i.e., $N^{{(b)}}_{\rm H(gal.)}$ and~$N^{{(d)}}_{\rm H(torus)}$ are set to~0.
\end{table}