\begin{table}%t2
\caption{Results from the  spectral fitting in the $0.3{-}11$~keV
energy band assuming fixed Galactic $N_{\rm H} = 6.4$~$\times$ $10^{20}$~cm$^{-2}$.}\label{tab2} 
%\centering
\small
\begin{tabular}{lcc}
\hline \hline 
% & & \\[-8pt]
Model & $\chi^{2}_{\rm{red}}$/d.o.f. (PN) & $\chi^{2}_{\rm{red}}$/d.o.f. (MOS)\\
% & & \\[-8pt]
\hline
BASELINE+PL  & 11.85/1174 & 2.66/753\\
BKN PL & 4.84/1173 & 1.98/758 \\
2~BKN PL & 1.52/1171 & 1.66/756 \\
BASELINE+BB  & 4.88/1173 & 4.76/753 \\
BASELINE+2~BBs &  1.29/1171  & 1.55/751 \\
BASELINE+BREMS & 1.35/1173 & 1.81/753 \\
\hline
\end{tabular}
\end{table}