\begin{table}%t2
\caption{\label{tab2}3.5--10.5~keV continuum and Fe emission line parameters.}
\par
%\centerline
{\small
\begin{tabular}{ccccccc}
\hline\hline
N$^{\circ}$ & $\Gamma$    & Energy$^1$ & {\it EW}$^2$     & Flux$^3$   & $\chi^2/\nu$ & $\Delta\chi^2$ \\
    &             & (keV)      & (eV)& &              &                \\
\hline
1 &  $1.55\pm0.03$ &  $6.37\pm0.03$ & $82\pm40$  &  3.0 & $924/850$ & 61\\
2 &  $1.60\pm0.03$ &  $6.41\pm0.04$ & $60\pm30$  & 3.8 & $992/991$ & 42\\
%3 &   $1.66\pm0.1$  &  $\equiv$6.4       & $<$75           & 3.5 & $180/186$ &  2\\
4 &  $1.70\pm0.02$ &  $6.41\pm0.02$ & $65\pm20$  & 3.5 & $1151/1194$ & 130\\
5 &  $1.72\pm0.03$ &  $6.41\pm0.03$ & $62\pm28$  & 3.6 & $990/1012$  & 67\\
6 &  $1.69\pm0.02$ &  $6.43\pm0.03$ & $58\pm20$  & 4.2 & $1175/1189$ & 101\\
\hline
\end{tabular}}
\par
\medskip
 $^1$ Emission line rest-frame energy centroid, in units of keV; $^2$~Emission line rest-frame equivalent width, in units of eV. The width of the line was fixed to $\sigma=0.1$~keV (see text for details); $^3$ 2--10~keV flux in units of 10$^{-11}$ erg~s$^{-1}$~cm$^{-2}$.
\end{table}