\begin{table}%t1
\caption{\label{2spectra_fit}Best-fit spectral parameters for the phase-resolved spectroscopy of \RX, in the case of the independent fit of the two spectra.}
\par
%\centerline
{
\begin{tabular}{c|cc|cc|cc} \hline\hline
Phase interval		&	A		&	B		&	A		&	B			&	A			&	B			\\ \hline
$N_{\rm H}$		& 6.6 $\pm$ 0.7		& $\rm 6.6^{+1.5}_{-1.3}$	& 0.5 $\pm$ 0.3		& $\rm 0^{+0.8}_{-0.0}$		& $\rm 2.1^{+1.4}_{-1.1}$		& $\rm 0.9^{+0.9}_{-0.8}$		\\ \hline
$\Gamma$		& 1.01 $\pm$ 0.06	& 0.79 $\pm$ 0.10 	&			&				& $\rm 0.4^{+0.5}_{-1.0}$		& $\rm -2.5^{+0.3}_{-0.2}$		\\
$f_{\rm PL}^{a}$	& 4.8 (100 \%)		& 5.5 (100 \%)		&			&				& 2.0 (51 \%)			& 1.5 (31 \%)			\\ \hline
$kT_{\rm BB}$ (keV)	&			&			& 1.45 $\pm$ 0.03	& $\rm 1.69^{+0.06}_{-0.08}$	& $\rm 1.22^{+0.18}_{-0.09}$	& $\rm 1.44^{+0.12}_{-0.22}$	\\
$R_{\rm BB}$ (m)	& 			&			& 139 $\pm$ 6		& $\rm 117^{+9}_{-6}$		& $\rm 142^{+29}_{-24}$		& $\rm 141^{+11}_{-13}$		\\
$f_{\rm BB}^{a}$	&			&			& 3.4 (100 \%)		& 4.1 (100 \%)			& 1.9 (49 \%)			& 3.4 (69 \%)			\\ \hline
$f_{\rm TOT}^{a}$	& 4.8			& 5.5			& 3.4			& 4.1				& 3.9				& 4.9				\\ 
$\chi^{2}_{\nu}$/d.o.f.	& 2.00/80		& 1.50/33		& 1.45/80		& 1.17/33			& 1.05/78			& 0.80/31			\\
$P_{\rm F-test}(PL)$	&			&			&			&				& 4.79$\times 10^{-12}$		& 2.15$\times 10^{-5}$		\\
$P_{\rm F-test}(BB)$	&			&			&			&				& 1.33$\times 10^{-6}$		& 1.10$\times 10^{-3}$		\\ \hline
\end{tabular}}
\par
\medskip
$^{a}$ Unabsorbed flux in the energy range 0.2--10 keV, in units of $10^{-12}$ erg cm$^{-2}$ s$^{-1}$. 
\end{table}