\begin{table}%T4
\caption{Soft excess: fits of the LECS, MECS, PDS data and comparison 
with {\it XMM-Newton} data. A stands for photoelectric absorption, 
{\sc pexrav} for the Compton reflection from cold material, G for a 
Gaussian line and BB for a black body. We first consider the spectra
above 2~keV, freezing all the parameters of the continuum ($\Gamma$,
$R$, $E_{\rm c}$) to their best fit value of Table~\ref{Tab3}. We then
add the data below 2~keV, add a soft excess component, and fit again 
the broad-band spectrum.}\label{Tab4}
%\begin{center}
{
%\addtolength{\tabcolsep}{-2pt}
\begin{tabular}{llcccc}
\hline
\hline
%\rule[-0.5em]{0pt}{1.6em}
Obs.&Model & $N_{\rm H}$ & $kT_{\rm{BB}}$ & $\chi^2$(d.o.f.) & Proba.  \\    
\hline
%\rule[-0.5em]{0pt}{1.6em}
 && 10$^{20}$~cm$^{-2}$ & eV && \\
\hline
{\it BeppoSAX} 2001&A+PEXRAV+G+BB & $\rm 3.60^{+0.50} _{-0.31}$ & $\rm 100.00^{+\it u} _{-99.90}$ & 137.40(140) & 0.546\\
\hline
{\it XMM} 2000&A+PEXRAV+G+BB    & ${<}3.14^p$ & $\rm 164.86^{+4.85} _{-8.57}$ & 325.09(231)
&$<$0.001 \\
\hline 
\end{tabular}}
\parbox{14cm}{
$^u$ Unbounded parameters.\\
$^p$ Pegged at Galactic value $N_{\rm H}=2.90\times10^{20}$~cm$^{-2}$. }
%\end{center}
\par
\end{table}