\begin{table}%t5
%\centering
\par
\caption{Best fit parameters to EPIC data using a 3~components MEKAL
  model (Mewe et~al. \cite{Mewe85}) with variable abundance and a variable
  hydrogen column density.\label{tab5}}
\begin{tabular}{ c  c  c }
\hline
\hline
 & Rev. 107 & Rev. 200 \\
\hline
 $Z$ & 0.21 $\pm$ 0.02 & 0.20 $\pm$ 0.03 \\
\par
 $kT_{\rm 1}$ (keV) & 0.65 $\pm$ 0.02 & 0.66 $\pm$ 0.03 \\ 
 $EM_{\rm 1}$ (10$^{52}$ cm$^{-3}$) & 72 $\pm$ 10 & 62 $\pm$ 18 \\ 
\par
 $kT_{\rm 2}$ (keV) & 1.38 $\pm$ 0.06 & 1.34 $\pm$ 0.08 \\ 
 $EM_{\rm 2}$ (10$^{52}$ cm$^{-3}$) & 197 $\pm$ 29 & 190  $\pm$ 54 \\ 
\par
 $kT_{\rm 3}$ (keV) & 3.7 $\pm$ 0.6 & 3.6 $\pm$ 1.6 \\ 
 $EM_{\rm 3}$ (10$^{52}$ cm$^{-3}$) & 102 $\pm$ 32 & 60 $\pm$ 60 \\ 
\par
 $\chi^{2}$ & 743/747 d.o.f. = 0.99 & 570/539 d.o.f. =  1.06 \\ 
\hline
\end{tabular}
\end{table}