\begin{table}%t3
\caption{Best fit parameters to EPIC data using a~3~components MEKAL~model (Mewe et~al. \cite{Mew85}). 
The spectral fitting was conducted in the 0.3--5~keV band with the same abundance relative to the Sun for all components.}\label{tab3}
%\centering
\par
\begin{tabular}{c | c c }
\hline
\hline 
& Flares period & Quiescent period \\
\hline
$N_{\rm H}$ (cm$^{-2}$) & 10$^{18}$ (frozen)  & 10$^{18}$ (frozen) \\
$Z$ & 0.28 $\pm$ 0.02 & 0.22 $\pm$ 0.01 \\
$kT_{1}$ (keV) & 0.31 $\pm$ 0.02 & 0.25  $\pm$ 0.01 \\
$EM_{1}$ (10$^{52}$~cm$^{-3}$) & 0.85 $\pm$ 0.13 & 0.59 $\pm$ 0.07 \\
$kT_{2}$ (keV) & 0.71 $\pm$ 0.03 & 0.61 $\pm$ 0.01  \\
$EM_{2}$ (10$^{52}$~cm$^{-3}$) & 1.07 $\pm$ 0.11 & 1.24 $\pm$ 0.07 \\ 
$kT_{3}$ (keV) & 1.32 $\pm$ 0.06 & 1.05 $\pm$ 0.02  \\ 
$EM_{3}$ (10$^{52}$~cm$^{-3}$) & 0.93 $\pm$ 0.09 & 1.02 $\pm$ 0.07 \\ 
$\chi^{2}$ & 0.87 (204/234 d.o.f.) & 1.31 (435/332 d.o.f.) \\ 
\hline 
\end{tabular} 
\end{table}