\begin{table}%t5
        \caption{Best-fit spectral parameters for XZ Tau during three
          consecutive time intervals of \xmm\ observation.}
%%%\centering
\par
    \begin{tabular}{ccccccccc}
    \hline  \hline
Time interval & $N({\rm H})$ & $kT_1$ & $kT_2$ & $E\!M_1$ & $E\!M_2$ &
$Z$ & $\chi^2$ & $P$ \\
\hline
 ks & $10^{22}~{\rm cm^{-2}}$ & keV & keV & $10^{53}$ cm$^{-3}$ &
 $10^{53}$ cm$^{-3}$ & $Z_\odot$ & ~ & ~\\
\hline
0--20 & $1.06\pm 0.06$ & $0.14\pm 0.08$ & $2.29\pm 0.30 $  & $1665\pm 1297$
& $1.25\pm 0.36$ & $0.057\pm 0.035$ & 1.43 & 0.02\\
20--40 & $0.49\pm 0.11$ & $0.29\pm 0.07$ & $4.27\pm 0.78 $  & $36.7\pm 44.3$
& $1.97\pm 0.57$ & $0.0077\pm 0.0076$ & 1.00 & 0.49\\
40--54 & $0.26\pm 0.02$ & $1.00\pm 0.08$ & $4.98\pm 2.15 $  & $2.12\pm 2.89$
& $1.85\pm 1.13$ & $0.083\pm 0.066$ & 0.94 & 0.64\\
\hline
    \end{tabular}
    \label{tab:xztau}
\end{table}