\begin{table} \caption {\label{tab:psfit_mos}Best-fit parameters from the joint fits to PN, MOS1 and, MOS2 spectra of Elias~29, during~5 different time intervals, using an absorbed 1T thermal model.} \par %\centerline { \begin{tabular}{lccccccc} \hline\hline\\[-3mm] Time interval & $N({\rm H})$ & $kT$ & $Z$ & $E\!M$ & $\chi^2$/d.o.f. & $P$ & $F_{\rm X}$\\ \hline ~ & $N_{22}$ & keV & $Z_{\odot}$ & $E\!M_{53}$ & ~ & ~ & $F_{-13}$ \\ \hline seg1\dag & 5.5 $\pm$ 0.5 & 4.4 $\pm$ 0.7 & 1.0 $\pm$ 0.2 & 0.9 $\pm$ 0.3 & 1.1 & 0.1 & 2.1\\ seg2\dag & 7.4 $\pm$ 0.8 & 3.8 $\pm$ 0.7 & 0.8 $\pm$ 0.2 & 0.8 $\pm$ 0.3 & 1.6 & 0.0 & 1.3\\ seg3 & 6.6 $\pm$ 0.5 & 3.5 $\pm$ 0.5 & 0.7 $\pm$ 0.1 & 1.1 $\pm$ 0.3 & 1.1 & 0.2 & 1.7\\ seg4 & 7.5 $\pm$ 0.4 & 3.7 $\pm$ 0.4 & 0.7 $\pm$ 0.1 & 1.9 $\pm$ 0.4 & 1.5 & 0.0 & 3.0\\ seg5 & 5.7 $\pm$ 0.4 & 4.0 $\pm$ 0.5 & 0.5 $\pm$ 0.1 & 1.5 $\pm$ 0.4 & 1.6 & 0.0 & 2.3\\ \hline \end{tabular}} \par \smallskip \par \dag\ MOS1 data (mostly) unavailable for this time interval so only PN and MOS2 data were used. \end{table}