\begin{table}%t3
 %\centering
\par
  \caption{Summary of the results for 
all the X-ray observations on LS~5039 performed by instruments with imaging capabilities. The
unabsorbed fluxes in the energy range 0.3--10~keV, photon indices, and $N_{\rm H}$ (with $wabs$ model) values are given.
\bep\ flux errors are the flux dispersion 
accounting for the count rate changes by a factor of two during the observation and neglecting 
photon index variations. \asc\ flux errors are assumed to be~10\% of the flux. The given 2005 
\xmm~$N_{\rm H}$ values are computed with the {\it wabs} model for comparison with 2003 values. 
For more details, see M05 (2003 \xmm\ data), 
R03 (\bep\ data), and Yamaoka, K., private communication (\asc\ data). 
\label{priorobs}
  \label{tab3}}
  \begin{tabular}{lllllll}
  \hline 
  \hline\noalign{\smallskip}
Date & MJD & Mission & Phase range & 
 Flux (0.3--10~keV) &Photon index & $N_{\rm H}$ ($wabs$) \\
yyyy-MM-dd & & & &$\times10^{-11}$~erg~cm$^{-2}$~s$^{-1}$ &  & $\times10^{21}$~cm$^{-2}$ \\
  \hline\noalign{\smallskip}
1999-10-04 & 51~455.9 &\asc & 0.38--0.47 & $0.80\pm 0.08$	    & $1.6\pm 0.1$            & $7\pm 1$ \\
2000-10-01 & 51~818.5 &\bep & 0.97--0.21 & $0.5\pm 0.2$	    & $1.8\pm 0.2$            & $\rm 10^{+3}_{-4}$ \\
2002-09-10 & 52~527.3 &\cha  & 0.71--0.73& $0.8\pm 0.3$	     & $1.1\pm 0.2$           & $6\pm 2$ \\
2003-03-08 & 52~706.3 &\xmm  & 0.54--0.57& $1.03\pm 0.07$	     & $\rm 1.56^{+0.02}_{-0.05}$ & $\rm 7.2^{+0.3}_{-0.5}$\\
2003-03-27 & 52~725.8 &\xmm  & 0.55--0.58& $0.97\pm 0.07$	     & $\rm 1.49^{+0.05}_{-0.04}$ & $\rm 6.9^{+0.5}_{-0.3}$\\
2005-04-13 & 53~473.1 &\cha & 0.86--0.87 & $2\pm 1$		    & $1.1\pm 0.2$            & 6$\pm 1$ \\
2005-09-22 & 53~635.8 &\xmm & 0.49--0.53 & $\rm 1.18^{+0.03}_{-0.07}$& $1.51\pm 0.02$           & $6.7\pm 0.2$ \\
2005-09-24 & 53~637.8 &\xmm & 0.02--0.05 & $0.74\pm 0.07$	    & $1.59\pm 0.03$          & $6.6\pm 0.2$ \\
\hline
  \end{tabular}
\end{table}