\begin{table}%T1
%\centering
\par
\caption{X-ray unabsorbed flux in the 0.3--10~keV band (in units of $10^{-12}$~erg 
cm$^{-2}$ s$^{-1}$), orbital phase and spectral powerlaw index of LS~5059 in the 
observations performed with different satellites. 
The references for the {\it RXTE} and {\it BeppoSAX} observations are 
Rib\'o \ea\ (\cite{Rib99}) and Reig \ea\ (\cite{Reig03}), respectively; however, we checked PDS data 
ourselves to better constrain $\Gamma$ in the {\it BeppoSAX} observation (see text). 
We also analyzed {\it ASCA} SIS and GIS data,
obtaining the results which are reported here. Orbital phases are computed    
according to the revised ephemeris of McSwain et~al. (\cite{McSwain04}); the associated errors range
from $2$ to $5\%$. }
\label{gamma}
\begin{tabular}{c|ccc}
\hline\hline
{Observation}       & $F_{0.3-10 ~\rm keV}$ & Orbital          &   $\Gamma$     \\
                        &                  & Phase            &                \\
\hline
{\it RXTE} 08/02/98 (I) & $\sim$40      & $\sim$0.91 & $1.95\pm0.02$  \\
{\it RXTE} 08/02/98 (II)& $\sim $40      & $\sim $0.10 & $1.95\pm0.02$  \\
{\it RXTE} 16/02/98     & $\sim $40      & $\sim $0.88 & $1.95\pm0.02$  \\
{\it ASCA} 04/10/99     & $\sim $13      & 0.22--0.38   & $\sim $1.5      \\
{\it SAX} 08/10/00      & $\sim $4.9     & 0.75--0.96   & $\la $1.8   \\
{\it Chandra} 10/09/02  & $\sim $8.1     & $\sim $0.35 & $\rm 1.15^{+0.23}_{-0.21}$  \\
{\it XMM} 08/03/03      & $\sim $10.3    & $\sim $0.79 & $\rm 1.56^{+0.02}_{-0.05}$  \\
{\it XMM} 27/03/03      & $\sim $9.7     & $\sim $0.21 & $\rm 1.49^{+0.05}_{-0.04}$   \\
\hline
\end{tabular}
\end{table}