\begin{table}%T3
%\centering
 \small
\caption{List of the 6.5~keV Fe emission line EWs, assuming a fixed line 
width of 0.1~keV, for the various X-ray observations covering that 
spectral energy. Errors and upper limits are at a 90\% confidence level. 
Pointings are listed in chronological order from top to bottom.}\label{t3}
\begin{tabular}{cc}
\hline
\hline
Observation & \textit{EW} (eV) \\
%\noalign{\smallskip}
\hline
%\noalign{\smallskip}
{\it EXOSAT}~I         & $<$56 \\
{\it EXOSAT}~II        & $<$73  \\
{\it RXTE}             & 48$^{+13}_{-10}$ \\
{\it BeppoSAX}         & 51 $\pm$ 20 \\
{\it Swift}            & $<$1100 \\
%\noalign{\smallskip}
\hline
%\hline
\end{tabular}
\end{table}