\begin{table}%t3
%\centering
\par
\caption{\label{tab_xte} Features in RXTE/PCA spectra.}
\begin{tabular}{c c c c c}
\hline\hline
\noalign{\smallskip}
Parameters & 27 February 2005 & 14 March 2005 & 15 March 2005 & 16 March 2005 \\
\noalign{\smallskip}
\hline
\noalign{\smallskip}
Line energy (keV) (FIXED) 		& 6.4 		& -- & -- & -- \\
1$\sigma$ line width (eV)		& 300~$\pm$~100 	& -- & -- & -- \\
Equivalent width (eV)			& 135~$\pm$~20	& -- & -- & -- \\
Identification 				& Fe I 		& -- & -- & -- \\
\noalign{\smallskip}\noalign{\smallskip}
Edge energy (keV)  & -- 	& 8.68~$\pm$~0.05	& 8.57~$\pm$~0.03	& 8.77~$\pm$~0.04\\
Edge optical depth & -- 	& 0.44~$\pm$~0.05	&  0.5~$\pm$~0.2	& 0.57~$\pm$~0.05\\
Edge width 	   & -- 	&  1.2~$\pm$~0.2 	&  1.9~$\pm$~0.5 	& 1.3~$\pm$~0.2\\
\hline
\end{tabular}
\end{table}