\begin{table}%T2
\caption{\label{tab:orbital}Properties of the Fe~{\sc xxvi} K$\alpha$ absorption
feature in three segments of the persistent emission during the 2001
observation. The time reference used for phase 0 is 19.25~h of 2001 January 22 and the period is~3.88~h.}
%\centering
$$
\begin{tabular}{llccc}
\hline\hline
 & & Segment 1 & Segment 2 & Segment 3 \\
\hline
\multicolumn{2}{l}{Phase range} & 0.12--0.35 & 0.35--0.59 & 0.59--0.82 \\
\multicolumn{2}{l}{Fe~{\sc xxvi} K$\alpha$ abs feature}\\
&$E_{{\rm line}}$ (keV)     &$6.93 \pm 0.09$    & $\rm 6.95 ~ ^{+0.03} _{-0.06}$ & $\rm 6.97 ~ ^{+0.04} _{-0.05}$ \\
&$\sigma$ (eV)                  &$<$185  &    $<$140  & $<$126 \\
&$EW$              (eV)         &$\rm -22 ~ ^{+16} _{-15}$  &  $-21 \pm 11$ & $\rm -31 ~ ^{+14} _{-12}$ \\
\hline
\end{tabular}
$$
\end{table}