\begin{table}%T4
\caption{Time-resolved spectroscopy of $\sigma$~Ori~E. Errors are 90\%
confidence ranges for one interesting parameter.}\label{tab:soriE_evol}
%\centerline
{
\begin{tabular}{lccrrrlcccc}
\hline \hline\noalign{\smallskip}
Interval& $T_1$& $T_2$& $EM_1/10^{53}$& $EM_2/10^{53}$& $Z/Z_\odot$& 
  $\chi^2_r$/d.o.f.& $F_x^{~a}/10^{-12}$& $L_x^{~a}/10^{31}$& $t_c^{~b}$&
  $\Delta t$ \\
        & (keV)& (keV)& (cm$^{-3}$)   & (cm$^{-3}$)   &            
        &                  & (erg cm$^{-2}$ s$^{-1}$)& (erg s$^{-1}$)& (h)& 
  (h) \\
\noalign{\smallskip} \hline \noalign{\smallskip}
Quiescent& $\rm 0.31_{-0.06}^{+0.10}$& $\rm 1.06_{-0.22}^{+0.21}$& 
  $\rm 7.09_{-2.33}^{+4.12}$ & $\rm 6.21_{-1.82}^{+3.59}$ &
  $\rm 0.09_{-0.06}^{+0.10}$& 1.00/26 & 0.59& 0.88& 12.3& 3.6 \\
\noalign{\smallskip}
Peak     & $\rm 0.80_{-0.07}^{+0.15}$& $\rm 3.52_{-0.37}^{+0.40}$& 
  $\rm 3.62_{-1.14}^{+1.99}$ & $\rm 34.88_{-2.38}^{+3.74}$&
  $\rm 0.73_{-0.27}^{+0.31}$& 0.68/101& 3.06& 4.54& 15.5& 1.7 \\
\noalign{\smallskip}
Decay  & $\rm 0.75_{-0.10}^{+0.07}$& $\rm 3.25_{-0.30}^{+0.41}$& 
  $\rm 6.35_{-2.30}^{+6.08}$ & $\rm 32.25_{-2.33}^{+2.49}$& 
  $\rm 0.30_{-0.06}^{+0.06}$& 0.91/129& 2.64& 3.91& 17.5& 2.5 \\
\hline
\end{tabular}}
\medskip
{$^a$ Unabsorbed flux and luminosity in the {\it ROSAT}
($0.1{-}2.4$~keV) band. $L_{\rm X}$ has been computed assuming $d=352$ pc.} \\
{$^b$ Central time of the intervals in hours from
JD~2~452~357.}
\end{table}