\begin{table}%t1
\par
\caption{Flux and luminosity values of \saxj\ in the individual
observations.} \label{detections}
%\centerline
{\begin{tabular}{crrrr}
 \hline\hline
Start Observation   &   Net exposure  &   Absorbed flux  (0.2--12 keV)    &   Luminosity$^{a}$   & Hardness   \\
   date -- UT        &     (ks)      &   (erg~cm$^{-2}$~s$^{-1}$)        &   (erg~s$^{-1}$)          & Ratio$^{b}$  \\
\hline
2003-09-11 13:22:41   &  8.1     &   $<$$6.1\times10^{-14}$       &   $<$$3.03\times10^{32}$        & --   \\
2003-09-15 18:47:20   &  5.1     &   $<$$7.8\times10^{-14}$       &   $<$$3.88\times10^{32}$        & --   \\
2003-09-18 13:17:46   &  6.8     &   $<$$2.2\times10^{-13}$       &   $<$$11.1\times10^{32}$        & --   \\
2003-09-21 09:53:21   &  3.7     &   $(1.7\pm0.5)\times10^{-13}$ &   $(8.5\pm0.5)\times10^{32}$   & 0.17 $\pm$ 0.18 \\
2003-09-25 12:45:02   &  5.0     &   $(5.5\pm0.7)\times10^{-13}$ &   $(27.6\pm3.4)\times10^{32}$  & $0.48 \pm 0.08$ \\
2003-10-08 07:29:55   &  2.8     &   $(3.7\pm0.6)\times10^{-13}$ &   $(18.6\pm2.4)\times10^{32}$  & $0.29 \pm 0.13$ \\
2003-10-13 15:30:19   &  4.6     &   $(9.0\pm3.3)\times10^{-14}$ &   $(4.5\pm1.6)\times10^{32}$   & $-0.28 \pm 0.21$ \\
2003-10-15 22:34:19   &  5.9     &   $(3.2\pm1.3)\times10^{-14}$ &   $(1.6\pm0.7)\times10^{32}$   & $-0.06 \pm 0.15$ \\
2004-03-13 11:44:58   &  2.7     &   $(4.0\pm0.7)\times10^{-13}$ &   $(20.7\pm3.3)\times10^{32}$  & $0.30 \pm 0.11$ \\
2004-04-14 08:04:48   &  4.5     &   $<$$1.6\times10^{-13}$        &   $<$$8.0\times10^{32}$ & --   \\
\hline
\end{tabular}}
\par
\medskip
\par
$^{a}$ In the energy range 0.2--12 keV, corrected for the
absorption, and assuming a distance of 5~kpc.
\\
$^{b}$ Ratio between the source count rates in the hard ($H =
2{-}12$~keV) and soft ($S = 0.2{-}2$~keV) energy ranges, defined as
$(H-S)/(H+S)$.
\end{table}