\begin{table}%t3
\caption{Summary of the parameters derived for the XEST~sources in
quiescence and during flares.}
\label{tab_summ}
\small%\centerline
{
\begin{tabular}{llccrccrcc}
\hline\hline
%&&&&&&&&&\\[-8pt]
XEST ID& Optical ID & $T_{\rm q}^{~a}$& $L_{\rm Xq}^{~a}$&
$T_{\rm peak}^{~b}$& $L_{\rm Xpeak}^{~b}$&
$\tau_{\rm rise}^{~c}$&
$\tau_{\rm dec}^{~c}$& $L$& $L/R_\star$\\[2pt]
   &  & (MK)& ($10^{30}$ erg s$^{-1}$)& (MK)& ($10^{30}$ erg s$^{-1}$)& (ks)& (ks)& 
($10^{11}$ cm)& \\
\hline
04-016       & V830 Tau    & 22      & 2.8     & $\ge$33& $\ge$8.5& $\cdots$& 11.4    & $\cdots$   & $\cdots$\\
09-026       & HQ Tau      & 19      & 4.6     & $\ge$34& $\ge$9.1& $\cdots$& 45.2    & $\ga$~7.1 & $\cdots$\\
11-057       & FS Tau      & 36      & 1.4     & $\ge$42& $\ge$6.3& $\cdots$& 15.2    & $\la$~2.7 & 4.1     \\
12-040       & DN Tau      & 19--27  & 1.0--1.4& $\cdots$ & $\cdots$  & $\cdots$& $\cdots$& $\cdots$   & $\cdots$\\
15-040       & DH Tau      & 20      & 4.7     & $\ge$24& $\ge$9.8& $\cdots$& 34.2    & $\la$~4.5 & 3.5     \\
17-066       & JH 108      & 28      & 1.5     & \ ~46   & \ \ 3.7   & \ 3.8   & \ 3.3   & $\la$~0.6 & 0.7     \\
21-039       & HD 283572   & 19--26  & 10--14  & $\cdots$ & $\cdots$  & $\cdots$& $\cdots$& $\cdots$   & $\cdots$\\
22-047       & XZ Tau      & 40      & 0.9     & \ ~70   & \ \ 3.8   & 35.3    & $\cdots$& $\cdots$   & $\cdots$\\
22-089       & L1551 51    & 16      & 1.4     & $\ge$17& $\ge$2.5& $\cdots$& \ 9.5   & $\la$~1.1 & 1.1     \\
23-032/24-028& V410 Tau    & 20      & 3.8     & \ ~43   &  11.7     & 20.9    & \ 8.1   & 0.1--0.7   & 0.1--0.4\\
23-047/24-040& V892 Tau    & 23      & 9.5     & ~100    &  46.8     & \ 3.4   & $\cdots$& 1.0$^{~d}$& 0.5    \\
23-050/24-042& V410 X7     & 24      & 0.7     & $\ge$63& $\ge$4.9& \ 1.5   & \ 2.1   & $\ge$0.5 & 0.4     \\
23-056/24-047& Hubble 4    & 19--30  & 3.5--5.4& $\cdots$ & $\cdots$  & $\cdots$& $\cdots$& $\cdots$   & $\cdots$\\
23-074/24-061& V819 Tau    & 14      & 2.0     & \ ~19   & \ \ 3.8   & \ 1.3   & 10.1    & 0.7        & 0.5     \\
26-072       & HBC 427     & 25      & 3.2     & \ ~72   &  15.8     & \ 3.2   & 20.2    & 2.4        & 1.9     \\
28-100       & BP Tau      & 18      & 1.5     & \ ~47   &  \ ~4.9  & \ 2.6   & 10.4    & 1.2        & 0.9     \\
\hline
05-031       & HD 283810   & 10      & 1.5$^{~e}$& \ ~26& \ \ 3.2$^{~e}$& \ 0.5& \ 2.4 & 0.3        & $\cdots$\\
16-031       & J04195676+27& $\cdots$& $\cdots$& \ ~21   & \ \ 3.5   & \ 0.6   & \ 1.6   & 0.01       & $\cdots$\\
\ \ \ ''     & \ \ \ \ ''  & $\cdots$& $\cdots$& \ ~42   &  20.0     & \ 0.8   & \ 1.5   & 0.01--0.09 & $\cdots$\\
22-024       & HD 285845   & 18      & 2.1$^{~f}$& \ ~40& \ \ 6.5$^{~f}$& $\cdots$& $\cdots$& $\cdots$& $\cdots$\\
\hline
\end{tabular}}
\medskip
$^a$ Temperature of the hot component and luminosity in the quiescent (or lowest count rate) intervals; a~range is given for sources  with slow modulation or complex
variability. 
$^b$~Peak temperature and luminosity for sources showing flares or prolonged rise/decays. 
$^c$~Rise and decay e-folding timescales. 
$^d$~From \citet{Giardino04}.
$^e$~Computed for $d = 60$~pc.
$^f$~Computed for $d = 90$~pc.
\end{table}