\begin{table}%t1
\caption{List of SFXT candidates with quiescent flux~$F_{\rm q}$, flaring characteristics: 
range of flare count rates~$F_{\rm fl}$, number of short ($<$$15$~ks) and long ($>$$15$~ks) flares~$N_{\rm fl}$, the average and range of durations for short flares and the list of durations for long flares~$t_{\rm fl}$ and source observing elapsed time~$T_{\rm obs}$.}
\label{tab2}
\small%\centerline
 {
\begin{tabular}{l|c|c|r|l|c|l|l|r}
\hline \hline 
Source                   &Spectral&Distance&\multicolumn{1}{c|}{$F_{\rm q}$}&\multicolumn{1}{c|}{$F_{\rm fl}$}&$N_{\rm fl}$&\multicolumn{1}{c|}{$t_{\rm fl}$ [short]}&\multicolumn{1}{c|}{$t_{\rm fl}$ [long]}&\multicolumn{1}{c}{$T_{\rm obs}$}\\
&Type&kpc&\multicolumn{1}{c|}{ct/s}&\multicolumn{1}{c|}{ct/s}&short+long&\multicolumn{1}{c|}{ks}&\multicolumn{1}{c|}{ks}&\multicolumn{1}{c}{days}\\
\hline
  SFXT systems&&&&&&&& \\
\object{IGR~J08408$-$4503}     &O8.5 Ib$^1$     &2.8$^1$         &$<$$0$.1&2.1--3.9  &2+0    &3.6               &                                                            &52.0\\
\object{IGR~J17544$-$2619}     &O9 Ib$^2$         &2--4$^2$        &     0.06   &4.2--24&8+0&2.5 (2--4.3)   &                                                            &127.0\\
\object{XTE~J1739$-$302}         &O8.5 Iab(f)$^3$&1.8--2.9$^3$ &     0.08   &3.0--28&12+1 &4.2 (2--8)   &50                                                       &126.4\\
\object{SAX~J1818.6$-$1703}   &O9-B1 I$^4$     &                      &     0.18   &5.2--45&11+0    &2.9 (2--6)    &                                                          &76.9\\
\object{IGR~J16479$-$4514}     &OB I$^5$           &                       &     0.2   &2.5--19&27+11 &3.6 (2--14)  &(16--35) + 84                                    &67.0\\
\object{AX~J1841.0$-$0536}      &B0 I$^6$           &                        &$<$$0$.1&3.7--15&4+0     &5.8 (2--13.1)&                                                          &51.9\\
\object{AX~J1820.5$-$1434}      &B$^4$               &                       &$<$$0$.1&3.4--5.3&4+0     &3.9 (2--9.6) &                                                            &59.4\\
\hline
 Intermediate systems &&&&&&&& \\
\object{IGR~J16465$-$4507}     &B0.5 I$^7$        &                       &     0.1  &2.5--6.9&0+3    &                       &19, 25, 45                                          &66.7\\
\object{AX~J1845.0$-$0433}       &O9 Ia$^8$        &3.6$^8$        &    0.2  &4.0--6.2 &6+0    &4.0 (2--14.3)&                                                            &55.2\\
\object{IGR~J16195$-$4945}       &OB I$^9$         &7$^9$            &    0.2  &2.8--4.8 &6+0    &2.2 (2--3.3)  &                                                            &71.8\\
\object{IGR~J16207$-$5129}       &B0 I$^4$          &4$^4$            &    0.4  &2.8--9.2 &9+2    &4.3 (2--11)   &18, 25                                                 &73.7\\
\object{XTE~J1743$-$363}           &                         &                       &     0.5  &4.1--9.2 &16+3~~ &2.5 (2--6.6)&21, 45, 61                                          &122.9\\
\hline
\end{tabular}}
\medskip
Ref.: $^1$ \cite{Leyder2007}, $^2$ \cite{Pellizza2006}, $^3$ \cite{Negueruela2006a}, $^4$ \cite{Negueruela2007b}, $^5$ \cite{Chaty2007}, $^6$ \cite{Nespoli2007}, $^7$ \cite{Negueruela2005}, $^8$ \cite{Coe1996}, $^9$ \cite{Sidoli2005}.
\end{table}