\begin{table}%t2
\par
\caption {\label{tab2}{\it Swift}/XRT observations log of IGR~J19405-3016. }
\small
%\centerline
 {\begin{tabular}{cccccc}
\hline \hline
Model & \multicolumn{4}{c} {Observation (date, exposure, ID)}  \\
Par &  2007-07-31  &  2007-08-07 & 2008-06-07&2007--2008 \\
 &  7.6 ks  &  5.9 ks & 1.6 ks& 15.1 ks\\
 &  0036657004  &  0036657005 & 0036657006&all \\
\hline
$\Gamma$&2.07~$\pm$~0.05 & 2.11~$\pm$~0.04 & 2.19$^{+0.14}_{-0.13}$ & 2.11~$\pm$~0.03\\
$N$ & 3.98~$\pm$~0.13 &5.95~$\pm$~0.17 & 3.16~$\pm$~0.26&4.70~$\pm$~0.10\\
flux & 1.69$^{+0.05}_{-0.06}$ & 2.44~$\pm$~0.07& 1.19~$\pm$0.10&1.94~$\pm$~0.04\\
$\chi^2$/d.o.f. & 1.11/95& 1.12/104&1.16/15 &1.13/198\\
\hline
\end{tabular}}
\par
\smallskip
Note: {the parameters  $\Gamma$ (photon index) and $N$ (Normalization at 1~keV, in units of 10$^{-3}$~ph~cm$^{-2}$~s$^{-1}$~keV$^{-1}$) are the fit results at 0.3--7~keV, using a power law model. The column density is fixed at $8.73\times10$$^{20}$~atoms/cm$^2$. The $\chi^2$/d.o.f. is shown as well for each fit. The flux is calculated  in the 0.3--10~keV band, in units of 10$^{-11}$~erg~cm$^{-2}$~s$^{-1}$.}
\end{table}