\begin{table}%t1
\caption{BAT and XRT~spectral analysis results. The BAT fluxes in the XRT~
band are extrapolated from the best fit models. Quoted errors are at the 90\%
confidence level.}
\label{tab1}
\small%\centering
\par
\begin{tabular}{rrrccccc}
\hline \hline 
\noalign{\smallskip}
Interval&\multicolumn{2}{c}{Time (s)} & $N_{\rm H}$ ($10^{22}$~cm$^{-2})$ & $\Gamma$  & $\chi^2_\nu$
(d.o.f.)
        &\multicolumn{2}{c}{Flux ($10^{-9}$~erg cm$^{-2}$ s$^{-1}$)} \\
  & Start & Stop & &
& 0.2--10 keV & 15--350 keV \\
\hline
BAT 1&$-$1.43  & 2.69& -- &$-$1.2 $\pm$ 0.4  &1.2 (57)  & 1.4&22.9\\
2    & 2.69  & 4.89& -- &$-$1.05 $\pm$ 0.16 &0.86 (57) &3.2&90.8\\
3    & 4.89  & 10.1& -- &$-$1.36 $\pm$ 0.21 &0.97 (57) &3.4& 30.9\\
4    & 10.1  & 20.4& -- &$-$1.17 $\pm$ 0.08 &0.95 (57) &3.6& 66.8\\
5    & 20.4  & 30.6& -- &$-$1.22 $\pm$ 0.10 &0.93 (57) &3.0& 45.7\\
6    & 30.6  & 41.6& -- &$-$1.5 $\pm$ 0.3  &0.88 (57) &2.0& 9.9\\
\hline
XRT~1&23.2  & 28.7& 5.73 $\pm$ 4.2&$-$1.19 $\pm$ 0.1  & 0.77 (62) &3.5& --  \\
2    &28.7  & 36.9& 5.5 $\pm$ 2.5 &$-$1.34 $\pm$ 0.08 & 0.98 (95) &2.5& --  \\
3    &36.9  & 50.6& 3.4 $\pm$ 2.2 &$-$1.33 $\pm$ 0.08 & 0.78 (89) & 1.3& --  \\
4    &50.6  & 58.8& 7.7  $\pm$ 4.5 &$-$1.85 $\pm$ 0.1  & 1.12 (56) & 1.4& --  \\
5    &58.8  & 67.1& 4.2 $\pm$ 2.0 &$-$1.50 $\pm$ 0.09 & 1.14 (73) & 1.7& --  \\
6    &67.1  & 79.8& 1.5 $\pm$ 1.4 &$-$1.86 $\pm$ 0.13 & 0.94 (37) & 0.54 &--  \\
7    &79.8  &159.4& $<$6.4 &$-$1.80 $\pm$ 0.15 & 1.12 (23) & 0.12& --  \\
8    &159.4 &244.4& $<$6.4 &$-$1.97 $\pm$ 0.24 & 0.90 (7)  & 0.05& --  \\
9    &628   & 848 & $<$5.2 &$-$1.80 $\pm$ 0.24 & 0.92 (7)  & 0.02& --  \\
10   &848   &1040 & $<$6.8 &$-$1.86 $\pm$ 0.14 & 0.90 (35) & 0.08& --  \\
11 &1452 &1863    & $<$5.8    &$-$2.01 $\pm$ 0.22 & 0.80 (17) & 0.02& -- \\
12 &2275 &2618    & $<$6.9 &$-$1.90 $\pm$ 0.14 & 1.26 (47) & 0.04& -- \\
13 &3045 &8173    & $<$4.0    &$-$1.97 $\pm$ 0.12 & 1.24 (35) & 0.008& -- \\
\hline
\end{tabular} 
\end{table}