\begin{table}%t2
\caption{Swift XRT temporal decay fits. Quoted errors are 90\% confidence on 1
  interesting parameter.\label{table_decay}}
%\begin{center}
{\begin{tabular}{ccc}
\hline\hline
 & \multicolumn{1}{c}{GRB050126} & \multicolumn{1}{c}{GRB050219a} \\
 \hline
Parameter & \multicolumn{2}{c}{Model 1: Powerlaw  ($f(t)\propto t^{-\alpha}$)} \\
\noalign{\medskip}
$\alpha$         & $\rm 2.52^{+7.5}_{-0.3}$ & $\rm 2.50^{+0.16}_{-0.16}$ \\
$\chi^{2}/\nu$ & --  & 225.1/38 \\
$Cash$ $statistic/ndp^{\dagger}$ & 62.0/20  & -- \\
\hline
& \multicolumn{2}{c}{Model 2: Broken powerlaw} \\
\noalign{\medskip}
$\alpha_{1}$     & $\rm 2.52^{+0.50}_{-0.22}$  & $\rm 3.17^{+0.24}_{-0.16}$ \\
$T_{\rm break}$  & $\rm 424^{+561}_{-120}$       & $\rm 332.1^{+25.8}_{-21.6}$  \\
$\alpha_{2}$     & $\rm 1.00^{+0.17}_{-0.26}$  & $\rm 0.75^{+0.09}_{-0.07}$ \\
$\chi^{2}/\nu$ & -- & 74.6/36 \\
$Cash$ $statistic/ndp$ & 26.1/20 & -- \\
\hline
& \multicolumn{2}{c}{Model 3: Offset powerlaw $f(t)\propto (t-t_{\rm a})^{-\alpha}$} \\
\noalign{\medskip}
$\alpha$  & $\rm 1.08^{+0.09}_{-0.09}$    & $\rm 1.10^{+0.09}_{-0.08}$ \\
$t_{\rm a}$   & $\rm 105.1^{+9.1}_{-11.3}$    & $\rm 100.7^{+2.8}_{-4.0}$ \\
$\chi^{2}/\nu$ & -- & 114.1/37 \\
$Cash$ $statistic/ndp$   & 31.7/20 & -- \\
\hline
& \multicolumn{2}{c}{Model 4: Gaussian + powerlaw} \\
\noalign{\medskip}
$t_{\rm g}$ (fixed) & 0.0 & 0.0 \\
$\sigma$ & $\rm 89.1^{+17.8}_{-16.1}$ & $\rm 77.9^{+6.2}_{-6.0}$ \\
$\alpha$ & $\rm 1.11^{+0.12}_{-0.11}$ & $\rm 0.81^{+0.09}_{-0.07}$ \\
$\chi^{2}/\nu$ & -- & 89.4/36 \\
$Cash$ $statistic/ndp$ & 26.4/20 & -- \\
\hline
\end{tabular}}
\par
\parbox{9cm}{
\noindent $\dagger$ Ndp number of data points.}
%\end{center}
\end{table}