\begin{table}%t3
  \caption{\label{halofit}X-ray dust scattering halo best-fit parameters for \src.}
%\centering
\par
\begin{tabular}{lccc}                             \hline\hline\noalign{\smallskip}
  Name                 & $0^{\prime\prime}{-}120^{\prime\prime}$  & { $0^{\prime\prime}{-}200^{\prime\prime}$  }   \\ \hline
  $\sg_1$              & 6.8\arcsec  & { 6.6\arcsec  } \\
  $A$                  & 0.87  & { 0.97  } \\
  $\sg_2$              & 30.7\arcsec & { 29.2\arcsec } \\
  $\al_2$              & 2.27  & { 2.22  } \\
  $\tausca(1~{\rm keV})$  & 1.15  & { 1.09  } \\
  $\thtscal(1~{\rm keV})$ & 15.1\arcmin & { 10.2\arcmin } \\ \hline
\end{tabular}\vspace*{2mm}
\end{table}