\begin{table}%t1
\caption{\label{tab:interp}The phase spaces used to interpolate from hardness ratio (HR) to counts-to-flux conversion factors (CF) and spectral photon index~(\G).}
%\centering
\par
\begin{tabular}{ccccc}
\hline \hline \noalign{\smallskip}
Instrument        &  0.3--10 keV flux    &  15--50 keV flux  & 10 keV Flux density  & \G \\
\hline
BAT               & log~(HR), log~(CF)      &  HR, CF          & log~(HR), log~(CF)     & log~(HR), \G \\
XRT               & HR, CF                &  log~(HR), log~(CF)& log~(HR), log~(CF)     & log~(HR), \G \\
\par
\hline
\end{tabular}
\end{table}