\begin{table}%t1
\caption{Data modes for the RXTE/PCA and RXTE/HEXTE.}\label{tab_modes}
%\centering
\par
\begin{tabular}{lccc}
\hline
\hline
Mode & Time           & Energy      & Energy  \\
     & res.\ (s) & range (keV) & channels \\
\hline
{\tt Standard 1} & 1/8 & 2--60 & 1\\
{\tt Standard 2} & 16  & 2--60 & 129 \\
{\tt SB\_125us\_0\_13\_1s}  & 1/8192 & 2--5.9   & 1 \\
{\tt SB\_125us\_14\_17\_1s} & 1/8192 & 5.9--7.6 & 1 \\
{\tt E\_125us\_64M\_18\_1s} & 1/8192 & 7.6--60  & 64\\
\hline
{\tt E\_8us\_256\_DX1F} & 1/131072  & 10--250 & 256 \\
\hline
\end{tabular}
\end{table}