\begin{table}%t2
\caption{\xte\ observed \quatre\ in 1997 March and 2001~October. Provided are
  \xte\ observation ID, the beginning and the end of the observation in
  MJD, and the resulting on-source time after initial data screening and dead time 
  correction for the \pca\ and the \hexte\ in~ks. For details of the data
  extraction, see text.} \label{tab:xte_obs}
%\centering
\par
\begin{tabular}{lrrrr}
\hline
\hline 
Obs. ID & Start  & Stop  & \pca  & \hexte \\
\hline
20140-01-01-00 & 50518.176 & 50518.407 & 9.1 & 5.9\\
20140-01-01-01 & 50520.251 & 50520.365 & 4.5 & 3.1\\
\hline
60071-01-01 & 52194.010 & 52194.164 & 17.7 & 12.2 \\
60071-01-02 & 52196.268 & 52196.601 & 29.8 & 19.2 \\
60071-01-03 & 52198.834 & 52199.017 & 20.9 & 13.9 \\
60071-01-04 & 52201.339 & 52201.433 & 19.6 & 12.6 \\
\hline
Total & & & 101.6 & 66.9 \\
\hline
\end{tabular}
\end{table}