\begin{table}%t1
 \caption{Swift/XRT observation log.}
 \label{grb070724B:tab:alldata}
 \small%\centerline
 {
 \begin{tabular}{llllll}
 \hline
 \hline
&&&&& \\[-8pt]
Sequence         & Start time  (UT)             & End time   (UT)                 & Net exposure$^{{a}}$  & Time since trigger$^{{b}}$     \\
                 & (yyyy-mm-dd hh:mm:ss)         & (yyyy-mm-dd hh:mm:ss)        &(s)   & (s)    \\
 \hline
00020055001 &2007-07-25 18:32:39     &2007-07-25 20:34:52     & 3971    &68~852   \\
00020055003 &2007-07-27 00:02:07     &2007-07-27 06:09:56     & 4002    &175~019  \\
00020055004 &2007-07-31 11:27:41     &2007-07-31 17:57:58     & 3139    &561~754  \\
00020055005 &2007-08-01 08:12:05     &2007-08-01 14:58:56     & 3302    &636~418  \\
00020055006 &2007-08-02 00:31:49     &2007-08-02 07:02:56     & 2037    &695~201  \\
  \hline
  \end{tabular}}
\medskip
$^{{a}}$ The exposure time is spread over several snapshots (single continuous pointings at the target) during each observation. \\
$^{{b}}$ Start time of the observation in seconds since the SuperAGILE trigger.
\end{table}