\begin{table}%t1
\par
\caption{\label{tab1}GRB sample and log of UVES observations.}
\small%\centerline
 {
\begin{tabular}{lccccc }
\hline\hline\noalign{\smallskip}
GRB & UT$^a$ &  
$\delta t$$^b$ & $t_{\rm total}$$^c$ & ESO Program&PI \\
(yymmdd) & \emph{Swift} & (hh:mm) & (h) &ID& \\ 
\hline\noalign{\smallskip}
021004  & 12:06:13 &  13:31 &  2.0 & 070.A-0599$^d$&Fiore \\
050730  & 19:58:23 &  04:09 & 1.7 & 075.A-0603 &Fiore\\
050820A  & 06:34:53 &  00:33 &  1.7 & 075.A-0385&Vreeswijk \\
050922C & 19:55:50 & 03:33 &  1.7 & 075.A-0603&Fiore\\ 
060418 & 03:06:08 & 00:10&2.6 &077.D-0661&Vreeswijk\\
060607A  & 05:12:13 &  00:08 & 3.3 & 077.D-0661& Vreeswijk \\
071031  & 01:06:36 & 00:09 &  2.6 & 080.D-0526 &Vreeswijk\\
080310  & 08:37:58 & 00:13 &  1.3 & 080.D-0526& Vreeswijk\\
080319B &06:12:49&00:09  & 2.1 &080.D-0526$^e$&Vreeswijk\\
080413A &02:54:19 &03:42 & 2.3&081.A-0856&Vreeswijk\\
\hline
\end{tabular}}
\medskip
$^a$ UT of trigger by the BAT instrument on-board
  \emph{Swift}. Exception: \newline GRB~021004, detected by \emph{WXM} 
  on-board \emph{HETE-2}.
$^b$ Time delay between the satellite trigger and the start
  of the first UVES exposure.
$^c$  Total UVES exposure
  time including all instrument setups.
 $^d$  Also 070.D-0523 (PI: van den Heuvel).
 $^e$  Also 080.A-0398 (PI: Fiore).
\end{table}