\begin{table}%t1 
\caption{Details of spectra obtained with UVES.}\label{tb:obs}
%\centering
\small
\begin{tabular}{@{}llllll@{}}
\hline
\hline
Date\rule[0pt]{0pt}{10pt}
& Obs.   & Exposure & Mode & Arm  & Wavelength \\
&               & (s)      &      &      & (\AA)\rule[-5pt]{0pt}{0pt} \\
\hline
2000-10-07 & 101818 & 4500 & DI2  & blue & 3460\rule{0pt}{10pt} \\
           &        & 4499 &      & red  & 8600 \\
2000-11-16 & 101822 & 4500 & DI1  & blue & 3460 \\
           &        & 4499 &      & red  & 5800 \\
2000-11-17 & 101821 & 4500 & DI1  & blue & 3460 \\
           &        & 4499 &      & red  & 5800 \\
2000-11-18 & 101820 & 4500 & DI1  & blue & 3460 \\
           &        & 4499 &      & red  & 5800 \\
2000-12-15 & 101812 & 3600 & DI2  & blue & 4370 \\
           &        & 3599 &      & red  & 8600 \\
           & 101813 & 3600 & DI2  & blue & 4370 \\
           &        & 3600 &      & red  & 8600 \\
           & 101814 & 3600 & DI2  & blue & 4370 \\
           &        & 3599 &      & red  & 8600 \\
2000-12-16 & 101811 & 3600 & DI2  & blue & 4370 \\
           &        & 3600 &      & red  & 8600 \\
2000-12-21 & 101810 & 3600 & DI2  & blue & 4370 \\
           &        & 3599 &      & red  & 8600 \\
           & 101815 & 3600 & DI2  & blue & 4370 \\
           &        & 3599 &      & red  & 8600 \\
2000-12-23 & 101817 & 4500 & DI2  & blue & 3460 \\
           &        & 4500 &      & red  & 8600 \\
2000-12-24 & 101819 & 4500 & DI1  & blue & 3460 \\
           &        & 4500 &      & red  & 5800 \\
2001-01-02 & 101816 & 4500 & DI2  & blue & 3460 \\
           &        & 4500 &      & red  & 8600 \\
\hline
\end{tabular}
\end{table}