\begin{table}%t2
%\centering
\par
\caption{Summary of ISAAC/VLT observations. Slits have been rotated 
(anti--clockwise with respect to the North direction by the angle in column PA)
in order to include the most interesting features of the sources.}
\label{tab:obs_log}
\begin{tabular}{c c c c}
\hline
\hline
Source&Run &          PA    &    Grating\\
\hline
s16   &     1999 &        $-49.99$ &    SZ\\
s19  &      2000 &         75.42 &    H\\
s23   &     1999 &         63.45 &    Z\\
s25$^\ast$ &      1999,~2000&    65.45&    SZ\\
s27$^\ast$ &      1999,~2000&    $-43.85$ &    SZ\\
s28  &      1999   &      $-31.11$ &    SZ\\
s38  &      1999  &       $-77.41$ &    H\\
s39  &      1999  &        29.45 &    H\\
s40 &       2000  &       $-5.55$  &    H \\
s43 &       2000 &        $-56.05$ &    J\\
s53 &       1999 &         67.22 &    SZ\\
s54  &      2000  &        10.25 &    J\\
s55$^\ast$ &      1999,~2001 &   $-56.0$5 &    J\\
s60  &      1999,~2000 &   $-77.41$ &    H\\
s62  &      2000   &       64.15 &    J\\
s72  &      2001  &        $-67.35$ &    SZ\\
s79  &      2000  &        11.57  &   J\\
s82  &      2000  &        110.30 &   J\\
\hline
\noalign{\smallskip}
\multicolumn{4}{l}{$^\ast$: High-res data ($R_{\rm s}\sim5000$) also exist.}\\
\end{tabular}
\end{table}