\begin{table}%t1
\caption{Summary of observations: each mask is named with the identification
number of its primary target. The number of slitlets, of IR-peakers included, and  
of measured spectroscopic redshifts are reported.}
\label{tab:obs}
\small
%\centerline
{\begin{tabular}{l c c c c c c c c}
\hline
\hline
Mask & RA & Dec & PA & AM & $t$(exp) & $N$ & $N$ & $N$\\
 & J2006.4 & J2006.4 & $[$deg$]$ & & $[$s$]$ & (slits) & (peak) & (reds$^\ast$) \\
\hline
LH\_247597 & 10:52:32.694  & +57:46:27.896 & 110 & 1.55 & 3600 & 21 & 5 & 6 \\	% PA = 110.00
LH\_575325 & 10:47:43.555  & +59:09:22.974 & 131 & 1.35 & 4500 & 26 & 5 & 15 \\	% PA = 131.00
EN1\_205467 & 16:09:42.168 & +54:39:49.085 & 155 & 1.25 & 3600 & 24 & 3 & 18 \\	% PA = 155.00
EN1\_282078 & 16:16:56.673 & +55:32:02.568 & 179 & 1.26 & 5400 & 24 & 2 & 18 \\	% PA = 179.00
EN2\_273717 & 16:33:33.569 & +40:54:40.722 & 143 & 1.21 & 5400 & 23 & 3 & 15 \\	% PA = 143.00
\hline
LH\_128777 & 10:59:03.752  & +57:46:56.282 & 105 & 1.56 & 3600 & 29 & 3 & 11 \\	% PA = 105.00
LH\_579894 & 10:48:09.714  & +59:09:25.529 & 119 & 1.36 & 4500 & 24 & 6 & 9 \\	% PA = 119.00
EN1\_341469 & 16:03:38.599 & +54:23:52.565 & 180 & 1.23 & 5400 & 24 & 4 & 16 \\	% PA = 180.00
EN2\_10334 & 16:42:09.003  & +40:45:51.746 & 104 & 1.22 & 5400 & 25 & 2 & 20 \\	% PA = 104.00
EN2\_172324 & 16:34:50.206 & +41:00:10.745 & 145 & 1.08 & 4500 & 15 & 4 & 11 \\	% PA = 145.00
\hline
\end{tabular}}
\medskip
$^\ast$ Without accounting for serendipitous sources.
\end{table}