\begin{table}%t2
\caption{The observing window relative to the July $2002$ observations. %% Bruntt The number of observing hours is given for each night.
The last line shows the total number of observing hours for each site.
}\label{tab:obswindow}
%\begin{center}
\par
\begin{tabular}{c c c c}
\hline\hline
 Night & Hawaii &  SPM   &  Loiano \\
\hline
$1{\rm st}$   & $3.58$   &  $-$  &  $-$   \\
$2{\rm nd}$   & $3.88$   &  $-$  &  $-$   \\
$3{\rm rd}$   & $2.68$   &  $6.31$  &  $3.58$   \\
$4{\rm th}$   & $7.56$   &  $6.61$  &  $5.21$   \\
$5{\rm th}$   & $5.23$   &  $6.58$  &  $6.08$   \\
$6{\rm th}$   & $8.30$   &  $6.86$  &  $5.45$   \\
$7{\rm th}$   & $-$   &  $3.20$  &  $-$   \\
$8{\rm th}$   & $-$   &  $7.03$  &  $-$   \\
$9{\rm th}$   & $8.34$   &  $7.27$  &  $-$   \\
$10{\rm th}$  & $8.37$   &  $4.15$  &  $-$   \\      \hline
Total      &  \bf{$47.94$} & \bf{$48.01$} & \bf{$20.32$}  \\
\hline
\end{tabular}
%\end{center}
\par

\end{table}