\begin{table}%t3
\caption{Log of photometric observational campaigns.}\label{tab:log}
%\centerline
{
\begin{tabular}{cccrrrrc}
\hline \hline
 Dates & Observatory & Observer(s) & No. &  Comp 1  & Comp 2  & Check & Hrs \struut \\
\hline
Feb.  4--11, 2002 & OAN & JP &  429 & C1 & C2 & no & 40.6 \\
Feb. 11--17, 2002 & OSN & RG &  748 & C1 & C2 & no & 42.0 \\
Feb. 22--Mar. 18, 2002 & LPA & PDC and KU & 90 & C1 & no & no & $^{*}$\\
Jan.  8--14, 2003 & OAN & JP &  269 & C1 & C2 & C3 & 20.0 \\
Jan.  9--Mar. 14, 2003 & BHO & PL and PVC & 1071 & C4 & no & C5 & 58.7 \\
Mar. 17--19, 2004 & OSN & RG &  144 & C1 & C2 & no & 7.0 \\
\hline
\end{tabular}}
\medskip
$^{*}$ Non-continuous observations obtained at La Palma observatory (LPA), cf. Sect.~4.
\end{table}