\begin{table}%t1
\caption{Outline of observations accomplished in 2005.}
\label{outline}
%\centering
\small
\begin{tabular}{cccc}
\hline \hline
Period of observation & Nights of observation &
 Number of photometric points  &  Total exposure time  \\
\hline
May & 6 & 129 & 14~520 s \\
September & 8 & 159 &  18~080 s \\
October & 3 & 102 & 11~590 s \\
November & 21 & 1581 & 173~540 s \\
December & 6 & 64 & 7030 s \\
\hline
\end{tabular}
\end{table}