\begin{table}%t1
\caption{\label{tab: opt_diary2}Synthetic view of the June 2006 \fer\ campaign.}
\small%\centerline
 {
\begin{tabular}{c c c c c }
\hline\hline
 \# & HJD range & $\phi_{\lambda4686}$ & $n$\\
\hline
 1 & 3911.50709--3911.86854 & 0.754--0.839 & 19 \\
 2 & 3912.47729--3912.87965 & 0.983--0.078 & 32 \\
 3 & 3913.47072--3913.88523 & 0.217--0.315 & 49 \\
 4 & 3914.48017--3914.87588 & 0.455--0.548 & 34 \\
\hline			        
\end{tabular}}
The first column indicates the night number with respect to the beginning of the campaign. The second and third columns yield the heliocentric Julian date (in format HJD$-$2~450~000) and phase interval ranges covered. The last column lists the number~$n$ of spectra obtained each night.	\end{table}