\begin{table}%t4
\caption{\label{tab:obs}Summary of the different observing campaigns of our survey.}
%\centering
\par
\begin{tabular}{llllll}     % 7 columns 
\hline\hline       
ESO Program             & Mode      &  Start. Night   & Night        & Loss       & Visits \\
                        &           &  (UT-date)      & (Nb)         & (\%)       & (Nb) \\
\hline
070.C-0565(A)           & GTO-Vis   &  26-11-2002     & 1            &            & 6            \\ 
070.D-0271(B)           & GTO-Vis   &  16-03-2003     & 1.5          &            & 8            \\  
071.C-0507(A)           & GTO-Vis   &  07-06-2003     & 0.5          & 50         & 2            \\  
071.C-0462(A)           & GTO-Vis   &  07-09-2003     & 0.5          & 50         & 2            \\  
072.C-0644(A)           & OT-Vis    &  05-03-2004     & 1            & 100        & 0            \\  
072.C-0644(B)           & OT-Vis    &  05-03-2004     & 1            & 0          & 9            \\  
073.C-0469(A)           & OT-Vis    &  27-04-2004     & 1            & 0          & 16           \\  
073.C-0469(B)           & OT-Vis    &  25-09-2004     & 1            & 0          & 12           \\  
075.C-0521(A)           & OT-Vis    &  06-05-2005     & 1            & 0          & 15           \\  
075.C-0521(B)           & OT-Vis    &  19-08-2005     & 0.5          & 0          & 10           \\  
076.C-0554(A)           & OT-Vis    &  08-01-2006     & 1            & 0          & 13           \\  
076.C-0554(B)           & OT-Vis    &  26-02-2006     & 1            & 30         & 8            \\  
078.C-0494(A)           & OT-Ser    &  2006/2007      & 0.7          & 30         & 7            \\
079.C-0908(A)           & OT-Ser    &  2007           & 1            & 0          & 10           \\
\hline                  
Total                   & --         & --               & 11.7         &            & 127          \\ 
\hline                  
\end{tabular}\vspace*{-2mm}
\end{table}