\begin{table}%[btp]%t1
%\centering
\par
\caption{\label{t1}Observations log.}
\begin{tabular}{lcccccccr}
\hline \hline\noalign{\smallskip}
Date (Telescope) & Spectral domain & UT start & UT stop & Max. flux  & Min. flux& Average flux & Average polarization  \\
 &  & time & time &  & & sampling rate & sampling rate  \\
       \hline  
2004 June 13 (NACO)& 2.2~$\mu$m & 07:20:02 & 09:15:08  & 5.19 mJy & 2.21 mJy & 1.2 min &  3 min \\
2005 July 30 (NACO)& 2.2~$\mu$m & 02:07:36 & 07:03:39 &  8.19 mJy & 1.23 mJy & 1.2 min & 3 min \\
2006 June 1 (NACO)& 2.2~$\mu$m & 04:26:03 & 10:44:27 & 19.33 mJy & 0.72 mJy & 1.5 min & 2 min \\
2007 May 15 (NACO)& 2.2~$\mu$m & 09:08:14 & 09:42:12 & 22.27 mJy & 1.70 mJy & 1.5 min & 2 min \\
2007 May 17 (NACO)& 2.2~$\mu$m & 04:42:14 & 09:34:40 & 11.87 mJy & 1.86 mJy & 1.5 min & 2 min \\
2008 May 28 (CIAO)& 2.15~$\mu$m & 09:22:51 & 13:00:37 & 7.70 mJy & 0.97 mJy & 3.3 min & 10 min \\
\hline
\end{tabular}
\vspace*{5mm}
\end{table}