\begin{table}%t1
\caption{\label{tab:COUPObs}The COUP observations.}
%\centering
\par
\begin{tabular}{l l l l} 
\hline \hline \noalign{\smallskip}
  Obs. ID & Start [ks]\footnote{Counted from MJD 52~647.9.} & Length [ks] & Identifier \\ 
  \hline
  4395    & 0	   & 100         & O1         \\
  3744    & 156	   & 164         & O2         \\
  4373    & 384	   & 172         & O3         \\
  4374    & 616	   & 169         & O4         \\
  4396    & 841	   & 165         & O5         \\
  3498    & 1070	   &  69         & O6         \\ 
  \hline
\end{tabular}
\tablefoot{\tablefoottext{1}{Counted~from~MJD~52647.9.}}\vspace{-2mm}
\end{table}