\begin{table}%t1
 \caption{\label{tab:data}Specifications of the coadded images for \cldzero. }
  \small%\centering
\par
 \begin{tabular}{cccccc}
  \hline\hline\noalign{\smallskip}
 Filter & Observation dates & $T_{{\rm exp}}^{{\rm fin}} [s]$& Seeing &
 Calib. Method & $m_{{\rm lim}}$ \\ 
 \noalign{\smallskip}\hline\noalign{\smallskip}
 $r'$ & 2004-10-06/7 & 6600 & 0.82
& stellar colours & 25.9\\
 $g'$ & 2005-10-30/1, 2005-11-01 &  7950 & 0.87 & SDSS standards & 26.8\\
 $i'$ & 2005-10-31 & 5700 & 1.03 & SDSS standards & 25.1\\ 
 \hline
 \end{tabular} 
\end{table}