\begin{table}%t4
%\centering
\par
\caption {Log of GROND observations.\label{tab:grond}}
\begin{tabular}{lcccc}
\hline\hline
Date (UTC)& Filter & Mag & Err \\
\hline
2008-02-14 02:11:05     &  $g^{\prime}$  &    19.25 &   0.03\\
2008-02-14 02:11:05     &  $r^{\prime}$  &  18.89 &   0.04\\
2008-02-14 02:11:05     &  $i^{\prime}$  &    18.86 &   0.04\\
2008-02-14 02:11:05     &  $z^{\prime}$  &    18.88 & 	0.05\\
2008-02-14 02:11:05     &  $J$  &    	18.81 & 	0.06\\
2008-02-14 02:11:05     &  $H$  &    	18.76 & 	0.07\\
2008-02-14 02:11:05     &  $K$  &    	18.58 & 	0.06\\
2008-02-14 05:21:55     &  $g^{\prime}$ &    	19.25 & 	0.03\\
2008-02-14 05:21:55     &  $r^{\prime}$ &    	18.89 & 	0.04\\
2008-02-14 05:21:55     &  $i^{\prime}$ &    	18.85 & 	0.04\\
2008-02-14 05:21:55     &  $z^{\prime}$ &    	18.82 & 	0.05\\
2008-02-14 05:21:55     &  $J$  &    	18.85 & 	0.06\\
2008-02-14 05:21:55     &  $H$  &    	18.75 & 	0.07\\
2008-02-14 05:21:55     &  $K$  &    	18.66 & 	0.06\\
\hline
\end{tabular}
\end{table}