\begin{table}%t2
\caption{Overview of the observations.}\label{tab: observations}
%\centering
\small
\begin{tabular}{lccc}
\hline
\hline
		Obs. dates	& Freqs. covered	& ($u, v$) range covered	& \# Antennae used	\\
				& (GHz)			& (k$\lambda$)			&			\\
		\hline
		\multicolumn{4}{c}{ATCA}									\\
10 July 2003	& 89.999, 90.095	& 8-33				& 3			\\
		11 July 2003	& 89.999, 90.095	& 9-33				& 3			\\
		12 July 2003	& 89.999, 90.095	& 6-33				& 3			\\
		13 July 2003	& 89.999, 90.095	& 6-33				& 3			\\
		19 August 2005	& 89.181, 91.456	& 19-76				& 5			\\
		24 August 2005	& 89.180, 91.456	& 12-70				& 5			\\
				& 90.000, 90.096	& 14-75				& 5			\\
		25 August 2005	& 89.176, 91.456	& 10-71				& 5			\\
		26 August 2005	& 89.176, 91.456	& 12-71				& 5			\\
		28 August 2005	& 89.176, 91.456	& 12-71				& 5			\\
\hline
\multicolumn{4}{c}{SMA}					\\
28 April 2006	& 217.347, 226.892	& 4-53				& 8			\\
\hline
\end{tabular}
\end{table}