\begin{table}%t2
%\centering
\par
\caption{\label{rms_values}Rms fluctuations in the Fan field as a function of the angular resolution.} 
\small \begin{tabular}{c c c}   
\hline\hline \noalign{\smallskip}
Angular resolution  & rms value (K)	& rms value (mJy~beam$^{-1}$)\\
(arcmin)&&\\
\hline
2				& $30.5 \pm 0.9$	& $7.7 \pm 0.3$\\
13				& $14 \pm 1$		& $128 \pm 9$\\
\par
\hline
\end{tabular}
\end{table}