\begin{table}%t1
%\centering
\par
\caption{\label{t1}Radio observations of IC~2497.}
\begin{tabular}{cccccc}
\hline\hline
%\noalign{\smallskip}  
Epoch & Array & ${\rm \lambda}$ & $\sigma_{{\rm \lambda}}$ & Beam size & PA\\ 
 & & (cm) & $({\rm mJy}~{\rm beam}^{-1})$ & (mas$^{2}$) & $(^\circ)$ \\
\hline  
2009.092& MERLIN & 18 & 0.037 & $178 \times 165$ & 19.5 \\ 
2009.226 & MERLIN & 6 & 0.070 & $100 \times 100$ & 0.0 \\ 
2009.387 & EVN & 18 & 0.015 & $45 \times 27$ & 7.7 \\ 
\hline  
\end{tabular} 
\end{table}