\begin{table}%t2
\caption{\label{litdet}Radio detections as a function of wavelength of our targets reported in the literature. When several measurements are available a weighted average is shown; upper limits are 3$\sigma$. Fluxes are from [1]~\citet{abbott:1980}, [2]~\citet{bieging:1989}, [3] \citet{drake:1990}, [4]~\citet{lamers:1993} and [5] \citet{scuderi:1998}.}
\small%\centering
\par
\begin{tabular}{l @{~~} c @{~~} c @{~~} c @{~~} c}
\hline
\hline
Star          & \multicolumn{3}{c}{Flux (mJy)} \\
              &  2~cm            & 3.6~cm          & 6~cm            & References\\
\hline
$\alpha$ Cam  &  $0.65\pm0.13$   & $0.44\pm0.04$   & $0.29 \pm 0.04$ & 2,5\\
15 Mon        &  $<$0.4	         &		   & $0.40 \pm 0.13$ & 3\\
              &                  &                 & $<$0.33 and $<$0.18   & 2,3\\
$\lambda$ Cep & 		 & $0.38 \pm 0.03$ & $0.40 \pm 0.25$ & 1,4\\
\hline
\end{tabular}
\end{table}