\begin{table}%t4
\caption{Values for the 3$\sigma$ levels, maximum possible measured ionising flux and predicted
ionising flux, for radio sources not detected in the survey.}
\label{tbl:upplim}
%\centering
\par
\begin{tabular}{cccc}
\hline  \hline
 & 3$\sigma$ flux upper limit & Max. observed ionising flux & Predicted ionising flux \\
SFO Object & (mJy) & $\Phi_{{\rm max}}$ (10$^{8}$ cm$^{-2}$~s$^{-1}$) & $\Phi_{\rm P}$ (10$^{8}$ cm$^{-2}$ s$^{-1}$) \\ 
\hline
3	 & 2.04  & 2.02  & 21.15 \\ 
8	 & 1.52  & 1.78  & 118.31\\  
9	 & 2.10  & 2.02  & 78.22 \\	 
19	 & 0.75  & 0.51  & 0.57  \\   
20	 & 1.40  & 1.47  & 1.47  \\ 
22	 & 1.78  & 1.93  & 22.83 \\
23	 & 1.91  & 2.07  & 2.52  \\
24	 & 2.69  & 2.17  & 11.52 \\
26	 & 1.37  & 1.22  & 1.06  \\
33	 & 1.55  & 1.13  & 13.29 \\
34	 & 1.40  & 1.48  & 9.98  \\
39	 & 1.72  & 1.85  & 9.18  \\\hline
\end{tabular}	
\end{table}