\begin{table}%t6
%\centering
\par
\caption{\label{table:2}Co and cross-polarisation peak values for the 100-1 horn beam intensity patterns.}
\begin{tabular}{ccc} 
\hline\hline
\noalign{\smallskip}
Mode   & Co-pol. peak value (dB) &  Cross-pol. peak value (dB)\\
\hline
$TE_{11}$ & $22.2$ & $-27.5$  \\ 
$TM_{11}$ & $17.2$ &$-32.5$ \\ 
\hline
\end{tabular}
\end{table}