\begin{table}%t3
%\centering
\par
\caption{\label{psb100}HFSS simulation results for the horn-to-PSB coupling for the 100~GHz polarised channel (Fig.~\ref{psb}).}
\begin{tabular}{ccc}
\hline\hline
\noalign{\smallskip}
Frequency & Cross-Pol & Efficiency \\
\hline
84~GHz  & 2.5\% & 98\%\\
100~GHz & 3.3\% & 93\%\\
110~GHz & 2.3\% & 99\%\\
\hline
\end{tabular}
\tablefoot{Computations are for the edges and central frequencies of the 100~GHz spectral band.}
\end{table}