\begin{table}%t1
%\centering
\par
\caption{\label{table0}OCRA-p nominal system specification \citep[from][]{Lowe}.}
\small \begin{tabular}{ll}
\hline\hline
Frequency range       &  27--33~GHz\\
System temperature    & 40~{K} \\
Individual beam $FWHM$  & 1.2~arcmin \\
Beam spacing          & 3.1~arcmin \\
\hline
\end{tabular}
\end{table}