\begin{table}%t8
\caption{Broadband properties.}
%\centerline
{
%\scriptsize
\begin{tabular}{lccccccc}
\hline
\hline
\noalign{\smallskip}
Source &&   \multicolumn{2}{c}{$\alpha_{\rm OX}$} &&  \multicolumn{2}{c}{$\log R_{\rm UV}^a$}  &  $\log R_{\rm X}^b$  \\
\noalign{\smallskip}
  && SMC$^c$ & X-ray$^d$ &&  SMC$^c$ & X-ray$^d$ &   \\
\noalign{\smallskip}
\hline
\noalign{\smallskip}
\noalign{\smallskip}
  NGC~1692   && --0.92 & --1.39 && 4.33 & 3.07 & $-1.27$\\
\noalign{\smallskip}
\noalign{\smallskip}
 PKS~0625-35  && --1.17 & --1.26 && 2.94 & 2.71 & $-1.98$\ \\
\noalign{\smallskip}
\noalign{\smallskip}
3C~88      && --1.38 & $\dots$ && 3.26 &  $\dots$ & $-1.50$\ \\
\noalign{\smallskip}
\noalign{\smallskip}
3C~444     && --0.85 & --0.94 && 2.60 & 2.38 & $-3.77$\   \\
\hline
\end{tabular}}\medskip
 $^a$ UV radio loudness $R_{\rm UV}= L_\nu({\rm 5~GHz)}/L_\nu({\rm 2500~\AA})$.
$^b$ X-ray radio loudness $ R_{\rm X}=\nu L_\nu({\rm 5~GHz)}/L_{\rm 2-10~ keV}$. 
$^c$ Computed assuming a SMC-type extinction 
curve. $^d$ Computed assuming $A(V)/N_{\rm H}=5.3\times 10^{-22}$ with $N_{\rm H}$ derived from
the X-ray spectral fitting.
\label{tab8}
\end{table}