\begin{table}%t5
\caption{Parameters of the power law spectral fits ($F_{\nu}=F_{\nu_0}(\nu/\nu_0)^{-\alpha_{\nu}}$) 
of the pulsar data shown in Fig.~\ref{f:PSRopt}.}
\label{t:psr-fits}
%\centerline
{ 
\begin{tabular}{lcc}
\hline
\hline
Observations   &  $\alpha_{\nu}$    &  Log~$F_{\nu_0}$, \\
& & $\nu_0=5.47\times10^{14}$ Hz         \\ 
        &   &  [{\rm $\mu$Jy}]                \\             
\hline 
VLT spectrum        &  $1.88\pm0.01$ & 1.469(2)  \\ 
(this work)         &    & \\ 
HST/FOS spectrum$^a$&  $1.6\pm0.4$   & 1.228(115)\\ 
(Hill et~al. 1997)  &    & \\  
HST photometry      &  $\rm 1.07^{+0.20}_{-0.19}$ & 0.879(25) \\  
(this work)         &    & \\ 
10 pixel measurements & $\rm 1.24^{+0.19}_{-0.18}$ & 1.241(22)\\ 
(this work)         &    & \\  
Time-resolved photometry   & $\rm 0.26^{+0.45}_{-0.43}$ & 0.880(54)\\ 
(Middleditch et~al.~1987)  &    & \\  
\hline
\end{tabular}}\smallskip 
$^a$~Log~$F_{\nu_0}$ from Hill et~al. (1997).\\
\end{table}