\begin{table}%t1
\par
\caption{\label{param}Parameters for the SSC+EC or SSC model used to reproduce
the SED (Figs.~\ref{fig.1} and~\ref{fig.3}).}
%\centering
\par
\begin{tabular}{llll}
\hline\hline\noalign{\smallskip}
Parameters          &If $z=0.444$           &If $z=0.1$      \\ 
% \multicolumn{4}{c}{\emph{Model parameters}}\\
\hline\\[-3mm]
$L_{\rm inj}$ ($10^{41}$~erg~s$^{-1}$)          & $4.0$                         & $6.3$       \\
$\gamma_{\rm min}$                             & $2.5\times10^{4}$             & $1.5\times10^{4}$       \\
$\gamma_{\rm max}$                             & $8.0\times10^5$               & $8.0\times10^5$       \\
$s$                                            & $3.4$                         & $3.3$       \\
$R$ ($10^{16}$~cm)                              & $7.0$                         & $7.0$           \\
$\delta$                                       & $35$                          & $30$        \\
$B$ (Gauss)                                     & $0.034$                       & $0.05$       \\
$\nu_{\rm ext}$ (Hz)                                & $2.5\times10^{15}$           & $--$      \\
$U_{\rm ext}$ (erg/cm$^3$)                          & $3.5\times10^{-6}$            & $--$      \\
\hline
\end{tabular}%\vspace*{-4.5mm}
\end{table}