\begin{table}%t5
     \caption{\label{param}\label{simul}Summary of magnetic field power spectrum and density scaling parameters.}
\small%\centering
\par
\begin{tabular}{c c}
\hline
\hline \noalign{\smallskip}               
\multicolumn{2}{c}{BPL power spectrum}\\
\hline
 $q_{\rm l}=2.07$ &     low-frequency slope \\
 $q_{\rm h}=2.98$ &     high-frequency slope    \\
 $f_{b}$=$\rm 0.031~arcsec^{-1}$ & break frequency   ($\Lambda_{\rm b}=1/{f_{b}}=11$~kpc)\\
 $f_{\rm max} =\rm 1.67~arcsec^{-1}$ & maximum frequency ($\Lambda_{\rm min}=1/{f_{\rm max}}=0.2$~kpc)\\
 $f_{\rm min}$ fitted  & minimum frequency ($\Lambda_{\rm max}=1/{f_{\rm min}}$) \\
\hline
\multicolumn{2}{c}{Scaling of the magnetic field}\\
\hline
 $B_{0}$ fitted    &    Average magnetic field  at  group centre\\
 $\eta$  fitted    &    Magnetic field exponent of the radial profile: $\langle B\rangle(r)=B_1186
{0}\left[\frac{n_{\rm e}(r)}{n_0}\right]^{\eta}$  \\     
\noalign{\smallskip}
\hline
\end{tabular}
\end{table}