\begin{table}%t1
\caption{Sample of galaxy clusters hosting mini radio halos.}
\label{Tab.minihalo}
\par
\small%\centerline
 {
\begin{tabular}{lclll}
\hline\hline
Name   & $z$ &  Log $L_{\rm X}$ & Log $P_{\rm 1.4~GHz}$ & Log $R_{\rm H}$\\
       &   &  (erg/s)& (W/Hz) & (kpc)\\
\hline
Perseus (a) & 0.018 & $\rm 44.82^{+0.01}_{-0.01}$ & $\rm 24.27^{+0.04}_{-0.04}$ & 2.12 \\
A2390  (b) & 0.228 & $\rm 45.13^{+0.05}_{-0.05}$ & $\rm 24.99^{+0.02}_{-0.02}$ & 2.26 \\
A2626  (c) & 0.060 & $\rm 44.03^{+0.05}_{-0.05}$ & $\rm 23.36^{+0.03}_{-0.10}$ & 1.85 \\
RX J1347.5$-$1145 (d) & 0.451 & $\rm 45.65^{+0.05}_{-0.05}$ & $\rm 25.28^{+0.01}_{-0.01}$ & 2.41 \\
Z7160 (e) & 0.258 & $\rm 44.93^{+0.03}_{-0.03}$ & $\rm 24.34^{+0.05}_{-0.05}$ & 2.24 \\
RBS 797 (f)   & 0.350  & $\rm 45.31^{+0.02}_{-0.02}$ & $\rm 24.63^{+0.04}_{-0.04}$  & 2.01 \\
\hline
\end{tabular}}
\medskip
References for the radio data in brackets: 
(a) Sijbring (\cite{Sijb93}),
(b) Bacchi et~al. (\cite{Bacc03}),
(c) Gitti et~al. (\cite{Gitt04}), 
(d) Gitti et~al. (2007), 
(e) Venturi et~al. (\cite{Vent08}),
(f) Gitti et~al. (\cite{Gitt06}), Gitti et~al., in~prep.
\end{table}