\begin{table}%t7
\caption{\label{tab:A1240_relics}Abell 1240.}
\small%\centerline
 {
\begin{tabular}{c  c c c c c c} 
\hline\hline
Source name &  Proj. dist & LLS         & $F_{\rm 20~cm}$  &  $F_{\rm 90~cm}$ & $B_{\rm eq}$ -- $B'_{\rm eq}$     & $\langle \alpha \rangle$ \\ 
            &  kpc        & kpc         & mJy         &  mJy        & $\mu$G     &             \\
\hline
Abell 1240-1 &  270$''$ = 700 & 240$''$ = 650  &6.0 $\pm$ 0.2  & 21.0 $\pm$ 0.8& 1.0--2.4   & 1.2  $\pm$ 0.1  \\
Abell 1240-2 &  400$''$ = 1100& 460$''$ = 1250 &10.1 $\pm$ 0.4  & 28.5 $\pm$ 1.1& 1.0--2.5  & 1.3   $\pm$ 0.2  \\
\hline 
\end{tabular}}
\medskip
Column~1: source name; Col.~2: projected distance from the X-ray centroid; Col.~3: largest linear
scale measured on the 20~cm images; Cols.~4 and~5: flux density at 20 and 90~cm; Col.~6: equipartition magnetic field computed at fixed frequency~-- fixed energy (see Sect.~\ref{sec:A1240pol}); Col.~7: mean spectral index in region where both 20~cm and 90~cm  surface brightness is~$>$3$\sigma$.
\end{table}