\begin{table}%t1
\caption{\label{tab:1}Best-fit values of $\Delta A_V^{(k)}$ and  $\bar{A}_V^{(k)}$ for the three regions described in Sect.~\ref{sec:6}. }
%\centerline
{
\begin{tabular}{cccc}
\hline \hline\\[-3mm]
Region & $\Delta A_V^{(k)}$ & $\bar{A}_V^{(k)}$ & (99.9\% CL)$^{a}$ \\
\hline
1 & 0.10 & 0.42 & (0.25--0.50)\\
2 & 0.00 & 0.34 & (0.08--0.44)\\
3 & 0.15 & 0.32 & (0.15--0.51)\\
4 & 0.00 & 0.45 & (0.10--0.68)\\
\hline
\end{tabular}}
 \medskip
\par
 $^{a}$  The values between parenthesis give the limits of the 99.9\%
confidence intervals for  $\bar{A}_V^{(k)}$.
\end{table}