\begin{table}%t3
\caption{Differential reddening $(\Delta\ebv)$ in NGC~3960.}
\label{tab3}
\small%\centerline
{
\begin{tabular}{c|ccccccc|c}
\hline \hline
$\Delta Y (\arcmin)$&\multicolumn{7}{c|}{$\Leftarrow\Delta X (\arcmin)\Rightarrow$}\\
$\Downarrow$ &$+15.0$&$+10.0$&$+5.0$&$0.0$&$-5.0$&$-10.0$&$-15.0$&\avgE\\
\hline
$+15.0$&$-0.10$&$+0.06$&$+0.05$&$+0.16$&$-0.03$&$-0.02$&$+0.16$&$0.04\pm0.10$\\
$+10.0$&$+0.06$&$+0.11$&$~0.00$&$+0.03$&$+0.14$&$+0.16$&$+0.05$&$0.08\pm0.06$\\
$+5.0$ &$+0.03$&$~0.00$&$+0.03$&$+0.02$&$-0.06$&$+0.08$&$+0.21$&$0.04\pm0.08$\\
$~0.0$  &$+0.02$&$-0.02$&$-0.06$&$~0.00$&$-0.10$&$+0.08$&$+0.18$&$0.01\pm0.09$\\
$-5.0$ &$+0.14$&$+0.03$&$-0.03$&$+0.02$&$+0.05$&$+0.13$&$+0.05$&$0.06\pm0.06$\\
$-10.0$&$+0.16$&$+0.03$&$-0.06$&$+0.14$&$+0.08$&$+0.16$&$+0.03$&$0.08\pm0.08$\\
$-15.0$&$-0.08$&$+0.02$&$+0.21$&$+0.14$&$~0.00$&$+0.11$&$+0.18$&$0.08\pm0.10$\\
\hline
\noalign{\smallskip}
\avgE&$0.03\pm0.10$&$0.03\pm0.04$&$0.02\pm0.09$&$0.07\pm0.07$&$0.01\pm0.08$&$0.10\pm0.06$&$0.12\pm0.08$ \\
\hline
\end{tabular}}
\medskip
Notes. Uncertainties in $\Delta\ebv$ are of the order of $\pm0.05$. For absolute values: $\ebv=0.13+\Delta\ebv$.
\end{table}