\begin{table}%t6
\caption{\label{naco_diffused}Diffused light model parameters. We considered an exponential model
$\Delta m_\lambda = a\ {\rm e}^{b \theta} + c$, where $\Delta m_\lambda$ is the surface magnitude
per arcsec$^2$ of the sky background at an angular distance $\theta$ of a
zero magnitude source, and $(a,b,c)$ are the adjusted model parameters. }
\small%\centering
\par
\begin{tabular}{lcccc}
\hline\hline
$\lambda$ & $J$ ($\theta \ge 3''$) & $H$ ($\theta \ge 3''$) & $K_{\rm s}$ ($\theta \ge 3''$) & $K_{\rm s}$ ($\theta \le 3''$) \\
\hline
$a$ & $-$7.281 & $-$7.969 & $-$8.035 & $-$9.068 \\$b$  & $-$0.163 & $-$0.194 & $-$0.228 & $-$0.638 \\$c$  & 13.226 & 13.247 & 13.018 & 10.305 \\
\hline
\end{tabular}
\end{table}