\begin{table}%t4
\caption{\label{t4}Two-component fit diameters (ring functions).}
%\centering
\small
\begin{tabular}{cccc}
\hline\hline
 Filter      &  {\it FWHM} [mas]      & {\it FWHM} [mas]      &  Brightness ratio      \\
             &  Large Comp. & Small Comp. &  Large/Small\\
\hline
$K$          &  228 $\pm$ 20    & 23.6 $\pm$ 4      &  0.046 $\pm$ 0.015       \\
$H$          &  217 $\pm$ 15    & 27.6 $\pm$ 4      &  0.085 $\pm$ 0.021       \\
\hline
\end{tabular}
\end{table}