\begin{table}%t2
\caption{Total magnitude measurements of components B and C.}\label{tab:BCmag}
\par
%\centering
\small
\begin{tabular}{cccccc}
\hline\hline  
        \multicolumn{3}{c}{Fragment B}            &              \multicolumn{3}{c}{Fragment C}      \\
Day of   & \multicolumn{2}{c}{Radius of aperture} & Day of   &  \multicolumn{2}{c}{Radius of aperture}\\
May 2006 & 10\arcsec & 20\arcsec                  & May 2006 & 10\arcsec & 20\arcsec                  \\
\hline  
3.979 & 10.6 & 9.8 & 4.042  & 10.7 & 10.0 \\
4.854 & 10.6 & 9.6 & 5.042  & 10.1 & 9.4 \\
8.896 & 7.9 & 7.2  & 9.054  & 10.3 & 9.5 \\
9.858 & 9.2 & 8.5  & 9.936  & 10.4 & 9.5 \\
\hline
\end{tabular}
\end{table}