\begin{table}
\renewcommand{\thetable}{\arabic{table}c}
%\centering
\par
\caption{Infrared data on IRAS~18062+2410 (SAO~85766).}\label{t3}
\begin{tabular}{c|ccccc} \hline\hline
     & \multicolumn{5}{c}{IR data in magnitudes} \\ \cline{2-6}
IRAS & 8.7~$\mu$ & 10~$\mu$ & 11.4~$\mu$ & 12.6~$\mu$ & 19.5~$\mu$\\ \hline  
18062+2410 & 4.29 & 2.17 & 2.22 & 2.31 & $-$0.25\\
\hline
\end{tabular}
\end{table}