\begin{table}%t3
\caption{\label{tbl:highlow}Comparison of mass estimates for different sections of the 
light curve of GK~Per.}
%\centering
\small
\begin{tabular}{lll}
 \hline 
 \hline
%&&&& \\[-8pt]
 \textbf{Part of light curve}  & \textbf{Mass ($M_{\odot}$) } & 
     \textbf{$\chi^2_{\rm red}$}    \\
%&&&& \\[-8pt]
  \hline 
 Low-flux period, without outbursts & 0.90 $\pm$ 0.12 & 0.78  \\
 Jan. 2005 outburst                 & 0.74 $\pm$ 0.05 & 1.66  \\
 Mar. 2007 outburst                 & 0.67 $\pm$ 0.03 & 1.24   \\
 Sum of the total period            & 0.78 $\pm$ 0.05 & 0.79    \\
 \hline 
\end{tabular}
\end{table}