\begin{table}%t1 \par \caption{\label{table}Spot parameters: {\em expectation\/} values and 1-$\sigma$ uncertainties are listed. } \small%\centerline $${ \begin{tabular}{l|l|r|l|r|l} \hline \hline \multicolumn{2}{l}{\rule[-6pt]{0mm}{6mm} Parameter} &\multicolumn{2}{|l|}{Two-spot model} &\multicolumn{2}{|l}{Three-spot model} \\ \hline 1st latitude \rule[0pt]{0pt}{12pt} & $\beta_1$ &$ 77^\circ\hspace{-3pt}.3$ &$^{+1.1}_{-0.6}$&$ 44^\circ\hspace{-3pt}.5$ &$^{+2.0}_{-2.4}$ \\ 2nd latitude &$\beta_2$ &$-85^\circ\hspace{-3pt}.3$ &$^{+0.6}_{-0.9}$&$ 39^\circ\hspace{-3pt}.1$ &$^{+2.9}_{-3.2}$ \\ 3rd latitude &$\beta_3$ & -- & -- &$-80^\circ\hspace{-3pt}.8$ &$^{+0.8}_{-0.8}$ \\ rest intensity &$\kappa$ &$\simeq$$0$ &$^{}_{}$ &$0.88$ &$^{+0.02}_{-0.01}$ \\ limb darkening &$u$ &$\simeq$$1$ &$^{}_{}$ &$0.128$ &$^{+0.023}_{-0.024}$ \\ mean diff. rot. &$\Delta\Omega$ &$0.0022$ &$^{+0.0002}_{-0.0002}$&$0.1142$ &$^{+0.0002}_{-0.0002}$ \\ max. diff. rot. &$\Delta\Omega$ &$0.023$ & &$0.129$ & \\ residuals \rule[-6pt]{0pt}{10pt} &$\sigma$ &$6.0$ & &$2.6$ &\\ \hline \end{tabular}}$$ \smallskip The spot rest intensity is in units of the intensity of the unspotted surface. In the case of two spots modal values for the spot rest intensity and the limb darkening coefficient can only be given. Differential rotation is in rad/d. The meaning of mean differential rotation (with error bars given) and maximal differential rotation (without error bars) is explained in the text. The residuals are in mmag. \end{table}