\begin{table}%t1
%\centering
\par
\caption{Sidereal angular velocity (in deg/day) derived from the global tracking for magnetic field ($\Omega_{\rm B}$), for horizontal divergence maps~($\Omega_{\rm div}$), and for smoothed Dopplergrams ($\Omega_{\rm dop}$).}\label{tabres}
\begin{tabular}{lccccccccc}
\hline \hline
Series & \# sets & $\Omega_{\rm B}$ & $C_{\rm B}$ & $\Omega_{\rm div}$ & $\Delta\Omega_{\rm div}$ & $C_{\rm div}$ & $\Omega_{\rm dop}$ & $\Delta\Omega_{\rm dop}$ & $C_{\rm dop}$\\
\hline
January 1997 & 46 & $14.27\pm0.03$ & 0.93 & $14.44\pm0.08$ & $0.17\pm0.08$ & 0.68 & $14.04\pm0.04$ & $-$$0.23\pm0.05$ & 0.92 \\
March 1997 & 15 & $14.11\pm0.03$ & 0.82 & $14.46\pm0.11$ & $0.35\pm0.11$ & 0.67 & $13.87\pm0.07$ & $-$$0.24\pm0.08$ & 0.88 \\
\hline
\end{tabular}
\end{table}