\begin{table}%t1
\par
\caption {\label{tab1}Unsigned differential rotation parameter {\it B} derived from the linear fit of the rotation averaged over 3~time frames 
(Aug.~2001--Dec.~2006; 
Aug.~2001--Mar.~2004; Apr.~2004--Dec.~2006) and sin$^2(\theta)$ for all latitudes [$-45^{\circ}$, $45^{\circ}$], southern hemisphere [$-45^{\circ}$, $0^{\circ}$] and northern hemisphere~[$0^{\circ}$,~$45^{\circ}$].}
%\centering
\par
  \begin{tabular}{ c c c c c c c c c c}
    \hline\hline
    \multicolumn{4}{c}{August 2001--December 2006} & \multicolumn{3}{c}{August 2001--March 2004} & \multicolumn{3}{c}{ April 2004--December 2006}\\
    \hline
                   & All latitudes  & North & South & All latitudes & North & South& All latitudes  & North & South\\
    SBCS    & $2.72\pm0.04$ & $2.77\pm0.04$ & $2.64\pm0.04$  & $2.70\pm0.03$& $2.70\pm0.04$ & $2.69\pm0.04$& $2.73\pm0.07$& $2.82\pm0.07$ &$2.59\pm0.08$ \\
    $3$~Mm  & $2.77\pm0.01$ & $2.74\pm0.01$ &  $2.73\pm0.01$ & $2.77\pm0.01$& $2.77\pm0.02$ &$2.70\pm0.02$ & $2.77\pm0.01$& $2.72\pm0.02$ &$2.76\pm0.02$ \\
    $6$~Mm  & $2.78\pm0.01$ & $2.77\pm0.01$ &  $2.73\pm0.01$ & $2.78\pm0.01$& $2.80\pm0.02$ & $2.70\pm0.02$& $2.78\pm0.01$& $2.74\pm0.02$ &$2.76\pm0.02$ \\
    $15$~Mm & $2.88\pm0.01$ & $2.90\pm0.01$ &  $2.80\pm0.01$ & $2.88\pm0.01$& $2.93\pm0.02$ & $2.77\pm0.02$& $2.88\pm0.01$& $2.87\pm0.02$ &$2.82\pm0.02$ \\
    \hline
  \end{tabular}
\end{table}