\begin{table}%t2
%\centering
\par
\caption{\label{tab:tab2}Maximum amplitude of the $p$-mode power variation as seen from different observational programs.}
\begin{tabular}{c c c c c c}\hline\hline
  & \multicolumn{5}{c}{Maximal power variation ($\%$)}\\
Interval&BiSON&GOLF&\multicolumn{3}{c}{VIRGO}\\
Name&&RED&RED&GREEN&BLUE\\ \hline
1st $p$-band&$-14 \pm 3$&$-13\pm 2$&$-10 \pm 2$&$-9\pm 2$&$-8\pm 2$\\ %\hline
2nd $p$-band&$-4 \pm 3$&$-7\pm2$&$-1 \pm 2$&$-1 \pm 2$& $-1\pm 2$\\ %\hline
3rd $p$-band&//&$2 \pm 2$&$1\pm2$&$0 \pm 2$& $3 \pm 2$\\ \hline
\end{tabular}
\tablefoot{Positive values indicate enhancement while negative values indicate suppression to the reference level.}
\end{table}