\begin{table} %t8
\caption{\label{tab:freqsec}Frequencies detected in the pixel-by-pixel intensity variations of the secondary component of RS~Cha.}
\small%\centerline
{
\begin{tabular}{lccc} 
\hline\hline\noalign{\smallskip}
ID      & Freq.    & $A_{\rm PIV}^{{a}}$ & $S/N$\\
       & \cd      & \kms &\\ \hline
$f_{{\rm orb}}$    &    0.599  & 0.060 & 5.7 \\
$2f_{{\rm orb}}$   &    1.197  & 0.138 & 8.2 \\
$f_1$                 &    12.81  & 0.066 & 3.9$^1$\\  
$f_{2b}$                &    19.11  & 0.061 & 5.7 \\
$f_3$                 &    24.56  & 0.054 & 4.0 \\\hline 
\end{tabular}}
\smallskip
 $^{{a}}$ $A_{\rm PIV}$ represents the integral of the pixel-amplitude across the line \mbox{profile}.\\
$^1$ This frequency has a $S/N=5$ in the CoG time-series. Therefore, we relaxed the significance criterion for this frequency in the PIV.  
\end{table}