\begin{table}%t3
\caption{Identified periodic signals in Abell~43 from the combined data set.}             
\label{tablecomb}      
\small%\centerline
{
\begin{tabular}{c r r c c }   
\hline\hline                    
Name&  Freq & Period & Amplitude &Noise\\
&  (${\mu}$Hz) & (s) & (mma$^a$)&(mma) \\
\hline 
f1&164.62& 6075 & 0.8 & 0.15\\  
$\sigma$&0.08&3&0.1\\
f2 & 183.76& 5442 & 1.9&0.15 \\
$\sigma$&0.03&1.0&0.1\\
f3& 327.70  &3051.6 &0.9&0.20 \\
$\sigma$&0.07&0.7&0.1\\
f4& 363.79& 2748.8 & 0.9&0.20\\
$\sigma$&0.08&0.6&0.1\\
f5&373.12&2680.1&2.0&0.20\\
$\sigma$&0.03&0.2&0.1\\
f6&420.23&2379.7&1.0&0.20\\
$\sigma$&0.06&0.4&0.1\\
\hline    
\end{tabular}}
\smallskip
$^a$  Relative amplitude~$\times$~10$^{-3}$.
\end{table}