\begin{table}%t1
\caption {\label{tab1}Prominent periods table for DQ Her periodogram of SuperWASP subset data in the region of 0.1 to 2~days with 2000 trial periods (refer to Fig.~\ref{fig9}).}  
%\centering
\par
\begin{tabular}{c c c c}     
\hline\hline
\noalign{\smallskip}
Peak  & Frequency    &  Period & Power \\    % table heading
 &  Cycles/day  & (d)   \\  
 \hline   
  a &  5.16450 & 0.1936 & 171.1451  \\
  b &  6.16675 & 0.1622 & 136.9614  \\
  c &  4.16225 & 0.2403 & 134.5336  \\
  d &  9.33025 & 0.1072 & 116.6206  \\
  e &  7.16900 & 0.1039 & 68.9775   \\
  f &  8.32800 & 0.1201 & 65.3540   \\
  g &  3.17475 & 0.3160 & 64.2832   \\
\hline
\end{tabular}
\end{table}