\begin{table}%t1
%\centering

\caption {\label{tab1}Basic parameters of the tadpole wavelet patterns with a~period $P$~=~81.4~s at
four selected frequencies ($t_{\rm max}$ is the tadpole head maximum in the wavelet power spectra).}
\begin{tabular}{cccc}
\hline
\hline
Frequency  & Start time & Duration & Time $t_{\rm max}$  \\
 $[$MHz]   &   [UT]     &   [s]    &       [UT]      \\
\hline
1602       & 16:38:09   &    89    &   16:40:19    \\
1653       & 16:38:09   &   184    &   16:40:12    \\
1700       & 16:38:07   &   170    &   16:40:06    \\
1752       & 16:38:05   &   160    &   16:39:57    \\
\hline
\end{tabular}
\end{table}