\begin{table}%t1
\caption{Characteristics of the type III radiation diagram.} 
\label{Table1}
%\centering
\par
\begin{tabular}{c c c c c c} 
\hline\hline 
Frequency (kHz)  & Data points & $\varphi_0$ (deg) & $a$ & $\Delta\varphi_2$ (deg) & $\Delta\varphi_{10}$ (deg) \\ 
 940--740 & $2020$  & $-23 \pm  1 $ & $0.92 \pm 0.08$ & $96 \pm 2$ & $190 \pm 4$ \\ 
 540--388 & $1900$ & $-27 \pm 1$ & $ 0.87 \pm 0.09$ & $98 \pm 2$ & $196 \pm 4$ \\ 
 272--196 & $822$ & $-29 \pm 2$ & $ 0.78 \pm 0.11$ & $104 \pm 4$ & $212 \pm 8$ \\ 
 148--124 & $344$ & $-35 \pm 5$ &  $ 0.77 \pm 0.13$ & $106 \pm 4$ & $216 \pm 14$ \\ 
 104--80 & $212$ & $-55 \pm 6$ & $0.50  \pm 0.20$ & $124 \pm 12$ & $352 \pm 16$ \\ 
\hline 
\end{tabular}
\end{table}