\begin{table}%t1
\caption{Atomic data of \ion{K}{i} lines.}\label{table1}
%\centering
\small
\begin{tabular}{ccccc}
\hline\hline
& & & &  \\[-8pt]
$\lambda$~ [\AA] & $E_{\rm low}[ev]$ & Transition & $\log gf\varepsilon$$_{\odot}$ & $\log C_6$\\
\hline
& & & &  \\[-8pt]
 7664.92 & 0.00&  $4{\rm s}~^2{\rm S}_{1/2}{-}4{\rm p}~^2{\rm P}^{\rm o}_{3/2}$ & 5.27  & $-$31.00  \\
 7698.98 & 0.00&  $4{\rm s}~^2{\rm S}_{1/2}{-}4{\rm p}~^2{\rm P}^{\rm o}_{1/2}$ & 4.97  & $-$31.00  \\
& & & &  \\[-8pt]
\hline
\end{tabular}
\end{table}