\begin{tabular}{lrrrrrrrrr}
\toprule
Radius & $k=1$ & $k=3$ & $k=5$ & $k=7$ & $k=10$ & $k=15$ & $k=20$ & $k=30$ & $k=50$ \\
\midrule
$\le 0.5$ km & 20.1 & 17.4 & 16.9 & 16.7 & \textbf{16.7} & 16.7 & 16.8 & 17.0 & 17.0 \\
$\le 1$ km & 20.7 & 17.8 & 17.2 & 17.0 & \textbf{17.0} & 17.1 & 17.3 & 17.6 & 18.0 \\
$\le 2$ km & 21.0 & 18.0 & 17.5 & 17.2 & \textbf{17.2} & 17.4 & 17.5 & 17.8 & 18.3 \\
$\le 5$ km & 21.3 & 18.2 & 17.6 & 17.4 & \textbf{17.3} & 17.5 & 17.6 & 18.0 & 18.5 \\
$\le 10$ km & 21.3 & 18.2 & 17.6 & 17.4 & \textbf{17.3} & 17.5 & 17.6 & 18.0 & 18.4 \\
$\le 25$ km & 21.3 & 18.2 & 17.6 & 17.4 & \textbf{17.3} & 17.5 & 17.6 & 18.0 & 18.4 \\
\bottomrule
\end{tabular}