\begin{tabular}{llll}
\toprule
{} &           Combined &             11 Hz &             30 Hz \\
\midrule
base\_in\_field &  0.48 ± 0.02 (101) &  0.47 ± 0.02 (61) &  0.48 ± 0.02 (40) \\
stim\_in\_field &  0.54 ± 0.01 (101) &  0.54 ± 0.02 (61) &  0.52 ± 0.02 (40) \\
Wilcoxon      &      380.00, 0.000 &      35.00, 0.000 &     143.00, 0.000 \\
\bottomrule
\end{tabular}