\begin{table*}[t]
\centering
\small
\caption{Protocol sensitivity on Structural-43. Random splits, in-city splits, and LOCO evaluation answer different questions.}
\label{tab:protocol-sensitivity-v5}
\resizebox{\textwidth}{!}{%
\begin{tabular}{llllllll}
\toprule
Target & Baseline & Random $R^2$ & In-city $R^2$ & LOCO $R^2$ & Random--LOCO & LOCO neg. $R^2$ & LOCO +/- \\
\midrule
Connectivity & ridge & 0.466 & -1.917 & -0.266 & +0.732 & 0.279 & 31/12 \\
Connectivity & tabular knn & 0.436 & -0.338 & 0.059 & +0.378 & 0.256 & 32/11 \\
Road & ridge & 0.571 & -0.816 & 0.213 & +0.358 & 0.209 & 34/9 \\
Road & tabular knn & 0.429 & -1.055 & 0.013 & +0.415 & 0.349 & 28/15 \\
\bottomrule
\end{tabular}
}%
\end{table*}