\begin{tabular}{llr}
\toprule
Factor & Level & Mean MdAPE \\
\midrule
Selection & least adjusted & 13.1 \\
Selection & nearest & 14.4 \\
Selection & compromise & 12.9 \\
Selection & most similar & 13.2 \\
Adjustment & conventional grid & 13.2 \\
Adjustment & GBM adjustments & 12.6 \\
Adjustment & hedonic grid & 13.1 \\
Adjustment & regional grid & 13.1 \\
Adjustment & local grid & 13.3 \\
Adjustment & time only & 14.7 \\
Adjustment & none & 15.4 \\
Adjustment & assessment ratio & 11.8 \\
Weighting & distance $\times$ recency $\times$ similarity & 13.6 \\
Weighting & 1/distance & 13.4 \\
Weighting & equal & 13.2 \\
Weighting & recency & 13.6 \\
Weighting & most similar & 13.1 \\
Reconciliation & mean & 13.6 \\
Reconciliation & median & 13.2 \\
\bottomrule
\end{tabular}