\begin{tabular}{lr}
\toprule
Factor (one at a time) & Median $|\Delta V|$ (\%) \\
\midrule
unit cost band & 5.4 \\
economic life 50 & 2.3 \\
soft+EI high & 7.8 \\
land not indexed & 5.7 \\
regional 1.10 & 6.4 \\
grade +1 & 8.8 \\
condition +1 & 6.4 \\
\bottomrule
\end{tabular}