1\begin{tabular}{lr}2\toprule3Factor (one at a time) & Median $|\Delta V|$ (\%) \\4\midrule5unit cost band & 5.4 \\6economic life 50 & 2.3 \\7soft+EI high & 7.8 \\8land not indexed & 5.7 \\9regional 1.10 & 6.4 \\10grade +1 & 8.8 \\11condition +1 & 6.4 \\12\bottomrule13\end{tabular}14