Fig. 3

Boxplot of dose-volume quantities over the course of 16 fractions. Blue X represents planned quantities for each patient. Red + represents outlier fractions over the course of 16 fractions. Inset box: Median difference between planned quantities and daily quantities, with associated p value (Wilcoxon signed-rank test) for each patient P1–P8. Statistical abbreviations: N.S. = not significant (p > 0.05); * = significant (0.001 < p < 0.05); ** = very significant (p < 0.001)