Fig. 1.

Boxplot of rectal volumes at initial planning CT-scan (0) and during treatment (week 1 to 8). The horizontal line represents the median, and the box covers the inter-quartile range. The ends of the whiskers show the range of observations less than 1.5 inter-quartile range from the box, and circles and asterisks show the more distant observations, more than 1.5 box-lengths and more than 3 box-lengths away from the box, respectively.