RAD values are supposed to be equivalent to a certain percentage reduction in growth from the disk, so RAD20 should be a 20% reduction in growth from the outside of the plate. However currently the dataframe made by createDataframe has RAD20 listed at the shortest distance and RAD80 as the longest based the plots generated during maxLik (i.e. RAD20 seems to reported as the dark blue point and RAD80 to the light blue point). FoG20 and FoG80 also appear to be switched, based on estimations of the areas on the maxLik plots. This appears to be an error for the current version of diskImageR we have generated data with and the version used on the example data for maxLik and createDataframe in the vignette, however not for the version used in the original paper.