Since, following the PQM method, all results were recorded as a percentage of the predefined maximum possible score (whether combined or for individual objectives), a higher number always means a more desirable result, whether the context is covering or sparing. The only exception is the last two lines in Table 3, which contain absolute values. Not every OAR was segmented and evaluated for every plan (see the last column in Table 3 showing in parenthesis the number of cases where each objective was scored). However since for each patient the same set of OARs was evaluated, the cumulative score comparison between the different plans for the same case is still valid.