Example 14. Bar graph with standard error bars that displays the means for each motet group (Mo8, FauvBr, IvTrem) for each sonority category at modus onset, and that includes a fourth bar that shows the distribution of these sonorities in the motet Colla iugo/Bona condit/LIBERA ME. The imperfect, and doubly imperfect categories of sonority have been collapsed into the single category I/DI