Supervised instruction (S-factor), and the C-78 mode (zero workload) are excluded from consideration.
For cross-listed classes, the combined enrollment is considered. These are indicated with the Xlist code on the right. If the class capacity or enrollment is followed by a second number, that number applies to the total of the group of cross-listed classes. Class enrollment numbers preceeded by S* indicate that Stop Enrollment is set for the section

You can see additional conext for these classes on the Class Enrollment Monitoring reports