Mean globular cluster mass M _GC vs. galaxy mass M _dyn. Here, the mean GC mass is defined as M _GC = M _GCS/ N _GC and the total mass in the globular cluster system is calculated as described in Section 3.3. Symbols for the three galaxy types (E, S0, S/Irr) are as in previous figures. The diagonal line gives the best-fit relation (Table 2).