ΔRV_max histograms for 100 MC realizations for all 25 COSMIC models (light green blocks) and the AGGC ΔRV_max data (dots); the width of the blocks represents the 90% confidence region for each bin. The ΔRV_max distribution histograms cover the range from 5 to 1000 km/s, with 10 bins. Models with low α and q_set ≠ [3,5] ([A,B,C][1,2,4]) tend to underestimate the number os systems with lower ΔRV_max, and overestimate the systems with high ΔRV_max; models with low α and q_set = 5 greatly overestimate the number of systems with low ΔRV_max.