Figure 4: ROC method plots (SN vs. 1-SP*) of average minimum protein probability of all consensus methods tested. ROC characteristics were plotted for A) all consensus methods, B) individual (O), C) the intersection (I), and D) the union (U) consensus methods filtered at a specified average minimum protein probability. The minimum protein is the probability that a protein’s identification is correct. The minimum protein probability values used were 20%, 50%, 80%, 90%, 95%, 99%, and 99.9%.