Fig. 6. Isoboles for 5% (dotted line ), 50% (thick solid line ), and 95% (dashed line ) probability of tolerance to shaking and shouting, tetanic stimulation, laryngeal mask airway insertion, and laryngoscopy for the Fixed C50OHierarchical model. TLAR = tolerance to laryngoscopy; TLMA = tolerance to laryngeal mask airway insertion; TOSS = tolerance to shaking and shouting; TTET = tolerance to tetanic stimulation.