ocr: 900 800F 100) 600 SC0E 4001 a 3001 200 100 : 100 D t0 20 30 40 50 50 70 80 90 100 Day Figure 48 Creation ofa hybrid model using the two models of Figure 3. Both models ores compared and a hybrid model is synthesized using the current "better" model, the one generating the better profif over the prior 20 days.