ocr: 001 05 - - - M 071 06- - Ln - JL - - - 05 L 04- 03 02 A1101-TOp: Draty 0.1 Estimate Figure 4: Top quality in a binary distillation column where the inputs to the model are the most recent process measurements. In Figure 3, optimum sampling delays were determined for each input. In this case, only the most recent input values were used. The result is degraded model performance. In some applications, the difference in performance can be very substantial.