Traditionally. soft sensors are developed based on measurement data only. but here we consider a moving window (MW) soft sensor (SS) that uses data generated from a calibrated. rigorous model of the distillation columns of an FFC unit at Gazpromneft-Omsk Refinery. https://www.lightemupsequences.com/quick-find-Our-Seasons-The-World-in-Winter-Spring-Summer-and-Autumn-best-save/