Yes, on the right side, https://statmodeling.stat.columbia.edu/2020/05/16/what-a-difference-a-month-makes-polynomial-extrapolation-edition/ https://statmodeling

Yes, on the right side, https://statmodeling.stat.columbia.edu/2020/05/16/what-a-difference-a-month-makes-polynomial-extrapolation-edition/ https://statmodeling.stat.columbia.edu/2020/05/16/what-a-dif... So in addition to log-exp to prevent projections going negative, they clipped the end date at 4 Aug to prevent it from going back up to +inf