Top: estimate of r₀ using the atmospheric variance measured from DM actuator commands for the 10 cm (left) and 15 cm (right) simulated atmospheres. The gray band represents the standard deviation, where both the mean and standard deviation are computed over all KL modes. We note that the two atmospheres are scaled versions of each other. Bottom: Atmospheric (green) and residual (blue) wavefront variances measured from the DM actuators and WFS shifts, respectively. The computed value of β from Eq. (8)is shown in gray.