Root-mean-square of binned residuals versus bin size. The solid continuous red line is proportional to N ^−1/2 and is normalized to match the value for bin size N = 4. The top continuous green curve corresponds to bin residuals without pixel-phase decorrelation. Black crosses correspond to bin residuals with pixel-phase effect decorrelation. Remaining red-noise becomes apparent for bins larger than 50 data points (6.25 s).