Left: Distributions (with median set to zero) of log-density (top), and local overdensity (bottom) for all of the voxels in the redshift bin centered on z ∼ 2.51. The Gaussian and 2σ clipped Gaussian (red and green, respectively) are fit over both distributions. Right: Distribution of the mean overdensity (top) and standard deviation of overdensity (bottom) as a function of redshift. The functions are fit with a fifth-order polynomial (green line) in order to smooth over small fluctuations in redshift space.