Distributions (top panels) and cumulative probabilities (bottom panels) of overdensity at 0.2 < z < 0.7 (left) and 0.7 ≤ z < 1.2 (right), respectively. The red- and blue-shaded histograms represent ETDs and LTDs, respectively. The corresponding means and standard deviations are provided in the top-right corner of the top panel. The probabilities derived from the K-S tests for the two subsamples are indicated in the lower right corners of the bottom panels.