Median fraction of ETGs as a function of the median crossing time (top panel) and velocity dispersion (bottom panel). The median values are estimated from three bins for the ETG fraction: 0−0.33, 0.33−0.66, and 0.66−1. For each x-bin, we identified all CGs and estimated the median fraction of ETGs, along with the median values of σ_G and H_ot_c. The error bars indicate the statistical uncertainty of a 90% confidence interval, which was determined using bootstrapping.