ρ_LGRB,corr(z) for four flux threshold cases of −12.5, −12.25, −11.9, and −11.6. The filled circles indicate the LGRB-RD corrected for intrinsic luminosity evolution. The filled circles are color coded with respect to the vertical dashed lines in the right panel of Figure 6. The black dashed lines show the SFRD from the P. Madau & M. Dickinson (2014) study. The peak of SFRD is renormalized to the peak of LGRB-RD for easier comparison.