Histogram showing the distribution of ℱ_r2 for the ZTF DR2 sample with the flux integral divided by 25 d (shaded orange) or divided by 20 d (dashed orange), compared to the distribution found for PTF and iPTF by Papadogiannakis et al. (2019a) (black). The median of the PTF+iPTF population is 1.5σ higher than the median of the ZTF DR2 population when the integral is divided by 25 d, but the ZTF distribution is consistent with the PTF+iPTF distribution if the integral is divided by 20 d instead.