Fig. 2
From: Air pollution exposure associates with increased risk of neonatal jaundice

Partial response plots for the peak bilirubin levels with respect to pollution exposure times of PM2.5, SO2 and CO. The y-axis represents the marginal effects. The dashed lines represent 95% CI. The x-axis represents PM2.5 exposure time in (a), SO2 exposure time in (b), and CO exposure time in (c). The vertical lines adjacent to the x-axis represent the frequency of the data