Figure S5: Regression results for the association between index of concentration at the extremes and cooling degree days (CDDs). Solid black lines indicate partial effect from a natural cubic spline with three knots, and dashed lines are 95% confidence intervals. All models are adjusted with fixed effects for county and year as well as a tensor product smooth of the latitude and longitude of the census tract’s population-weighted centroid by year. Binned hexagons of partial residuals are depicted as light blue (low values) to charcoal (high values).