Fig. 3
From: Avoidable mortality due to long-term exposure to PM2.5 in Colombia 2014–2019
Comparison of ground- and model-based PM2.5 mean annual concentrations for 2019 in 28 cities. Scatter plot (a) and mean difference plot (b) compare ground-based concentrations with estimations based on ACAG model. Scatter plot (c) and mean difference plot (d) compare ground-based concentrations with estimations based on CAMSRA model. Note: In figures (a) and (c) the dotted lines represent the perfect correlation among measurements and the solid black lines represent the fitted regression line for the data. In figures (b) and (c) the dotted blue lines represent the ranges of the difference between model and ground data and the red lines represent the mean of the differences (solid red lines) and their 95% confidence intervals (dotted red lines)