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Performance metrics (RMSE and R2) comparing model predictions with the closest nearby PM2.5 monitoring observations.
| Model | Compared to all monitors RMSE (μg/m3) (and R2) | Compared to stable monitors (excluding monitors with less than 31 days of observations, 1% of the training data) RMSE (μg/m3) (and R2) |
|---|---|---|
| 2008–2016 model | 5.1 (0.647) | 4.2 (0.696) |
| 2008–2018 model | 6.2 (0.643) | 5.6 (0.581) |
