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. Author manuscript; available in PMC: 2021 Dec 1.
Published in final edited form as: Environ Int. 2020 Sep 24;145:106143. doi: 10.1016/j.envint.2020.106143

Table 3.

Performance of ensemble predictions in the independent test

All samples AQS samples USC ICV2 samples
Sample size 12,776 12,266 510
R2 (range) 0.87 0.87 0.82
RMSE (μg/m3) 2.29 2.30 2.70