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. 2013 Jul 23;121(10):1142–1147. doi: 10.1289/ehp.1306768

Table 1.

Model evaluation statistics in global, spatial, and temporal analyses comparing BlueSky with Monitor PM2.5.

Analysis IOA r NRMSE (%) FB
Global 0.53 0.40 18 –0.45
Spatial [mean (range)] 0.41 (0.02, 0.82) 0.32 (–0.17, 0.92) 66 (16, 538) –0.91 (–2.00, 1.03)
Temporal [mean (range)] 0.46 (0.02, 0.80) 0.31 (–0.36, 0.86) 52 (20, 224) –1.06 (–1.97, 1.30)
Abbreviations: FB, fractional bias; IOA, index of agreement; NRMSE, normalized root mean squared error; r, Pearson’s correlation coefficient.