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. 2006 Jan 13;114(5):725–729. doi: 10.1289/ehp.8485

Table 3.

Descriptive analysis of PM10, PM2.5, BC, Al, Si, S, K, and Mn in the entire study period and during burning and nonburning seasons.

Entire period
Burning period
Nonburning period
Pollutant Mean ± SD IQR Mean ± SD IQR Mean ± SD IQR
PM10 (μg/m3) 56.1 ± 49.8 42.9 87.7 ± 57.9 89.5 28.9 ± 12.8 15.0
PM2.5 (μg/m3) 16.1 ± 12.4 10.2 22.8 ± 14.7 17.3 10.0 ± 4.6 5.5
BC (μg/m3) 2.1 ± 2.0 1.9 4.2 ± 2.3 2.9 1.8 ± 0.7 1.0
Al (ng/m3) 166.3 ± 260.7 193.7 370.8 ± 317.5 480.1 157.9 ± 149.7 124.9
Si (ng/m3) 404.5 ± 369.1 275.7 545.3 ± 462.9 669.2 283.9 ± 201.8 234.6
S (ng/m3) 1362.1 ± 1,049.2 1009.6 1922.9 ± 1,237.5 1370.5 881.4 ± 497.2 492.7
K (ng/m3) 380.2 ± 359.0 383.5 626.6 ± 390.4 539.1 168.9 ± 113.4 114.2
Mn (ng/m3) 12.6 ± 10.0 9.0 16.9 ± 12.4 12.3 8.8 ± 4.6 6.82