Table 3.
PM2.5 Source | Lag 0–29 | Lag 0–179 | Lag 0–364 | ||||||
---|---|---|---|---|---|---|---|---|---|
Mean(SD) | Median | IQR | Mean(SD) | Median | IQR | Mean(SD) | Median | IQR | |
Road Dust (RD) | 0.32 (0.29) | 0.24 | 0.29 | 0.33 (0.24) | 0.26 | 0.27 | 0.33 (0.22) | 0.26 | 0.28 |
Secondary Sulfate (AS) | 2.98 (2.57) | 2.41 | 2.33 | 3.00 (1.72) | 2.68 | 1.86 | 2.98 (1.33) | 2.84 | 1.57 |
Secondary Nitrate (AN) | 1.55 (1.64) | 0.99 | 1.89 | 1.51 (1.07) | 1.31 | 1.41 | 1.54 (0.74) | 1.41 | 0.88 |
Diesel (DIE) | 0.97 (0.64) | 0.79 | 0.7 | 0.97 (0.52) | 0.8 | 0.72 | 0.96 (0.47) | 0.78 | 0.71 |
Spark-Ignition Emissions (GAS) | 1.65 (1.12) | 1.44 | 1.54 | 1.63 (0.80) | 1.47 | 1.17 | 1.60 (0.66) | 1.5 | 0.92 |
Biomass Burning (BB) | 0.49 (0.43) | 0.39 | 0.44 | 0.48 (0.29) | 0.4 | 0.37 | 0.48 (0.25) | 0.42 | 0.35 |
Pyrolized Organic Rich (OP) | 1.14 (0.99) | 0.88 | 0.99 | 1.17 (0.79) | 0.98 | 0.76 | 1.22 (0.73) | 1.04 | 0.61 |
IQR=Interquartile range, SD=Standard deviation