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Summary of DustTrak and Gravimetric PM2.5 Concentrations and Their Ratios for Each Pair (n=30)
| DustTrak (µg/m3) |
Gravimetric Sampler (µg/m3) |
DustTrak |
Ratios | |
|---|---|---|---|---|
| Gravimetric | ||||
| Arithmetic meanA | 42.4 (36.8) | 20.9 (15.2) | 2.03 (0.67) | |
| Geometric meanB | 35.1 (1.74) | 18.0 (1.64) | 1.95 (1.42) | |
| Median | 32.5 | 17.8 | 2.04 | |
| Range | 13.4–192.6 | 8.0–75.3 | 0.92–3.74 | |
Standard deviation shown in parentheses.
Geometric standard deviation shown in parentheses.
