TABLE 2.
Nitrogen dioxide kitchen concentrations and personal exposures among women with biomass cookstoves in Puno, Peru
| N | Mean | SD | GM | GSD | Min | 25th %ile | Median | 75th %ile | Max | |
|---|---|---|---|---|---|---|---|---|---|---|
| Kitchen area: direct-reading | ||||||||||
| Highest hourly means (ppb) | 97 | 1027 | 781 | 723 | 2.6 | 70 | 415 | 826 | 1572 | 3901 |
| 24-h means (ppb) | 97 | 129 | 97 | 96 | 2.2 | 18 | 54 | 100 | 175 | 404 |
| Daily hours > 163 ppb | 97 | 3.0 | 2.1 | 2.0 | 3.4 | 0.0 | 1.3 | 2.8 | 4.5 | 9.8 |
| Kitchen area: passive badge | ||||||||||
| 48-h means (ppb) | 19 | 199 | 192 | 108 | 3.8 | 7 | 67 | 117 | 387 | 593 |
| Personal exposure: passive badge | ||||||||||
| 48-h means (ppb) | 22 | 23 | 16 | 18 | 2.3 | 2 | 11 | 19 | 34 | 64 |
Note: GM, geometric mean; GSD, geometric standard deviation; ppb, parts per billion; SD, standard deviation.