Table 3.
Weighted average respirable particle mass over the year, calculated by applying a weighting to each sample of 1 / (n × 3), where n = number of samples in that location in a season.
| Location | Number of samples | Standardized mean (μg/m3) | 95% Confidence interval | |
|---|---|---|---|---|
| Bedroom | Urban cement roof | 30 | 116 | 87.8 to 144 |
| Urban tiled roof | 12 | 233 | 133 to 333 | |
| Urban straw roof | 4 | 134 | 109 to 159 | |
| Rural cement roof | 19 | 175 | 134 to 217 | |
| Rural tiled roof | 22 | 125 | 50.6 to 199 | |
| Rural straw roof | 9 | 236 | 120 to 351 | |
| Combined roof urban | 47 | 166 | 117 to 215 | |
| Combined roof rural | 50 | 192 | 135 to 249 | |
| Veranda | Urban | 15 | 592 | 281 to 902 |
| Rural | 16 | 445 | 264 to 627 | |
| School | Urban | 14 | 121 | 82.4 to 160 |
| Rural | 8 | 123 | 37.5 to 209 | |
| Outdoors | Urban | 19 | 131 | 80.7 to 181 |
| Rural | 19 | 202 | 128 to 276 | |
| Kitchen cooking | Biomass together | 21 | 908 | 614 to 1203 |
| Non-biomass | 10 | 175 | 63.2 to 286 | |
| Kitchen no cooking | Biomass | 21 | 438 | − 138 to 1010 |
| Non-biomass | 8 | 213 | − 15.8 to 442 |