Table 1.
Indoor residential PM2.5 samplinga and corresponding ambient PM2.5 and temperature on sample days.
| Wood stove status (Phase) | Winter sampled relative to pre-change sample |
Number of homes |
Average indoor PM2.5 |
Average ambient PM2.5 |
Average ambient temperature, °C |
|---|---|---|---|---|---|
| Pre-change (1) | -- | 21 | 45.0 (33.0) | 25.3 (12.4) | 0.48 (5.62) |
| Post-change (2) | Same winter | 21 | 20.4 (26.5) | 18.3 (8.12) | −3.74 (4.23) |
| Post-changeb (3) | 2nd winter | 12 | 23.8 (15.3) | 18.5 (6.76) | −0.22 (6.36) |
| Post-changec (4) | 2nd winter | 12 | 21.2 (13.3) | 19.5 (3.53) | −2.13 (5.29) |
| Post-change (5) | 3rd winter | 15 | 18.0 (14.5) | 17.7 (6.85) | −2.55 (2.71) |
a
For non-smoking homes with at least one post-changeout sample.
b
Post-change sample day chosen to match closely to ambient temperature of pre-change sample day.
c
Post-change sample day chosen to match closely to ambient temperature of 1st winter post-change sample day.