TABLE 2.
Summary Statistics for 24 h Mean PM2.5
| Outdoor PM2.5 (μg/m3) |
Indoor PM2.5 (μg/m3) |
|||
|---|---|---|---|---|
| Sampling days | Mean (sd) min, median, max | Sampling days | Mean (sd) min, median, max | |
| All facilities | 1249 | 8.6 (18.7) 0.0, 3.8, 305.0 | 1326 | 3.3 (11.3) 0.0, 0.7, 202.5 |
| Wildfire season | 491 | 15.0 (28.1) 0.3, 5.2, 305.0 | 478 | 7.6 (18.0) 0.0, 2.0, 202.5 |
| Non-wildfire season | 758 | 4.5 (4.9) 0.0, 2.9, 36.1 | 848 | 0.8 (1.1) |
| Wildfire day | 90 | 56.1 (46.5) 21.1, 40.3, 305.0 | 89 | 31.1 (32.3) 3.8, 21.3, 202.5 |
| Non-wildfire day | 1159 | 4.9 (4.8) 0.0, 3.4, 36.1 | 1147 | 1.3 (1.9) 0.0, 0.7, 15.0 |
| Non-wildfire day during wildfire season | 401 | 5.8 (4.7) 0.3, 4.1, 20.7 | 389 | 2.3 (2.6) 0.0, 1.3, 15.0 |
| Facility 1 total | 331 | 9.6 (15.2) 0.3, 4.2, 95.6 | 322 | 3.0 (7.0) 0.0, 0.6, 43.6 |
| Wildfire season | 122 | 17.4 (21.8) 1.2, 7.2, 95.6 | 113 | 7.1 (10.7) 0.2, 2.3, 43.6 |
| Non-wildfire season | 209 | 5.0 (5.5) 0.3, 3.4, 36.1 | 209 | 0.8 (1.2) 0.0, 0.4, 6.8 |
| Wildfire day | 32 | 48.5 (21.4) 21.7, 45.4, 95.6 | 31 | 21.1 (11.6) 4.8, 18.7, 43.6 |
| Non-wildfire day | 299 | 5.4 (5.2) 0.3, 3.7, 36.1 | 291 | 1.0 (1.3) 0.0, 0.5, 6.8 |
| Non-wildfire day during wildfire season | 90 | 6.4 (4.1) 1.2, 4.7, 15.8 | 82 | 1.7 (1.4) 0.2, 1.2, 6.2 |
| Facility 2 total | 329 | 7.0 (14.9) 0.0, 2.1, 132.3 | 332 | 4.6 (11.6) 0.0, 0.9, 103.2 |
| Wildfire season | 123 | 14.9 (22.0) 0.3, 4.5, 132.3 | 119 | 11.3 (17.5) 0.3, 3.1, 103.2 |
| Non-wildfire season | 206 | 2.2 (2.8) 0.0, 1.5, 22.1 | 213 | 0.8 (0.8) 0.0, 0.6, 5.2 |
| Wildfire day | 27 | 50.0 (23.7) 22.9, 46.6, 132.3 | 27 | 38.6 (18.9) 16.4, 37.0, 103.2 |
| Non-wildfire day | 302 | 3.1 (3.6) 0.0, 1.9, 22.1 | 298 | 1.6 (2.3) 0.0, 0.8, 15.0 |
| Non-wildfire day during wildfire season | 96 | 5.0 (4.4) 0.3, 3.2, 18.8 | 92 | 3.3 (3.3) 0.3, 1.8, 15.0 |
| Facility 3 total | 313 | 6.6 (10.4) 0.2, 3.5, 111.7 | 336 | 1.0 (2.7) 0.0, 0.2, 35.4 |
| Wildfire season | 123 | 9.5 (15.2) 0.3, 3.8, 111.7 | 123 | 2.0 (4.2) 0.0, 0.5, 35.4 |
| Non-wildfire season | 190 | 4.7 (4.6) 0.2, 3.2, 28.0 | 213 | 0.4 (0.6) 0.0, 0.1, 3.9 |
| Wildfire day | 17 | 38.6 (24.2) 21.1, 29.4, 111.7 | 17 | 9.0 (8.0) 3.8, 6.6, 35.4 |
| Non-wildfire day | 296 | 4.7 (4.6) 0.2, 3.3, 28.0 | 296 | 0.6 (0.9) 0.0, 0.2, 5.6 |
| Non-wildfire day during wildfire season | 106 | 4.8 (4.6) 0.3, 3.3, 20.7 | 106 | 0.9 (1.2) 0.0, 0.3, 5.6 |
| Facility 4 total | 276 | 11.7 (30.1) 0.2, 5.2, 305.0 | 336 | 4.7 (17.6) 0.0, 1.4, 202.5 |
| Wildfire season | 123 | 18.2 (44.0) 0.5, 6.2, 305.0 | 123 | 10.2 (28.2) 0.0, 2.4, 202.5 |
| Non-wildfire season | 153 | 6.6 (5.3) 0.2, 5.1, 28.1 | 213 | 1.4 (1.4) 0.0, 1.1, 10.1 |
| Wildfire day | 14 | 106.3 (92.3) 22.0, 85.7, 305.0 | 14 | 65.4 (60.9) 8.9, 51.3, 202.5 |
| Non-wildfire day | 262 | 6.7 (5.3) 0.2 5.0, 28.1 | 262 | 2.3 (2.2) 0.0, 1.5, 10.4 |
| Non-wildfire day during wildfire season | 109 | 6.8 (5.3) 0.5, 4.8, 19.2 | 109 | 3.1 (2.8) 0.0, 2.2, 10.4 |
Abbreviations: PM2.5, fine particulate matter; sd, standard deviation; Wildfire Day, Day with mean 24 h PM2.5 > 21 μg/m3 during wildfire season Only sampling days with >12 h of hourly data are included in the table; Wildfire Season, July through October.