| Material Burnt | PM2.5 (g/kg) (Particulate Matter 2.5 micrometer size) | PM10 (g/kg) (Particulate Matter 10 micrometer size) |
| Almond | 4.1a, 4.5b | 4.3a, 4.8b |
| Barley | 7.4a, b | 7.7a, b |
| Corn | 5.0c, 6.0b, 11.7d | 6.2b, 10.7c |
| Rice | 2.4c, 3.2b, 13.0g | 3.3c, 3.5b, 3.7h |
| Walnut | 4.7b | 5.0b |
| Wheat | 0.8 - 4.7e, 3.6k, 4.0c, 4.7g, 5.4a, b, 7.6d | 5.7a, b, 7.0c |