Overall Overview
Total pollen declined by 6, driven entirely by a drop in tree pollen. Total mold fell sharply by 6,372, reflecting broad and substantial declines across the largest mold contributors.
Tree, Grass, and Weed Pollen
- Tree pollen decreased by 6, with Cedar down by 6 and Other Tree down by 2, partially offset by Elm up by 2.
- Grass pollen remained at zero.
- Weed pollen remained at zero across all species.
Mold Spores
- The overall decline was dominated by large drops in Ascomycetes (-4,465) and Cladosporium (-1,578).
- Additional meaningful declines came from Basidiomycetes (-243) and Cercospora (-68).
- Smaller decreases were observed across multiple secondary species, many falling to zero.
- Partially offsetting these losses were increases in Algae (+30), Penicillium/Aspergillus (+28), and Epicoccum (+4).
Key Takeaways
- Pollen levels moved lower, with tree pollen nearly absent by the end of the period.
- Mold levels dropped dramatically, led by steep reductions in the two largest baseline contributors.
- Isolated increases in a few smaller mold categories did not materially affect the overall downward trend.
Table of Absolute Changes
| Category | Species | Absolute Change |
|---|---|---|
| Tree | Cedar | -6 |
| Tree | Other Tree | -2 |
| Tree | Elm | +2 |
| Mold | Ascomycetes | -4,465 |
| Mold | Cladosporium | -1,578 |
| Mold | Basidiomycetes | -243 |
| Mold | Cercospora | -68 |
| Mold | Algae | +30 |
| Mold | Penicillium/Aspergillus | +28 |
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