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18 July 2019

The fungal spore concentrations fluctuate between moderate levels on warm days and very low levels on days that are rainy or have very low temperatures. Ascospores and basidiospores increase after rain and Cladosporium levels increase on warm sunny days after rain. Pollen concentrations are generally low, but cypress trees are beginning their pollen release cycle, so Cupressaceae are a constant low presence in the atmosphere, together with occasional pine and oak pollen grains.