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. Author manuscript; available in PMC: 2022 Oct 1.
Published in final edited form as: Int J Biometeorol. 2021 Apr 20;65(10):1615–1628. doi: 10.1007/s00484-021-02128-7

Table 3.

Pollen indicators and definitions used to extract data from study population

Pollen indicator Operational definition
Main pollen season (MPS) start date First day of the main pollen season in which pollen is present in the atmosphere in significant concentrations at a location
Main pollen season (MPS) end date Last day of the main pollen season in which pollen is present in the atmosphere in significant concentrations at a location
Main pollen season (MPS) length Duration of time in which pollen is present in the atmosphere in significant concentrations at a location
Peak pollen date Day of the main pollen season in which the pollen concentration was the highest
Annual pollen integral (API) Cumulative daily pollen concentrations for that year
Average daily pollen concentration Average of daily pollen concentrations for that year
Peak pollen concentration The highest daily pollen concentration for that year