Number of freezing days (A) and elevation (B) in the study area (Fig. S1); climatic information: locations of the weather stations and mean precipitation levels and temperatures during June, July, and August 2010 (Fig. S2); fungicide treatments of the fields (Table S1); weather indicators during aerosol sampling and duration of sampling (Table S2); variables considered in the analysis of fungal alpha and beta diversity (Table S3); Good's coverage values and sequence data characteristics of samples (Table S4); taxonomic assignment of the OTUs (Table S5); frequency of the OTUs with at least two reads in aerosol and grain dust samples depending on the farming system (Table S6).
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