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Table 1 Five-year mean and range of pollen and spore cumulative concentrations (grains/m3)

From: Proceedings of AllerGen 2019 Research Conference

  Vancouver Edmonton Winnipeg Toronto
Pollens
Mean [min, max] (in hundreds)
 Coniferous 210 [126, 364] 20 [10, 39] 32 [20, 56] 36 [19, 52]
 Deciduous 218 [110, 308] 53 [29, 108] 136 [95, 180] 131 [90, 172]
 Grasses 15 [11, 20] 15 [8, 25] 16 [8, 24] 10 [9–11]
 Weeds 8 [7, 9] 14 [10, 17] 29 [23, 37] 31 [28, 34]
Spores
Mean [min, max] (in hundreds)
 Ascomycetes 1420 [726, 2132] 1619 [543, 2362] 1558 [1274, 2171] 964 [712, 1246]
 Basidiomycetes 1429 [887, 1754] 1170 [389, 1650] 1229 [852, 1500] 1012 [917, 1179]
 Fungi imperfecti 1490 [1235, 2050] 2815 [2349, 2824] 3460 [2862, 4534] 1683 [1228, 2080]