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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]