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Table 3 Assessment of pollen counts according to the definition of the German Meteorological Service

From: Prospective validation of the “rhino conjunctivitis allergy-control-SCORE©” (RC-ACS©)

Pollen No exposure Weak exposure Moderate exposure Strong exposure
   [grains/m3] [grains/m3] [grains/m3]
Hazel 0 1-10 11-100 > 100
Alder 0 1-10 11-100 > 100
Birch 0 1-10 11-50 > 50
Grasses 0 1-5 6-30 > 30
Rye 0 1-2 3-6 > 6
Mugwort 0 1-2 3-6 > 6
Ragweed 0 1-5 6-10 > 10