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Table 4 Correlations between tree pollen counts and the numbers of patients with tree pollen allergy

From: Impact of meteorological variation on hospital visits of patients with tree pollen allergy

Counts of tree pollen (grains/m3) No. of patients
  April May June July Total
March 0.86* 0.86* 0.74* 0.60 0.84*
April 0.92* 0.88* 0.59 0.85* 0.89*
May 0.38 0.42 0.44 0.61 0.50
  1. Data are Pearson's correlation coefficients. *P < 0.05