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. Author manuscript; available in PMC: 2016 Feb 9.
Published in final edited form as: J Allergy Clin Immunol. 2015 Jul 14;137(2):390–399. doi: 10.1016/j.jaci.2015.05.028

Figure 2.

Figure 2

Reduced post-bronchodilator (BD) FEV1 /FVC (left graph panel) was associated with 4-month averages of ozone and carbon monoxide, but not with nitrogen dioxide or sulfur dioxide. Carbon monoxide also associated with pre-BD ratio (right graph panel).