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Graph plotting decrements in FEV1 (liters) during exposure to different levels of ozone. The mean response to exposure is represented by the yellow line with the red and blue shaded areas representing individuals with greater and lesser responsiveness to ozone. Graph plotting mean FEV1 decrements (liters) as a function of concentration for three different age groups.
Figure 7: Variability of
response to ozone exposure.

Source: Devlin et al. (1997)
Figure 8: Sensitivity to ozone exposure is age related.
Source: Devlin et al. (1997)