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(a) Size distribution measurements made 10 m and 700 m from an urban freeway in Minnesota. Adapted from Kittelson, Watts, and Johnson (2004). (b) Particle number concentrations measured in traverses perpendicular to an interstate highway. Adapted from Jacobson et al. (2005). Panel C: Particle number weighted size distributions measured in traverses perpendicular to an interstate highway.
Adapted from Jacobson et al. (2005).
