Ratios of O3 concentrations measured during driving and active commutes
O3 concentrations were measured during driving, walking and cycling commutes using Earthsense zephyrs. Four routes were taken.
Measruements were averaged by trip and ratios of O3 in car to active commute (i.e O3 car/ O3 walking or O3 car/ O3 cycle) were calculated for each trip and route.
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