Fig. 1From: Health effects of exposure to diesel exhaust in diesel-powered trainsCorrelation between air pollution components in diesel and electric trains. The data corresponds to 63 (UFP and black carbon measured with NanoTracer equipment and Aethalometer, respectively) and 55 (UFP measured with DiscMini equipment) days of exposure. Nitrogen oxides were measured over 3 days, corresponding to 18 periodsBack to article page