Statistical analysis of gaseous air pollutant concentrations at urban, rural and motorway locations

Abstract

Air quality measurements (of predominantly transport‐related pollutants) were made at three sites of contrasting degrees of motor traffic influence. Fitting normal, log‐normal and censored log‐normal distributions to the air pollutant data indicated that the data was log‐normally distributed. Little benefit was obtained by censoring low concentrations of the pollutants. Multiple regression analysis demonstrated significant autocorrelation within the data.