Criteria for the assessment of air quality levels in homogeneous areas

摘要

A methodology is proposed for the appraisal of the data to confront with air quality limits. The methodology assesses air quality levels on the basis of mean values calculated as an average of all data collected in homogeneous areas, from monitoring stations located in sites not conditioned from local sources emissions. The resulting value represents the air quality of the area better than a value obtained from a single station and could be a measure of the efficacy of actions implemented to improve or preserve air quality levels in that area.