Fig. 2From: Acute effects of ambient air pollution on outpatient children with respiratory diseases in Shijiazhuang, ChinaBox plots of five air pollutans in the cool, transition and warm season. Boxes indicate the interquartile range (25th percentile – 75th percentile); lines within boxes indicate medians; whiskers below boxes represent minimum values; whiskers and dots above boxes indicate maximum valuesBack to article page