Figure 3From: Outdoor particulate matter and childhood asthma admissions in Athens, Greece: a time-series study Frequency of the CAA per five-day interval (2001-2004) as a function of the PM 10 quartiles along with the variation of the total number of CAA per five-day interval (white line) and the polynomial fitting (black line) for the younger (upper graph) and the older (lower graph) age groups.Back to article page