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Fig. 2 | Environmental Health

Fig. 2

From: Exploring associations between multipollutant day types and asthma morbidity: epidemiologic applications of self-organizing map ambient air quality classifications

Fig. 2

A 3 × 3 SOM of 9 multipollutant day types observed in Atlanta, GA, from January 1, 1999 to December 31, 2008. For each type, profile bars reflect the average (±SD) pollutant concentrations on assigned days zeroed to the overall mean on a percentage scale. Coordinate labels are in brackets [] and the relative frequencies (%) and within-class sample size (n) are presented in the upper right hand corner of each panel

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Environmental Health

ISSN: 1476-069X