The Evolution of Temporal and Spatial Patterns of Carbon Monoxide Concentrations in the Metropolitan Area of Sao Paulo, Brazil

Figure 7

Image of stations. (a) SP10 (source: Google Earth, 16 Oct 2014, 08 Dec 2014), (b) SP3 (source: Google Earth, 14 Dec 2008, 08 Dec 2014), (c) SP2 (source: Google Earth, 16 Oct 2014, 08 Dec 2014), and (d) SP12 (source: Google Earth, 14 Dec 2008, 08 Dec 2014).