Stock Photo - Reportage on the observatory accredited by the French Ecology, Sustainable Development and Energy Ministry to provide surveillance and information on air quality in the Auvergne-Rhône-Alpes area of France. A map showing levels of concentration of nitrogen oxides (NOx) per square kilometer in the Lyon area.

Stock Photo: Reportage on the observatory accredited by the French Ecology, Sustainable Development and Energy Ministry to provide surveillance and information on air.

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