Graph of daily Nitrogen Dioxide (N02) levels in Shanghai, 2000-2010

Graph of daily Nitrogen Dioxide (N02) levels in Shanghai, 2000-2010

Graph of daily Nitrogen Dioxide (N02) levels in Shanghai, 2000-2010

Graph of daily Nitrogen Dioxide (N02) levels in Shanghai, 2000-2010. Data before 6/1 is only N0x, which are significantly higher and skew the scale.