Skip to main content
. 2017 May 25;125(5):057001. doi: 10.1289/EHP289

Figure 2.

Line graphs of daily, monthly, and seasonal PM subscript 10 levels measured in micrograms per cubic meter (Y-axis) plotted for the years 2007, 2008, 2009, 2010, 2011, 2012, and 2013 (X-axis). The seasonal PM subscript 10 graph is classified for spring, summer, autumn, and winter.

PM10 levels in Fuzhou, China during 2007–2013. PM10 levels in Fuzhou varied dramatically, with daily levels averaged at 69.4μg/m3. Daily PM10 levels exceeded 250 µg/m3 on 9 January (263μg/m3) and 23 February (268μg/m3), 2008; on 21 March (361μg/m3) and 23 (522μg/m3), 2010, peaking on 22 March (1,034μg/m3), 2010; and were as low as 7μg/m3 on 10 November 2011 and 16 December 2013. Levels that exceeded 300μg/m3 are not fully shown in the figure. The average monthly levels ranged between 56.1 and 72.9μg/m3, and the seasonal levels were generally higher in the spring and lower in the autumn.