The data displays the inhalable particulate matter (PM10) level in key environmental protection cities in China from 2011 to 2015. In 2011, the PM10 level in Chinese environmental protection cities had reached 0.085 milligrams per cubic meter.
2011 | 85 |
2012 | 83 |
2013 | 118 |
2014 | 105 |
2015 | 87 |