National Trends in PM10 Concentrations in 2000 - 2014
| Year |
Mean |
Number of Trend Sites |
10th Percentile |
90th Percentile |
| 2000 |
92.0265060240964 |
415 |
38 |
124 |
| 2001 |
102.38313253012 |
415 |
38 |
120 |
| 2002 |
92.0120481927711 |
415 |
38 |
124 |
| 2003 |
99.1879518072289 |
415 |
36 |
138 |
| 2004 |
80.6939759036144 |
415 |
34 |
108 |
| 2005 |
76.7433734939759 |
415 |
35 |
107 |
| 2006 |
83.322891566265 |
415 |
36 |
116 |
| 2007 |
70.5172690763052 |
415 |
37 |
115 |
| 2008 |
68.9068273092369 |
415 |
35 |
108 |
| 2009 |
59.6064257028112 |
415 |
29 |
102 |
| 2010 |
62.4200803212851 |
415 |
31 |
91 |
| 2011 |
67.1959839357429 |
415 |
31 |
102 |
| 2012 |
67.0341365461847 |
415 |
29 |
126 |
| 2013 |
64.5542168674698 |
415 |
27 |
120 |
| 2014 |
64.1807228915662 |
415 |
27 |
109 |