ADVANCEMENT OF THE SCIENCE
FIGURE 2
Historical Scatter Plot (A) and Box Plot (B) of Annual PM 2.5 Concentrations for 10 States in the United States, 2000–2022
25
A
20
15
10
5
0
1998
2000
2002
2004
2006
2008
2010
2012
2014
2016
2018
2020
2022
2024
Year
California Oregon Oklahoma Georgia Illinois Texas Pennsylvania Ohio Nevada Arizona
25
B B
20
15
10
5
0
California Oregon Oklahoma Georgia Illinois Texas Pennsylvania Ohio Nevada Arizona
22
Volume 89 • Number 3
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