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The Scientific World Journal
/
2015
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Article
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Tab 5
/
Research Article
Assessment of Population Exposure to Coarse and Fine Particulate Matter in the Urban Areas of Chennai, India
Table 5
PM
2.5
vulnerability classes.
Class
PM
2.5
pollution range (
µ
g/m
3
)
Population (%)
Area ratio (%)
1
>75
94
89
2
75–50
5
10
3
50–37.5
1
1
4
<37.5
0
—