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Table 2 Daily differences between county level HB estimates of PM2.5and AQS-based PM2.5concentrations by census regions and divisions

From: Statistical air quality predictions for public health surveillance: evaluation and generation of county level metrics of PM2.5for the environmental public health tracking network

Census region

Census division

AQS-based PM2.5concentration ranges

(0–8)μg/m3

(9–14)μg/m3

(15–35)μg/m3

(>35) μg/m3

  

Median absolute difference(μg/m3) *

Median relative difference(%)α

Median absolute difference(μg/m3)*

Median relative difference(%)α

Median absolute difference(μg/m3)*

Median relative difference(%)α

Median absolute difference(μg/m3)*

Median relative difference(%) α

Midwest

East North Central

0.2

4.8

0.0

−0.4

−1.0

−4.6

−3.4

−8.4

(−0.2 – 0.8)

(−3.9 – 16.0)

(−0.8 – 0.7)

(−7.2 – 6.7)

(−2.4 – 0.2)

(−11 – 1.0)

(−6.5 – -1.5)

(−14.5 – -3.6)

West North Central

0.2

3.5

−0.3

−3.3

−1.3

−6.7

−3.3

−7.5

(−0.3 – 0.6)

(−6.2 – 13.9)

(−1.2 – 0.4)

(−11.0 – 3.6)

(−2.7 – -0.2)

(−13 – -1.1)

(−4.9 – -1.6)

(−12.9 – -3.9)

Northeast

Middle Atlantic

0.3

6.8

0.0

0.0

−1.1

−5.1

−5.3

−12.2

(−0.2 – 1)

(−3.7 – 20.1)

(−1 – 0.9)

(−8.9 – 8.3)

(−2.9 – 0.4)

(−13.6 – 1.8)

(−12.3 – -2.3)

(−28.3 – -6.1)

New England

0.1

1.4

−0.6

−5.2

−1.6

−7.9

−3.7

−10.2

(−0.5 – 0.6)

(−9.7 – 14.1)

(−1.5 – 0.3)

(−14.6 – 3.1)

(−3.4 – -0.1)

(−16.6 – -0.6)

(−7.9 – -2.3)

(−19.6 – -6.1)

South

East South Central

0.3

5.8

0.0

0.3

−0.8

−4.0

−3.2

−7.7

(−0.2 – 1)

(−3.1 – 17.4)

(−0.7 – 0.8)

(−6.3 – 7.2)

(−2.0 – 0.3)

(−9.8 – 1.6)

(−6.6 – -1.3)

(−15.4 – -3.2)

South Atlantic

0.1

2.0

0.0

−0.3

−0.7

−3.3

−2.9

−7.5

(−0.4 – 0.7)

(−7.4 – 12.1)

(−0.8 – 0.7)

(−7.7 – 7.0)

(−1.9 – 0.4)

(−9.5 – 2.4)

(−5.5 – -1.1)

(−14.4 – -2.9)

West South Central

0.1

2.2

−0.3

−2.9

−1.0

−5.0

−4.7

−12.5

(−0.4 – 0.7)

(−5.8 – 12)

(−1.1 – 0.5)

(−10.1 – 4.3)

(−2.4 – 0.1)

(−12.1 – 0.6)

(−9.4 – -2.1)

(−24.1 – -5.3)

West

Mountain

0.1

1.7

−1.4

−13.7

−4.4

−23.3

−15.2

−35.3

(−0.5 – 0.7)

(−9.5 – 17.7)

(−2.7 – -0.3)

(−25.8 – -3.5)

(−8.5 – -1.9)

(−42.4 – -9.9)

(−25.2 – -8.2)

(−55.7 – -16.2)

Pacific

0.1

2.9

−0.6

−5.9

−2.9

−14.1

−10.9

−22.3

  

(−0.5 – 0.8)

(−9.6 – 17.6)

(−1.7 – 0.5)

(−15.8 – 4.5)

(−5.9 – -0.8)

(−28.9 – -4.0)

(−20.7 – -5.8)

(−43.1 – -12.5)

  1. *. Median difference with interquartile range.
  2. α Median relative difference with interquartile range.