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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.