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Table 1 Descriptive statistics of temperature, ozone concentrations, and population socioeconomic composition in each city

From: Ozone and childhood respiratory disease in three US cities: evaluation of effect measure modification by neighborhood socioeconomic status using a Bayesian hierarchical approach

City # Counties # ZCTAs Temp. (F) 8-hr max Ozonea (ppb) Socioeconomic Composition
# Monitors Mean (SD) Min Max IQR % <12th Grade Mean (SD) % Below Poverty Mean (SD
Atlanta 20 191 63.1 12 42.2 (17.3) 2.21 125 26.0 15.7 (8.10) 13.1 (7.84)
Dallas 12 253 68.8 19 42.0 (14.6) 2.23 118 19.7 17.5 (12.1) 14.0 (9.75)
St. Louis 16 256 57.9 18 40.0 (17.3) 0.15 115 25.4 15.9 (8.14) 12.5 (9.45)
  1. a Daily ZCTA-specific concentrations of ambient 8-h maximum ozone. Mean, SD, min., max., and IQR are summarized across days and ZCTAs
  2. Abbreviations: % <12th grade, percentage of the adult population (≥25 years old) with less than a 12th grade education; % below poverty, percentage of households living below the Federal Poverty Line; #, number; IQR interquartile range, Max maximum, Min minimum, ppb parts per billion, SD standard deviation; Temp average daily mean temperature in degrees Fahrenheit (F); ZCTA Zip Code Tabulation Area