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. Author manuscript; available in PMC: 2017 Jun 1.
Published in final edited form as: Sci Total Environ. 2016 Mar 5;554-555:178–185. doi: 10.1016/j.scitotenv.2016.02.136

Table 3.

Medians and interquartile ranges of pollutant concentrations from all repeated home visits and outdoor sampling sessions.

Indoor Pollutants n Median Interquartile range
PM2.5 (μg/m3) 94 41 25 – 62
Black Carbon (ng/m3) 93 988 720 – 1,400
Sulfur (μg/m3) 93 0.51 0.42 – 0.61
Ultrafine Particles (count/cm3) 102 19,000 10,000 – 32,000
Total VOCs (ppm) 96 0.32 0.24 – 0.61
Total VOCs (μg/m3) 96 1,283 830 – 2,200
Formaldehyde (ppm) 96 0.02 0.014 – 0.033
Outdoor Pollutants n Median Interquartile range
PM2.5 (μg/m3) 34 28 27 – 29
Black Carbon (ng/m3) 40 939 670 – 1,170
Sulfur (μg/m3) 41 0.6 0.4 – 1
Total VOCs (ppm) 7 0.1 0.09 – 0.2
Total VOCs (μg/m3) 7 429 350 – 710
Formaldehyde (ppm) 7 0.0053 0.004 – 0.006

n = number of observations for all homes that were sampled or outdoor sampling sessions