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. Author manuscript; available in PMC: 2011 Aug 29.
Published in final edited form as: Atmosphere (Basel). 2011 May 16;2(2):96–109. doi: 10.3390/atmos2020096

Figure 2.

Figure 2

Seasonal variations in vertical distributions of air pollutants measured in (a) outdoor, (b) indoor environment.

Note: Kruskal-Wallis test was performed to compare the measured air pollutant levels by FL, stratified by heating season and nonheating season. Significance at * p < 0.05. The white and black lines show individual observations, while the black and white areas show the distributions of observations at each FL for heating season and nonheating season, respectively. The dotted line indicates the overall geometric mean and the thicker solid line shows the geometric mean concentration of each FL level for each season. Σ8PAHnonvolatile includes benz(a)anthracene (BaA), chrysene/iso-chrysene (Chry), benzo(b)fluoranthrene (BbFA), benzo(k)fluoranthrene (BkFA), benzo(a)pyrene (BaP), indeno(c,d)pyrene (IP), dibenz(a,h)anthracene (DahA), and benzo(ghi)perylene (BghiP). Σ8PAHsemivolatile includes pyrene (Pye), phenanthrene (Phe), 1-methylphenanthrene (1Meph), 2-methylphenanthrene (2Meph), 3-methylphenanthrene (3Meph), 9-methylphenanthrene (9Meph), 1,7-dimethylphenanthrene (1,7DMeph), and 3,6-dimethylphenanthrene (3,6DMeph).