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. Author manuscript; available in PMC: 2021 Dec 1.
Published in final edited form as: Atmos Environ (1994). 2020 Aug 11;242:117818. doi: 10.1016/j.atmosenv.2020.117818

Table 3(d).

Summer/Fall (July-October) average individual PAH concentrations (ng/m3) at the Fresno central site for PAHyears 2002–2017.

PAH year 2002 2007 2008 2014 2015 2016 2017 Change (ng/m3) from 2002 to 2017 Change (%) from 2002 to 2017
N 24 103 34 4 16 9 4 - -
ACY 0.22 0.34 6.43 0.37 0.21 0.30 0.18 −0.04 −18%
ACE 0.61 0.63 4.02 1.81 0.66 0.69 0.48 0.08 13%
FLU 2.47 2.07 24.35 4.66 1.92 1.91 1.48 −0.56 −23%
PHE 4.79 3.61 35.48 6.83 3.73 4.40 3.18 −0.39 −8%
ANT 0.03 0.09 0.06 0.29 0.10 0.40 0.78 0.37 1233%
FLT 0.83 0.89 5.38 1.71 1.12 1.35 0.62 0.52 63%
PYR 0.74 0.77 2.29 1.65 0.86 1.01 0.02 0.27 36%
RET * 22.20 3.87 0.09 0.05 0.51 0.01 * *
BAA 0.10 0.15 0.20 0.07 0.02 0.04 0.16 0.05 100%
CHR 0.05 0.20 0.44 0.07 0.04 0.10 0.23 −0.13 −48%
BBF 0.27 0.43 0.63 0.06 0.06 0.14 0.08 −0.08 −67%
BKF 0.12 0.28 0.38 0.04 0.02 0.04 0.02 −0.08 −57%
BAP 0.14 0.20 0.21 0.03 0.02 0.06 0.02 −0.05 −63%
ICP 0.31 0.23 0.33 0.03 0.06 0.10 0.08 −0.21 −68%
DBA 0.08 0.15 0.33 0.01 0.03 0.03 0.03 −0.24 −65%
BGP 0.37 0.47 0.43 0.08 0.09 0.13 0.18 −0.24 −65%
*

Insufficient measurement days for a valid average.