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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(c).

Spring (March-June) average individual PAH concentrations (ng/m3) at the Fresno central site for PAHyears 2002–2018.

PAHyear 2002 2007 2008 2009 2015 2016 2017 2018 Change (ng/m3) from 2002 to 2018 Change (%) from 2002 to 2018
N 16 66 49 20 21 14 5 14 - -
ACY 0.11 0.26 0.25 0.65 0.3 0.66 1.04 0.68 0.57 518%
ACE 0.56 0.76 0.52 0.51 1.12 1.03 0.43 1.14 0.58 104%
FLU 1.27 1.19 1.26 1.23 3.68 2.21 1.30 2.02 0.75 59%
PHE 2.84 4.09 2.33 6.29 4.75 3.79 3.80 3.13 0.29 10%
ANT 0.05 0.15 0.69 0.06 0.15 0.24 0.24 0.77 0.72 1440%
FLT 0.71 0.78 0.58 1.27 1.17 1.27 1.41 0.66 −0.05 −7%
PYR 0.32 0.4 0.51 1.02 0.89 1.04 1.13 0.4 0.08 25%
RET * 1.02 0.56 1.13 0.19 0.35 0.72 0.21 * *
BAA 0.05 0.08 0.17 0.13 0.05 0.02 0.14 0.03 −0.02 −40%
CHR 0.1 0.13 0.22 0.32 0.12 0.1 0.32 0.10 0.00 0%
BBF 0.14 0.21 0.58 0.32 0.14 0.09 0.55 0.07 −0.07 −50%
BKF 0.07 0.08 0.17 0.08 0.06 0.03 0.22 0.03 −0.04 −57%
BAP 0.09 0.11 0.28 0.19 0.04 0.02 0.23 0.64 0.55 611%
ICP 0.44 0.22 0.48 0.57 0.12 0.08 0.50 0.07 −0.37 −84%
DBA 0.13 0.09 0.29 0.12 0.04 0.03 0.15 0.005 −0.13 −96%
BGP 0.22 0.18 0.47 0.27 0.15 0.11 0.59 0.07 −0.15 −68%
*

Insufficient measurement days for a valid average.