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. Author manuscript; available in PMC: 2017 May 1.
Published in final edited form as: Atmos Environ (1994). 2016 May;132:229–239. doi: 10.1016/j.atmosenv.2016.03.001

Table 7.

PSD vs. Mobile Pearson Correlation Coefficients, Winter

UFPN PN1 PNFine PN (1-3μm) BC NOx mob. O3 depl. VOC
Pentanes 0.32 0.43 0.21 0.41 0.49 0.36 −0.024 −0.04
Benzene 0.3 0.23 0.16 0.12 0.19 0.19 0.33 0.22
Toluene 0.071 0.074 -.034 0.074 0.095 0.031 −0.14 0.12
m-Xylene 0.45 0.48 0.33 0.36 0.45 0.32 0.19 0.18
o-Xylene 0.42 0.45 0.33 0.36 0.44 0.3 0.19 0.18
Nonane 0.42 0.45 0.32 0.29 0.37 0.31 0.25 0.17
Decane 0.22 0.18 0.18 0.12 0.23 0.021 0.13 0.13
Undecane 0.48 0.47 0.48 0.38 0.42 0.28 0.31 0.26
Dodecane 0.064 0.064 0.078 0.035 0.15 −0.062 0.083 0.096
NO2 0.6 0.51 0.53 0.43 0.38 0.39 0.48 0.3
NOx 0.6 0.53 0.47 0.44 0.47 0.48 0.51 0.2
O3 −0.2 −0.19 -.064 −0.08 0.073 −0.18 0.13 0.08

The 2 sided probability p = 0.01 critical value for Pearson’s correlation coefficients is 0.40 for N = 40. The correlations coefficients are calculated between the PSD data and the medians derived for each sampling intersection after temporal adjustment of the mobile platform data as described in section 2.1.