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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 5.

PSD Pearson’s Correlation Coefficients, Winter

Pentanes Benzene Toluene m-Xylene o-Xylene Nonane Decane Undecane Dodecane NO2 NOx
Pentanes 0.38 0.26 0.44 0.45 0.31 0.054 0.32 0.022 0.084 0.27
Benzene 0.38 0.43 0.47 0.46 0.35 0.22 0.44 0.15 0.43 0.51
Toluene 0.26 0.43 0.51 0.5 0.29 −0.004 0.25 −0.061 0.19 0.43
m-Xylene 0.44 0.47 0.51 0.99 0.76 0.39 0.74 0.3 0.49 0.79
o-Xylene 0.45 0.46 0.5 0.99 0.78 0.38 0.75 0.29 0.49 0.79
Nonane 0.31 0.35 0.29 0.76 0.78 0.48 0.87 0.32 0.5 0.64
Decane 0.054 0.22 −0.004 0.39 0.38 0.48 0.65 0.93 0.22 0.22
Undecane 0.32 0.44 0.25 0.74 0.75 0.87 0.65 0.46 0.63 0.64
Dodecane 0.022 0.15 −0.061 0.3 0.29 0.32 0.93 0.46 0.068 0.12
NO2 0.084 0.43 0.19 0.49 0.49 0.5 0.22 0.63 0.068 0.76
NOx 0.27 0.51 0.43 0.79 0.79 0.64 0.22 0.64 0.12 0.76
O3 0.1 0.28 0.27 0.077 0.065 −0.1 0.039 −0.13 0.2 0.014 0.2

The 2 sided probability p = 0.01 critical value for Pearson’s correlation coefficients is 0.40 for N = 40.