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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 3.

Mobile Platform Pearson’s Correlation Coefficients, Winter

UFPN PN1 PNFine PN (1-3μm) BC NOx mob. O3 depl.
UFPN 0.9 0.6 0.67 0.64 0.63 0.52
PN1 0.9 0.56 0.7 0.73 0.62 0.46
PNFine 0.6 0.56 0.84 0.76 0.29 0.38
PN (1-3μm) 0.67 0.7 0.84 0.88 0.41 0.3
BC 0.64 0.73 0.76 0.88 0.33 0.29
NOx mob. 0.63 0.62 0.29 0.41 0.33 0.32
O3 depl. 0.52 0.46 0.38 0.3 0.29 0.32
VOC −0.089 −0.12 −0.049 −0.22 −0.16 −0.096 0.0061

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 using the medians derived for each sampling intersection after temporal adjustment as described in section 2.1.