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. Author manuscript; available in PMC: 2014 Aug 20.
Published in final edited form as: Environ Sci Technol. 2013 Jul 30;47(16):10.1021/es4027248. doi: 10.1021/es4027248

Table 4.

Pearson correlation coefficients for pairs of pollutant concentrations and mass fractions, separately for SUMMER (June, July, August) and WINTER (December, January, February).

Pollutant WINTER
TEOM PM2.5 CMAQ Elemental Carbon mass fraction CMAQ Ammonium mass fraction CMAQ Nitrate mass fraction CMAQ Organic Carbon mass fraction CMAQ Sulfate mass fraction NO2 SO2 CO O3
SUMMER TEOM PM2.5 --- −0.20 0.19 0.23 −0.50 −0.08 0.71 0.66 0.62 −0.54
CMAQ EC mass fraction −0.47 --- −0.36 −0.49 0.21 0.10 0.05 −0.22 0.09 −0.07
CMAQ Ammonium mass fraction 0.47 −0.61 --- 0.12 −0.51 0.47 0.11 0.12 0.13 −0.07
CMAQ Nitrate mass fraction 0.02 −0.01 0.19 --- −0.43 −0.71 0.18 0.38 0.01 −0.10
CMAQ OC mass fraction −0.57 0.41 −0.68 −0.19 --- 0.09 −0.39 −0.50 −0.28 0.42
CMAQ Sulfate mass fraction 0.50 −0.77 0.62 −0.25 −0.68 --- −0.14 −0.29 0.08 0.10
NO2 0.33 0.01 0.20 0.31 −0.32 0.06 --- 0.62 0.71 −0.63
SO2 0.44 −0.17 0.15 0.14 −0.31 0.14 0.37 --- 0.48 −0.42
CO 0.11 0.10 −0.02 0.13 −0.22 0.06 0.43 0.28 --- −0.43
O3 0.59 −0.40 0.34 −0.06 −0.22 0.24 −0.13 0.19 −0.30 ---