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. Author manuscript; available in PMC: 2015 Sep 1.
Published in final edited form as: J Occup Environ Hyg. 2015 Sep;12(9):577–587. doi: 10.1080/15459624.2015.1022652

TABLE III.

Spearman correlation matrixes among continuous diesel exhaust measurements (ECrealtime, PM2.5, PNC, and CO).

Spearman Coefficient
p-value
(Sample Number)		 ECrealtime PM2.5 PNC CO
ECrealtime - 0.88
<.01
(3,381)		 0.88
<.01
(3,623)		 0.86
<.01
(3,623)
PM2.5 - 0.83
<.01
(3,381)		 0.85
<.01
(3,381)
PNC - 0.86
<.01
(3,623)
CO -

Note: Correlation coefficients in bold (p<0.05) and with underline (rs>0.8).