Table 21.

Correlations of Nonsmoking P & D Driver Exposure Concentrations with Terminal Yard Upwind Concentrations^a

Compound	Correlation Coefficient
Trimethylpentane	0.6
Dimethylpentane	0.6
2-Methylhexane	0.5
Methylpentane	0.5
3-Methylhexane	0.5
Methylcyclohexane	0.4
Hexane	0.4
1,3-Butadiene	0.4
Benzene	0.5
Ethylbenzene	0.5
m&p-Xylenes	0.5
o-Xylene	0.5
Styrene	0.4
Toluene	0.5
MTBE	0.9
Acetone	0.5
Acetaldehyde	0.5
Formaldehyde	0.4
PM2.5	0.5
EC	0.5

^aAll Spearman correlations were significant at P < 0.01.