Table 4.

Posterior mean ambient PM_2.5 levels and exposure levels, and demographic characteristics.

County	Ambient PM2.5 level (μg/m3)	Exposure level (μg/m3)	Percent male	Percent unemployed
Alamance	15.62906	13.83480	47	35
Chatham	15.64579	16.75560	48	36
Durham	15.65255	23.44071	47	34
Guilford	15.66802	28.88822	47	33
Johnston	15.61301	23.74197	48	34
Randolph	15.62650	24.23487	49	33
Wake	15.59123	12.85243	49	27