We linked up to three measurements of plasma nitrite concentrations obtained from @ students to @-h average concentrations of five criteria air pollutants -LSB- particle mass < @ m in aerodynamic diameter ( PM ( @ ) ) , carbon monoxide ( CO ) , sulfur dioxide ( SO ) , nitrogen dioxide ( NO ) , and ozone ( O ) -RSB- measured at two monitoring sites closest to Rutgers University campus ( @-@ miles ) in New Jersey during the years @-@ .