SO2 Average Values for 2007-2009 in NC Counties

Table 1. The following table shows 3-year averages for the 99th percentile of daily maximum SO₂concentrations. The first column lists the county, the second lists the average value for that county. One county in this list, New Hanover, exceeded the national ambient standard of 75 PPB by 43 percent. The other counties were below the standard.