Table 2

Pearson correlations among pollutant variables in Spokane2-159 and Seattle, and among PM10, SO2 and O3 in Spokane

  • EC = elemental carbon; OC = organic carbon.

  • 2-159 Data from Haller et al.22

  • 2-150 Elemental sulphur.

  • 2-160 K is measured as soluble potassium.

  • 2-165 Stagnation persistence index (see text).