Factors

Hours/Pollutants

Classes of Values

Factor 1

6/NO₂ (97)

6/CO (97)

4/CO (96)

5/CO (95)

5/NO₂ (92)

19/CO (89)

20/CO (88)

4/NO₂ (86)

c2 (92)

c6 (91)

Factor 2

13/CO (83)

12/CO (82)

c3 (44)

c4 (43)