Key Source Analysis 1981

Component Key source categories (Sorted from high to low from left to right)Total (%) Not listed
SOx1 A 1 a
(26.4%)
1 A 4 b i
(20.3%)
1 A 2 f
(10.1%)
1 A 4 a
(7.6%)
1 A 2 d
(7.0%)
1 A 2 a
(6.4%)
1 A 2 e
(4.9%)
1 A 1 b
(4.8%)
1 A 4 c i
(3.3%)
2 C
(2.8%)
93.61
NOx1 A 3 b i
(29.5%)
1 A 3 b iii
(15.5%)
1 A 2 f
(10.9%)
1 A 1 a
(8.2%)
1 A 4 b i
(6.0%)
2 B 5
(5.2%)
1 A 2 a
(4.7%)
1 A 4 c ii
(4.5%)
1 A 2 d
(2.8%)
4 D 1
(2.1%)
89.44
NH34 B 1 b
(26.9%)
4 B 1 a
(25.3%)
4 B 8
(14.6%)
4 D 1
(14.5%)
4 B 9
(11.7%)
4 F
(2.1%)
95.10
NMVOC3 A
(18.9%)
1 A 3 b i
(16.5%)
1 A 4 b i
(16.1%)
3 D
(13.2%)
3 C
(7.6%)
3 B
(6.2%)
1 A 3 b v
(5.1%)
2 B 5
(3.6%)
1 A 3 b iv
(1.8%)
1 B 2 a iv
(1.7%)
90.63
CO1 A 3 b i
(39.8%)
1 A 4 b i
(29.3%)
1 A 2 a
(16.1%)
4 F
(1.6%)
1 A 4 b ii
(1.4%)
2 C
(1.4%)
1 A 4 c ii
(1.2%)
1 A 4 a
(1.2%)
1 A 2 f
(1.2%)
1 A 3 b iv
(1.0%)
94.21