Region
|
NH3 concentration at the air quality station (μg/m3)
|
Number of respondents (and %) exposed to different modelled NH3 concentration categories at their residences (μg/m3)
|
---|
|
Measured[a]
|
Modeled[b]
|
0-0.5
|
0.5-1
|
1-1.5
|
1.5-2
|
2-2.5
|
2.5-3
|
3-3.5
|
>3.5
|
---|
I
|
0.16 ± 0.00a
|
0.15 ± 0.01a
|
11 (100)
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
II
|
0.62 ± 0.03b
|
0.85 ± 0.15bc
|
0
|
7 (22)
|
14 (44)
|
8 (25)
|
3 (9)
|
0
|
0
|
0
|
III
|
0.53 ± 0.05b
|
0.90 ± 0.12c
|
0
|
13 (43)
|
10 (33)
|
4 (13)
|
1 (3)
|
1 (3)
|
0
|
1 (3)
|
IV
|
1.02 ± 0.02c
|
1.27 ± 0.16cd
|
0
|
0
|
8 (25)
|
8 (25)
|
10 (31)
|
3 (9)
|
3 (9)
|
0
|
V
|
1.34 ± 0.10d
|
1.54 ± 0.01d
|
0
|
0
|
0
|
1 (3)
|
18 (58)
|
6 (19)
|
1 (3)
|
5 (16)
|
VI
|
N/A
|
N/A
|
0
|
0
|
0
|
0
|
12 (27)
|
9 (20)
|
14 (32)
|
9 (20)
|
-
[a] Annual averaged NH3 concentration measured at air quality stations in 2008 and 2009, average ± standard deviation.
-
[b] NH3 concentration from emission-dispersion models at the location of the air quality station in 2008 and 2009, average ± standard deviation.
- Same letters within columns indicate no significant differences (P > 0.05).