Liaoning province
(n=12)
|
Average
|
37.1
|
112.6
|
23.6
|
0.20
|
6.8
|
0.061
|
51.9
|
21.7
|
6.5
|
|
Maximum |
68.6 |
190.4 |
31.6 |
0.42 |
9.3 |
0.145 |
74.3 |
27.4 |
7.2 |
|
Minimum |
13.6 |
48.5 |
17.9 |
0.08 |
3.5 |
0.018 |
40.0 |
12.9 |
5.9 |
|
Background |
19.8 |
63.5 |
21.4 |
0.11 |
8.8 |
0.037 |
57.9 |
25.6 |
6.6 |
Hebei province
(n=15)
|
Average
|
23.4
|
110.0
|
22.1
|
0.22
|
9.5
|
0.032
|
62.5
|
26.3
|
7.9
|
|
Maximum |
32.1 |
152.2 |
27.1 |
0.35 |
13.8 |
0.055 |
85.6 |
33.4 |
8.4 |
|
Minimum |
16.4 |
60.5 |
17.8 |
0.11 |
6.3 |
0.016 |
49.3 |
19.4 |
7.2 |
|
Background |
21.8 |
78.4 |
21.5 |
0.09 |
13.6 |
0.036 |
68.3 |
30.8 |
7.9 |
Shandong province
(n=17)
|
Average
|
28.4
|
123.9
|
19.6
|
0.27
|
7.5
|
0.040
|
67.3
|
30.7
|
7.9
|
|
Maximum |
57.8 |
272.4 |
23.9 |
0.57 |
10.2 |
0.070 |
134.2 |
47.8 |
8.8 |
|
Minimum |
17.8 |
60.1 |
16.8 |
0.18 |
4.4 |
0.020 |
47.8 |
23.1 |
6.6 |
|
Background |
24.0 |
63.5 |
25.8 |
0.08 |
9.3 |
0.019 |
66.0 |
25.8 |
7.7 |
Henan province
(n=16)
|
Average
|
65.6
|
167.3
|
24.6
|
0.58
|
11.1
|
0.062
|
54.3
|
25.9
|
7.4
|
|
Maximum |
128.1 |
273.8 |
32.2 |
1.22 |
14.9 |
0.143 |
66.6 |
32.8 |
7.6 |
|
Minimum |
16.6 |
65.0 |
17.6 |
0.21 |
9.2 |
0.017 |
47.0 |
21.1 |
7.0 |
|
Background |
19.7 |
60.1 |
19.6 |
0.07 |
11.4 |
0.034 |
63.8 |
26.7 |
7.8 |
Shaanxi province
(n=18)
|
Average
|
26.6
|
87.4
|
22.2
|
0.22
|
12.6
|
0.090
|
76.5
|
30.1
|
8.3
|
|
Maximum |
50.6 |
119.8 |
32.6 |
0.48 |
16.2 |
0.267 |
291.5 |
54.9 |
9.1 |
|
Minimum |
16.8 |
61.2 |
17.6 |
0.13 |
9.6 |
0.013 |
51.6 |
24.3 |
7.4 |
|
Background |
21.4 |
69.4 |
21.4 |
0.09 |
11.1 |
0.030 |
62.5 |
28.8 |
8.3 |
Ningxia Autonomous Region
(n=11)
|
Average
|
25.2
|
81.7
|
17.4
|
0.17
|
9.4
|
0.033
|
46.2
|
22.2
|
8.0
|
|
Maximum |
53.1 |
169.0 |
21.5 |
0.49 |
14.9 |
0.179 |
55.6 |
27.6 |
8.5 |
|
Minimum |
13.8 |
45.1 |
14.1 |
0.08 |
4.8 |
0.007 |
30.6 |
14.6 |
7.5 |
|
Background |
22.1 |
58.8 |
20.6 |
0.11 |
11.9 |
0.021 |
60.0 |
36.5 |
8.0 |
Jiangsu province
(n=12)
|
Average
|
17.2
|
78.7
|
19.9
|
0.12
|
7.1
|
0.050
|
61.7
|
26.4
|
7.6
|
|
Maximum |
21.5 |
100.7 |
22.3 |
0.20 |
8.9 |
0.085 |
71.6 |
31.5 |
8.1 |
|
Minimum |
14.1 |
70.1 |
18.2 |
0.08 |
5.2 |
0.027 |
55.1 |
21.8 |
6.7 |
|
Background |
22.3 |
62.5 |
26.2 |
0.13 |
10.0 |
0.029 |
77.8 |
26.7 |
7.8 |
Yunnan province
(n=25)
|
Average
|
106.6
|
140.5
|
70.2
|
1.28
|
10.7
|
0.125
|
98.3
|
48.2
|
6.7
|
|
Maximum |
202.2 |
250.8 |
322.1 |
6.67 |
45.6 |
0.376 |
163.9 |
101.1 |
8.6 |
|
Minimum |
26.4 |
70.0 |
18.6 |
0.31 |
1.7 |
0.019 |
52.2 |
22.9 |
4.6 |
|
Background |
46.3 |
89.7 |
40.6 |
0.22 |
18.4 |
0.058 |
65.2 |
42.5 |
5.7 |
Whole area
(n=132)
|
Average
|
47.2
|
115.6
|
31.4
|
0.47
|
9.6
|
0.069
|
68.9
|
31.0
|
7.5
|
|
Maximum |
202.2 |
273.8 |
322.1 |
6.67 |
45.6 |
0.376 |
291.5 |
101.1 |
9.1 |
|
Minimum |
13.6 |
45.1 |
14.1 |
0.08 |
1.65 |
0.007 |
30.6 |
12.9 |
4.6 |
|
National background value |
22.6 |
74.2 |
26.0 |
0.10 |
11.2 |
0.065 |
61.0 |
26.9 |
6.7 |
Over standard rate (%)[a] |
/ |
15.2 |
4.5 |
3.0 |
27.3 |
2.3 |
0.0 |
0.0 |
1.5 |
/ |