46
a.
b.
2015
c.
2010
55
50
45
40
35
30
25
20
15
10
5
1
1.0
0.8
0.6
0.4
0.2
0.0
MAPE 100.987
MAD
0 .140
MSD
0 .041
Accuracy Measures
n
Cd
0.116
Actual
Fits
Variable
Spatial Analysis Plot for Cd
Linear Trend Model
Cd = 0.0306 + 0.00682×n
55
50
45
40
35
30
25
20
15
10
5
1
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
MAPE 176.217
MAD
0 .161
MSD
0 .071
Accuracy Measures
n
Cd(N)
0.085
Actual
Fits
Variable
Spatial Analysis Plot for Cd(N)
Linear Trend Model
Cd(N) = -0.0076 + 0.00775×n
45
40
35
30
25
20
15
10
5
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
MAPE 57.8647
MAD
0 .0735
MSD
0 .0163
Accuracy Measures
n
Cd_1
0.11
Actual
Fits
Variable
Spatial Analysis Plot for Cd_1
Linear Trend Model
Cd_1 = 0.111 + 0.00144×n
Fig. 2.4 Spatial analysis plot of Cd (linear model). (a) 2015 Cd concentration data; (b) 2015 Cd
normalized concentration data; (c) 2010 Cd concentration data
S. Allajbeu et al.