Environmental Engineering Reference
In-Depth Information
Table 4.4 (continued)
Na
+
Cl
Ca
þþ
Mg
þþ
Suggested
Model
Equation
Z
t
= 2.561 + (0.608(Z
t
−
1
)+a
t
) x(0.145
(Z
t
−
12
)+
Z
t
= 0.759 + 0.453(Z
t
−
1
)+a
t
Z
t
= 7.793 + 0.676(Z
t
−
1
)+a
t
Z
t
= 213.05 + 0.675(Z
t
−
1
)-0.113
(Z
t
−
2
)+a
t
ʵ
t
)
AIC
296.29
45.336
136.52
3034.66
SBC
307.4
52.743
143.92
3045.77
R-Square
0.89
0.79
0.86
0.95
Std. Error
0.394
0.259
0.302
37.826
Intercept
2.561
0.759
7.793
213.05
T
38.1248
27.718
145.29
42.818
Prob > lTl
<0.0001
<.0001
<.0001
<.0001
AR Lag1
0.6084
0.453
0.676
0.675
T
13.311
8.793
15.924
11.711
Prob > lTl
<0.0001
<.0001
<.0001
<.0001
AR Lag2
.
-
.
−
0.1125
T
.
1.953
-
-
−
Prob > lTl
.
0.05
-
-
SAR Lag12
0.145
.
-
-
T
2.5098
-
.
-
Prob > lTl
0.012
.
-
-
P-Value
0.99
0.99
0.99
0.95
RV
0.1552
0.0675
0.0915
1430.88
ME
E
E
E
E
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