Variables
Symbol
-α
-1
0
+1
+α
H
s
D
c
X
1
0.917
1.673
2.222
2.771
3.527
D
c
H
s
X
2
0.125
0.324
0.469
0.613
0.813
d
pav
/D
c
X
3
0.0405
0.0413
0.0420
0.0426
0.0435
G
sf
/G
mf
X
4
405
5.08
5.5
5.92
6.5
R
X
5
1.3
2.0
2.5
3.0
3.7
Table 2:
Level of independent variables.