x1

x2

x3

x4

x5

x6

x7

3.27

2.30

1.36

2.31

1.34

2.61

1.57

−0.66

−0.80

−1.05

−1.15

−1.28

−0.90

−1.20

1.85

0.88

3.76

1.88

3.01

2.43

3.07

−0.17

0.58

0.07

0.87

−1.10

2.05

−0.86

−0.09

−0.23

−0.22

2.15

−0.27

−0.49

0.10