i bar

The starting horizontal coordinate of the bar x_i

Bar Arc length l_i/m

Border Arc tangent angle α_i /˚

1

0

0.24

0

2

0.24

0.91

4.54

3

1.14

0.93

11.8

4

2.05

0.96

19.25

5

2.95

1.02

27.07

6

3.86

0.91

34.71

7

4.61

1.02

42.35

8

5.36

1.2

51.11

9

6.11

1.61

62.23