α n

θ n ( min )

n

calc

meas

calc

meas

1

5.43 ± 0.02

5.5 ± 0.1

10.87 ± 0.03

10.93 ± 0.02

2

10.91 ± 0.03

11.1 ± 0.2

21.83 ± 0.07

21.89 ± 0.04

3

16.50 ± 0.05

16.6 ± 0.3

33.00 ± 0.10

33.14 ± 0.03

4

22.25 ± 0.07

22.5 ± 0.2

44.51 ± 0.14

44.68 ± 0.02

5

28.25 ± 0.09

28.6 ± 0.2

56.51 ± 0.18

56.75 ± 0.02