${\theta }_{rk}$

K

1

2

3

4

5

6

7

8

9

10

r = 1

0.2

0.8

0.7

0.2

0.2

0.9

0.1

0.1

0.7

0.7

r = 2

0.9

0.3

0.3

0.7

0.8

0.4

0.7

0.6

0.4

0.4

r = 3

0.1

0.9

0.9

0.1

0.3

0.1

0.4

0.3

0.6

0.6

r = 4

0.7

0.2

0.2

0.6

0.7

0.6

0.8

0.9

0.1

0.1