β

n = 50

n = 100

n = 150

N

U

N

U

N

U

C

0.0305

0.0342

0.0146

0.0169

0.0112

0.0101

C-RS

0.0253

0.0281

0.0133

0.0152

0.0105

0.0095

I

0.0321

0.0330

0.0158

0.0155

0.0100

0.0105

I-RS

0.0266

0.0274

0.0144

0.0142

0.0094

0.0099