${\sigma }_{ϵ}^2$

0.25

0.5

1

2

4

CMMP-SPSRs

0.0210

0.0915

0.2727

0.3861

0.6433

RP

0.2228

0.7791

1.3481

1.7807

2.6642

%Improve

962.21

751.63

394.35

361.15

314.15