组别

均值

CV值(除去最大与最小的5%后)

RIV

1

47,378

0.592

0.303

2

81,581

0.387

3

89,415

0.619

4

130,571

0.370

5

138,809

0.440

6

192,835

0.389

7

234,987

0.424

8

375,548

0.393