取值范围

频数

占比

Spread > 490.72

4

4.35%

245.36 < Spread < 490.72

9

9.78%

−184.02 < Spread < 184.02

70

76.09%

−490.72 < Spread < −245.36

7

7.61%

Spread < −490.72

2

2.17%