α = β

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

$G_1$

0.966

0.940

0.921

0.906

0.896

0.888

0.883

0.880

0.878

0.877

$G_2$

0.968

0.944

0.925

0.911

0.900

0.892

0.886

0.882

0.879

0.878

$G_3$

0.962

0.932

0.910

0.892

0.879

0.870

0.863

0.858

0.856

0.855

$G_4$

0.961

0.930

0.906

0.887

0.872

0.861

0.853

0.847

0.843

0.841