|   
  |       A  |       B  |       C  |       D  |    
|   K1  |       2.806  |       2.825  |       2.784  |       2.850  |    
|   K2  |       2.798  |       2.801  |       2.797  |       2.807  |    
|   K3  |       2.801  |       2.780  |       2.824  |       2.748  |    
|   极差  |       0.008  |       0.045  |       0.040  |       0.102  |    
|   优水平  |       D > B > C > A  |    |||
|   优组合  |       A1B1C3D1  |    |||