|   实验号  |       因素  |    ||||
|   
  |       A  |       B  |       C  |       D  |       气体产率(Nm3·kg−1)  |    
|   1  |       1  |       1  |       1  |       1  |       2.86089  |    
|   2  |       1  |       2  |       2  |       2  |       2.80533  |    
|   3  |       1  |       3  |       3  |       3  |       2.75297  |    
|   4  |       2  |       1  |       2  |       3  |       2.76267  |    
|   5  |       2  |       2  |       3  |       1  |       2.86788  |    
|   6  |       2  |       3  |       1  |       2  |       2.76369  |    
|   7  |       3  |       1  |       3  |       2  |       2.85071  |    
|   8  |       3  |       2  |       1  |       3  |       2.72886  |    
|   9  |       3  |       3  |       2  |       1  |       2.82198  |