|   实验号  |       1  |       2  |       3  |       反射率  |    
|   1  |       1  |       1  |       1  |       21.8947  |    
|   2  |       1  |       2  |       2  |       25.6713  |    
|   3  |       1  |       3  |       3  |       26.8768  |    
|   4  |       2  |       1  |       3  |       21.0752  |    
|   5  |       2  |       2  |       1  |       22.3497  |    
|   6  |       2  |       3  |       2  |       27.9690  |    
|   7  |       3  |       1  |       2  |       19.3405  |    
|   8  |       3  |       2  |       3  |       17.0697  |    
|   9  |       3  |       3  |       1  |       24.2407  |    
|   I  |       24.8143  |       20.7701  |       22.8284  |       
  |    
|   II  |       23.7980  |       21.6969  |       24.3269  |       
  |    
|   III  |       20.2170  |       26.3622  |       21.6739  |       
  |    
|   R  |       4.59730  |       5.59210  |       2.65300  |       
  |