|   实验号  |       1  |       2  |       3  |       反射率  |    
|   1  |       1  |       1  |       1  |       21.9437  |    
|   2  |       1  |       2  |       2  |       26.4167  |    
|   3  |       1  |       3  |       3  |       27.6310  |    
|   4  |       2  |       1  |       3  |       23.0420  |    
|   5  |       2  |       2  |       1  |       28.5590  |    
|   6  |       2  |       3  |       2  |       25.0764  |    
|   7  |       3  |       1  |       2  |       32.3505  |    
|   8  |       3  |       2  |       3  |       30.2668  |    
|   9  |       3  |       3  |       1  |       21.4537  |    
|   I  |       25.3305  |       25.7787  |       23.9855  |       
  |    
|   II  |       25.5591  |       28.4142  |       27.9479  |       
  |    
|   III  |       28.0237  |       24.7204  |       26.9799  |       
  |    
|   R  |       2.69320  |       3.69380  |       3.96240  |       
  |