|   步骤1  |       分类 = Pandemic  |       分类 = Epidemic  |       总计  |    ||
|   实测  |       期望  |       实测  |       期望  |    ||
|   1  |       2  |       2.862  |       1  |       0.138  |       3  |    
|   2  |       3  |       2.590  |       0  |       0.410  |       3  |    
|   3  |       3  |       2.340  |       0  |       0.660  |       3  |    
|   4  |       1  |       0.874  |       2  |       2.126  |       3  |    
|   5  |       0  |       0.126  |       3  |       2.874  |       3  |    
|   6  |       0  |       0.084  |       3  |       2.916  |       3  |    
|   7  |       0  |       0.050  |       3  |       2.950  |       3  |    
|   8  |       0  |       0.035  |       3  |       2.965  |       3  |    
|   9  |       0  |       0.025  |       3  |       2.975  |       3  |    
|   10  |       0  |       0.013  |       5  |       4.987  |       5  |