|   重现期P (a)  |       内涝节点个数(-)  |       溢流率(%)  |    ||
|   轻微积水  |       轻微内涝  |       严重内涝  |    ||
|   1  |       1  |       1  |       0  |       3.03  |    
|   2  |       1  |       0  |       1  |       3.03  |    
|   3  |       2  |       0  |       1  |       4.55  |    
|   5  |       1  |       1  |       1  |       4.55  |    
|   10  |       5  |       1  |       1  |       10.61  |