Spring  |   Apr   |   May   |   Jun   
 ------- | ------- | ------- | ------- 
    1    |         |         |         
    2    |         |         |        
    3    |         |         |        
    4    |         |         |        
    5    |         |         |     
    6    |         |         |         
    7    |    x    |         |         
    8    |         |         |        
    9    |         |         |       
   10    |         |         |         
   11    |         |         |         
   12    |         |         |         
   13    |         |         |         
   14    |         |         |         
   15    |         |         |       
   16    |         |         |         
   17    |         |         |         
   18    |         |         |        
   19    |    x    |         |        
   20    |         |         |         
   21    |    x    |         |         
   22    |         |         |        
   23    |         |         |        
   24    |         |         |         
   25    |         |         |         
   26    |         |         |         
   27    |         |         |     
   28    |         |         |        
   29    |         |         |        
   30    |         |         |       
   31    |         |         |        
 ------- | ------- | ------- | ------- 
   tot   |         |         |     

 Winter  |   Jan   |   Feb   |   Mar   
 ------- | ------- | ------- | ------- 
    1    |         |         |         
    2    |         |         |        
    3    |         |         |        
    4    |         |         |         
    5    |         |         |        
    6    |         |         |         
    7    |         |         |         
    8    |         |         |     
    9    |         |         |    x    
   10    |         |         |        
   11    |         |         |         
   12    |         |         |         
   13    |         |         |         
   14    |         |         |         
   15    |         |         |        
   16    |         |         |        
   17    |         |    x    |        
   18    |         |         |         
   19    |         |    x    |        
   20    |         |         |         
   21    |         |         |         
   22    |         |         |        
   23    |         |    x    |        
   24    |         |         |         
   25    |         |         |         
   26    |         |         |         
   27    |         |         |     
   28    |         |         |         
   29    |         |         |    x    
   30    |         |         |        
   31    |         |         |        
 ------- | ------- | ------- | ------- 
   tot   |    0    |    3    |    2