              
                 
                  
               
           
                     
                 
                 
              
            
                        
                                                     
                                                    
                                                      
                      
         
                    
                   
               
      
                    
              10  40 
     5  20            
          300    75 
150      10  20            
               
           0.02  0.05      
0.005  0.01              
 