Day    Defective    
  1        7    
  2        5
  3       11
  4       13
  5        9
  6       12
  7       10
  8       10
  9        6
 10       14
 11        9
 12       13
 13        8
 14       11
 15       12
 16       10
 17        9
 18       12
 19       14
 20       12
 21       13
 22        7
 23        9
 24       12
 25        8
 26       14
 27       12
 28       12
 29       11
 30       13