10 days   3 hits per number

  15            5

  20            6

  25            8

  30             9

  40            12

  50            15

  60 days    18 hits per number

 If you want to find out if a digit is overdue in a single position then divide the number of days by 3. 

 Ex:  Number #6 has been missing for 21 draws in first position.....so divide 21 by 3 =7 days out . It's just like a normal number missing in all positions for 7 days.