10 draws  3  hits per number (average over the 10 draws)

  15            5

  20            6

  25             8

  30             9

  40            12

  50            15

  60 draws 18  ...... hits per Digit...average.                                                       

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

 Ex:  If, ... number #6 has been missing for 21 draws in first position.....just divide (21 by 3  =7 days out) . Now it's easier to picture how really long it's been gone. In other words....

  It's just like a normal number missing in all positions for 7 days.