> stem(x, par1, par2, par3)
  The decimal point is at the |
   4 | 5
   5 | 
   6 | 0
   7 | 3
   8 | 06
   9 | 7
  10 | 1358
  11 | 001345
  12 | 000125699
  13 | 111158889
  14 | 0236699
  15 | 012234455677788
  16 | 00334689
  17 | 00346689
  18 | 01122468
  19 | 00224477
  20 | 48
  21 | 0
  22 | 
  23 | 8
  24 | 
  25 | 04
  26 | 
  27 | 59
  28 | 
  29 | 5