> stem(x, par1, par2, par3)
  The decimal point is 2 digit(s) to the right of the |
   0 | 23334455667777788999001111112222333334444444444555566667788888888999
   2 | 00000000011223333444556678
   4 | 
   6 | 
   8 | 
  10 | 
  12 | 4
  14 | 
  16 | 5