Frequencies for powner variable in parkwork dataset :

 Registered |
    Vehicle |
      Owner |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          4        0.40        0.40
          3 |         20        2.00        2.40
          6 |        977       97.50       99.90
          9 |          1        0.10      100.00
------------+-----------------------------------
      Total |      1,002      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016