Frequencies for powner variable in parkwork dataset :

 Registered |
    Vehicle |
      Owner |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          9        0.85        0.85
          3 |         20        1.88        2.73
          6 |      1,035       97.27      100.00
------------+-----------------------------------
      Total |      1,064      100.00

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