Frequencies for ptowed variable in parkwork dataset :

    vehicle |
    removal |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |        302       27.73       27.73
          3 |        118       10.84       38.57
          5 |        588       53.99       92.56
          8 |         63        5.79       98.35
          9 |         18        1.65      100.00
------------+-----------------------------------
      Total |      1,089      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016