Frequencies for ptowed variable in parkwork dataset :

    vehicle |
    removal |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |        394       34.77       34.77
          3 |         92        8.12       42.89
          5 |        581       51.28       94.17
          8 |         49        4.32       98.50
          9 |         17        1.50      100.00
------------+-----------------------------------
      Total |      1,133      100.00

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