Frequencies for ptowed variable in parkwork dataset :

    vehicle |
    removal |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |        308       27.11       27.11
          3 |        154       13.56       40.67
          5 |        603       53.08       93.75
          8 |         53        4.67       98.42
          9 |         18        1.58      100.00
------------+-----------------------------------
      Total |      1,136      100.00

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