Frequencies for pveh_sc1 variable in parkwork dataset :

    vehicle |
    related |
factors (1) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,082       99.36       99.36
         32 |          2        0.18       99.54
         41 |          1        0.09       99.63
         42 |          3        0.28       99.91
         99 |          1        0.09      100.00
------------+-----------------------------------
      Total |      1,089      100.00

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