Frequencies for phit_run variable in parkwork dataset :

hit and run |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,142       99.65       99.65
          1 |          4        0.35      100.00
------------+-----------------------------------
      Total |      1,146      100.00

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