Frequencies for phit_run variable in parkwork dataset :

hit and run |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,087       99.82       99.82
          1 |          2        0.18      100.00
------------+-----------------------------------
      Total |      1,089      100.00

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