Frequencies for pfire variable in parkwork dataset :

       fire |
 occurrence |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,132       98.78       98.78
          1 |         14        1.22      100.00
------------+-----------------------------------
      Total |      1,146      100.00

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