Frequencies for pfire variable in parkwork dataset :

       fire |
 occurrence |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,123       99.12       99.12
          1 |         10        0.88      100.00
------------+-----------------------------------
      Total |      1,133      100.00

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