Frequencies for pimpact1 variable in parkwork dataset :

    Area of |
    Impact- |
    Initial |
    Damaged |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         22        2.20        2.20
          2 |         10        1.00        3.19
          3 |         25        2.50        5.69
          4 |         17        1.70        7.39
          5 |         42        4.19       11.58
          6 |        364       36.33       47.90
          7 |         60        5.99       53.89
          8 |         13        1.30       55.19
          9 |         68        6.79       61.98
         10 |         28        2.79       64.77
         11 |         50        4.99       69.76
         12 |        135       13.47       83.23
         13 |         16        1.60       84.83
         18 |          2        0.20       85.03
         61 |         32        3.19       88.22
         62 |         18        1.80       90.02
         63 |         23        2.30       92.32
         81 |         15        1.50       93.81
         82 |          6        0.60       94.41
         83 |         11        1.10       95.51
         98 |         25        2.50       98.00
         99 |         20        2.00      100.00
------------+-----------------------------------
      Total |      1,002      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016