Frequencies for pimpact1 variable in parkwork dataset :

    area of |
    impact- |
    initial |
    contact |
      point |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         18        1.65        1.65
          2 |         10        0.92        2.57
          3 |         32        2.93        5.50
          4 |         12        1.10        6.60
          5 |         32        2.93        9.53
          6 |        414       37.95       47.48
          7 |         88        8.07       55.55
          8 |         17        1.56       57.10
          9 |         68        6.23       63.34
         10 |         25        2.29       65.63
         11 |         56        5.13       70.76
         12 |        141       12.92       83.68
         13 |         31        2.84       86.53
         14 |          5        0.46       86.98
         18 |          3        0.27       87.26
         61 |         32        2.93       90.19
         62 |         18        1.65       91.84
         63 |         18        1.65       93.49
         81 |         14        1.28       94.78
         82 |          3        0.27       95.05
         83 |          6        0.55       95.60
         98 |         31        2.84       98.44
         99 |         17        1.56      100.00
------------+-----------------------------------
      Total |      1,091      100.00

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