Frequencies for first 10,000 rows of impact1 variable in person dataset :

   areas of |
   impact - |
    initial |
    contact |
      point |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        683        6.83        6.83
          1 |        250        2.50        9.33
          2 |         91        0.91       10.24
          3 |        137        1.37       11.61
          4 |         56        0.56       12.17
          5 |         33        0.33       12.50
          6 |        640        6.40       18.90
          7 |         69        0.69       19.59
          8 |         53        0.53       20.12
          9 |        159        1.59       21.71
         10 |         79        0.79       22.50
         11 |        222        2.22       24.72
         12 |      4,506       45.06       69.78
         13 |         16        0.16       69.94
         14 |        173        1.73       71.67
         18 |          3        0.03       71.70
         19 |          7        0.07       71.77
         61 |        326        3.26       75.03
         62 |        191        1.91       76.94
         63 |         74        0.74       77.68
         81 |        281        2.81       80.49
         82 |        202        2.02       82.51
         83 |         72        0.72       83.23
         98 |        554        5.54       88.77
         99 |        170        1.70       90.47
          . |        953        9.53      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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