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

    area of |
    impact- |
    initial |
    contact |
      point |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        996        9.96        9.96
          1 |        154        1.54       11.50
          2 |         64        0.64       12.14
          3 |        182        1.82       13.96
          4 |         46        0.46       14.42
          5 |         53        0.53       14.95
          6 |        587        5.87       20.82
          7 |         73        0.73       21.55
          8 |         50        0.50       22.05
          9 |        230        2.30       24.35
         10 |         80        0.80       25.15
         11 |        227        2.27       27.42
         12 |      4,488       44.88       72.30
         13 |         17        0.17       72.47
         14 |        358        3.58       76.05
         18 |         20        0.20       76.25
         61 |        297        2.97       79.22
         62 |        154        1.54       80.76
         63 |         87        0.87       81.63
         81 |        233        2.33       83.96
         82 |        144        1.44       85.40
         83 |         67        0.67       86.07
         98 |        346        3.46       89.53
         99 |        172        1.72       91.25
          . |        875        8.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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