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

    area of |
    impact- |
    initial |
    contact |
      point |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        844        8.44        8.44
          1 |        188        1.88       10.32
          2 |         85        0.85       11.17
          3 |        239        2.39       13.56
          4 |         54        0.54       14.10
          5 |         63        0.63       14.73
          6 |        604        6.04       20.77
          7 |         75        0.75       21.52
          8 |         68        0.68       22.20
          9 |        311        3.11       25.31
         10 |        111        1.11       26.42
         11 |        231        2.31       28.73
         12 |      5,275       52.75       81.48
         13 |         24        0.24       81.72
         14 |        351        3.51       85.23
         18 |         20        0.20       85.43
         61 |        286        2.86       88.29
         62 |        135        1.35       89.64
         63 |         75        0.75       90.39
         81 |        240        2.40       92.79
         82 |        138        1.38       94.17
         83 |         52        0.52       94.69
         98 |        360        3.60       98.29
         99 |        171        1.71      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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