Frequencies for first 10,000 rows of aoi2 variable in cevent dataset :

    Area of |
     Impact |
     (other |
   Vehicle) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         32        0.32        0.32
          2 |         19        0.19        0.51
          3 |         57        0.57        1.08
          4 |         24        0.24        1.32
          5 |         22        0.22        1.54
          6 |        291        2.91        4.45
          7 |         28        0.28        4.73
          8 |         33        0.33        5.06
          9 |         95        0.95        6.01
         10 |         43        0.43        6.44
         11 |         57        0.57        7.01
         12 |        464        4.64       11.65
         13 |         11        0.11       11.76
         14 |         21        0.21       11.97
         18 |          6        0.06       12.03
         55 |      3,920       39.20       51.23
         61 |        108        1.08       52.31
         62 |         40        0.40       52.71
         63 |         23        0.23       52.94
         77 |      4,523       45.23       98.17
         81 |         62        0.62       98.79
         82 |         33        0.33       99.12
         83 |         21        0.21       99.33
         98 |         38        0.38       99.71
         99 |         29        0.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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