Frequencies for first 10,000 rows of aoi1 variable in vevent dataset :

   Areas of |
     Impact |
      (this |
   Vehicle) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,185       11.85       11.85
          1 |        135        1.35       13.20
          2 |         28        0.28       13.48
          3 |         85        0.85       14.33
          4 |         32        0.32       14.65
          5 |         35        0.35       15.00
          6 |         75        0.75       15.75
          7 |         27        0.27       16.02
          8 |         22        0.22       16.24
          9 |         95        0.95       17.19
         10 |         34        0.34       17.53
         11 |        148        1.48       19.01
         12 |      2,953       29.53       48.54
         13 |         39        0.39       48.93
         14 |        253        2.53       51.46
         18 |        132        1.32       52.78
         55 |      3,431       34.31       87.09
         61 |        111        1.11       88.20
         62 |         67        0.67       88.87
         63 |         24        0.24       89.11
         81 |        111        1.11       90.22
         82 |         52        0.52       90.74
         83 |         28        0.28       91.02
         98 |        518        5.18       96.20
         99 |        380        3.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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