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

   areas of |
     impact |
     (other |
   vehicle) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         48        0.48        0.48
          2 |         40        0.40        0.88
          3 |         92        0.92        1.80
          4 |         34        0.34        2.14
          5 |         20        0.20        2.34
          6 |        562        5.62        7.96
          7 |         60        0.60        8.56
          8 |         54        0.54        9.10
          9 |        176        1.76       10.86
         10 |         60        0.60       11.46
         11 |         78        0.78       12.24
         12 |        801        8.01       20.25
         13 |         18        0.18       20.43
         14 |         28        0.28       20.71
         18 |          6        0.06       20.77
         19 |          4        0.04       20.81
         55 |      3,191       31.91       52.72
         61 |        176        1.76       54.48
         62 |         70        0.70       55.18
         63 |         54        0.54       55.72
         77 |      4,054       40.54       96.26
         81 |        114        1.14       97.40
         82 |         62        0.62       98.02
         83 |         72        0.72       98.74
         98 |         68        0.68       99.42
         99 |         58        0.58      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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