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

   areas of |
     impact |
      (this |
   vehicle) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,101       11.01       11.01
          1 |        111        1.11       12.12
          2 |         37        0.37       12.49
          3 |         94        0.94       13.43
          4 |         33        0.33       13.76
          5 |         31        0.31       14.07
          6 |         68        0.68       14.75
          7 |         21        0.21       14.96
          8 |         22        0.22       15.18
          9 |        100        1.00       16.18
         10 |         48        0.48       16.66
         11 |        164        1.64       18.30
         12 |      3,225       32.25       50.55
         13 |         61        0.61       51.16
         14 |        111        1.11       52.27
         18 |         96        0.96       53.23
         19 |        225        2.25       55.48
         55 |      3,227       32.27       87.75
         61 |         86        0.86       88.61
         62 |         56        0.56       89.17
         63 |         16        0.16       89.33
         81 |         99        0.99       90.32
         82 |         74        0.74       91.06
         83 |         18        0.18       91.24
         98 |        604        6.04       97.28
         99 |        272        2.72      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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