Frequencies for first 10,000 rows of d_vision1 variable in vehicle dataset :

 DRI VISION |
OBSCURED BY |
          1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,389       93.89       93.89
          1 |         98        0.98       94.87
          2 |         34        0.34       95.21
          3 |         36        0.36       95.57
          4 |          2        0.02       95.59
          5 |          8        0.08       95.67
          6 |         45        0.45       96.12
          7 |          9        0.09       96.21
         10 |          6        0.06       96.27
         11 |          5        0.05       96.32
         12 |          1        0.01       96.33
         13 |          1        0.01       96.34
         14 |          8        0.08       96.42
         97 |          2        0.02       96.44
         98 |         16        0.16       96.60
         99 |        340        3.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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