Frequencies for first 10,000 rows of weather variable in accident dataset :

Atmospheric |
 Conditions |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,805       78.05       78.05
          2 |        657        6.57       84.62
          3 |         24        0.24       84.86
          4 |         97        0.97       85.83
          5 |         86        0.86       86.69
          6 |          8        0.08       86.77
          7 |          2        0.02       86.79
          8 |         16        0.16       86.95
         10 |      1,153       11.53       98.48
         11 |          6        0.06       98.54
         98 |         18        0.18       98.72
         99 |        128        1.28      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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