Frequencies for first 10,000 rows of weather1 variable in accident dataset :

atmospheric |
 conditions |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,866       78.66       78.66
          2 |        556        5.56       84.22
          3 |         11        0.11       84.33
          4 |         68        0.68       85.01
          5 |         67        0.67       85.68
          6 |          7        0.07       85.75
          7 |          3        0.03       85.78
          8 |         13        0.13       85.91
         10 |      1,282       12.82       98.73
         11 |          3        0.03       98.76
         12 |          3        0.03       98.79
         98 |         26        0.26       99.05
         99 |         95        0.95      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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