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

atmospheric |
 conditions |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,873       78.73       78.73
          2 |        580        5.80       84.53
          3 |         11        0.11       84.64
          4 |         55        0.55       85.19
          5 |         94        0.94       86.13
          6 |         13        0.13       86.26
          7 |          2        0.02       86.28
          8 |         11        0.11       86.39
         10 |      1,252       12.52       98.91
         11 |          5        0.05       98.96
         12 |          2        0.02       98.98
         98 |         29        0.29       99.27
         99 |         73        0.73      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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