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

atmospheric |
 conditions |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,583       75.83       75.83
          2 |        610        6.10       81.93
          3 |          4        0.04       81.97
          4 |         41        0.41       82.38
          5 |        110        1.10       83.48
          6 |          4        0.04       83.52
          7 |          2        0.02       83.54
          8 |         14        0.14       83.68
         10 |      1,456       14.56       98.24
         12 |          5        0.05       98.29
         98 |         19        0.19       98.48
         99 |        152        1.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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