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

atmospheric |
 conditions |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,589       75.89       75.89
          2 |        589        5.89       81.78
          3 |          2        0.02       81.80
          4 |         41        0.41       82.21
          5 |        108        1.08       83.29
          6 |          4        0.04       83.33
          7 |          2        0.02       83.35
          8 |         14        0.14       83.49
         10 |      1,474       14.74       98.23
         12 |          6        0.06       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