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

atmospheric |
 conditions |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,863       78.63       78.63
          2 |        583        5.83       84.46
          3 |         11        0.11       84.57
          4 |         73        0.73       85.30
          5 |         69        0.69       85.99
          6 |          8        0.08       86.07
          7 |          3        0.03       86.10
          8 |         14        0.14       86.24
         10 |      1,249       12.49       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