Frequencies for first 10,000 rows of weather2 variable in accident dataset :

atmospheric |
 conditions |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,879       98.79       98.79
          1 |          4        0.04       98.83
          2 |         28        0.28       99.11
          3 |          2        0.02       99.13
          4 |          5        0.05       99.18
          5 |          5        0.05       99.23
          6 |          2        0.02       99.25
          7 |          1        0.01       99.26
          8 |          1        0.01       99.27
         10 |         69        0.69       99.96
         11 |          2        0.02       99.98
         12 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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