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

Atmospheric |
  Condition |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,054       90.54       90.54
          2 |        681        6.81       97.35
          3 |         16        0.16       97.51
          4 |         53        0.53       98.04
          7 |        134        1.34       99.38
          9 |         62        0.62      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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