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

Atmospheric |
 Conditions |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,083       90.83       90.83
          2 |        681        6.81       97.64
          3 |          7        0.07       97.71
          4 |         39        0.39       98.10
          5 |        152        1.52       99.62
          6 |          9        0.09       99.71
          8 |         10        0.10       99.81
          9 |         19        0.19      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016