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

Atmospheric |
  Condition |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      8,926       89.26       89.26
          2 |        658        6.58       95.84
          3 |          6        0.06       95.90
          4 |         35        0.35       96.25
          5 |        138        1.38       97.63
          8 |         33        0.33       97.96
          9 |        204        2.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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