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

Atmospheric |
 Conditions |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,003       90.03       90.03
          2 |        687        6.87       96.90
          3 |          6        0.06       96.96
          4 |         56        0.56       97.52
          5 |        187        1.87       99.39
          6 |         15        0.15       99.54
          7 |          1        0.01       99.55
          8 |         23        0.23       99.78
          9 |         22        0.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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