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

Atmospheric |
 Conditions |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,892       98.92       98.92
          1 |          7        0.07       98.99
          2 |         46        0.46       99.45
          3 |          2        0.02       99.47
          4 |          4        0.04       99.51
          5 |          6        0.06       99.57
          6 |          1        0.01       99.58
          7 |          1        0.01       99.59
         10 |         40        0.40       99.99
         11 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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