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

atmospheric |
 conditions |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,857       98.57       98.57
          1 |          7        0.07       98.64
          2 |         20        0.20       98.84
          3 |          3        0.03       98.87
          4 |          3        0.03       98.90
          5 |          3        0.03       98.93
          6 |          4        0.04       98.97
          8 |          1        0.01       98.98
         10 |         99        0.99       99.97
         11 |          2        0.02       99.99
         98 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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