Frequencies for first 10,000 rows of weather1 variable in accident dataset :

atmospheric |
 conditions |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,857       78.57       78.57
          2 |        555        5.55       84.12
          3 |         11        0.11       84.23
          4 |         70        0.70       84.93
          5 |         68        0.68       85.61
          6 |          7        0.07       85.68
          7 |          3        0.03       85.71
          8 |         13        0.13       85.84
         10 |      1,281       12.81       98.65
         11 |          3        0.03       98.68
         12 |          3        0.03       98.71
         98 |         25        0.25       98.96
         99 |        104        1.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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