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

atmospheric |
 conditions |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,887       78.87       78.87
          2 |        530        5.30       84.17
          3 |          5        0.05       84.22
          4 |         46        0.46       84.68
          5 |         92        0.92       85.60
          6 |         15        0.15       85.75
          7 |          1        0.01       85.76
          8 |          9        0.09       85.85
         10 |      1,316       13.16       99.01
         11 |          3        0.03       99.04
         98 |         17        0.17       99.21
         99 |         79        0.79      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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