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

Atmospheric |
 Conditions |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,226       92.26       92.26
          2 |        577        5.77       98.03
          3 |          4        0.04       98.07
          4 |         56        0.56       98.63
          5 |         86        0.86       99.49
          6 |          5        0.05       99.54
          7 |          1        0.01       99.55
          8 |          7        0.07       99.62
          9 |         38        0.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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