Frequencies for lgt_cond variable in accident dataset :

      Light |
  Condition |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        186       32.57       32.57
          2 |        258       45.18       77.76
          3 |         51        8.93       86.69
          4 |         41        7.18       93.87
          5 |         34        5.95       99.82
          9 |          1        0.18      100.00
------------+-----------------------------------
      Total |        571      100.00

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