Frequencies for lgt_cond variable in accident dataset :

      Light |
  Condition |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        162       33.13       33.13
          2 |        124       25.36       58.49
          3 |        152       31.08       89.57
          6 |         51       10.43      100.00
------------+-----------------------------------
      Total |        489      100.00

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