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

      Light |
  Condition |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      4,475       44.75       44.75
          2 |      3,081       30.81       75.56
          3 |      1,978       19.78       95.34
          4 |        187        1.87       97.21
          5 |        263        2.63       99.84
          9 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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