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

      Light |
  Condition |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      4,103       41.03       41.03
          2 |      3,276       32.76       73.79
          3 |      2,229       22.29       96.08
          6 |        378        3.78       99.86
          9 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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