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

      Light |
  Condition |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      4,405       44.05       44.05
          2 |      3,194       31.94       75.99
          3 |      1,971       19.71       95.70
          4 |        165        1.65       97.35
          5 |        244        2.44       99.79
          9 |         21        0.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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