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

      Light |
  Condition |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,917       39.17       39.17
          2 |      3,278       32.78       71.95
          3 |      2,253       22.53       94.48
          4 |        121        1.21       95.69
          5 |        247        2.47       98.16
          9 |        184        1.84      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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