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

      Light |
  Condition |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      4,340       43.40       43.40
          2 |      3,131       31.31       74.71
          3 |      2,092       20.92       95.63
          4 |        163        1.63       97.26
          5 |        257        2.57       99.83
          9 |         17        0.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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