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

      Light |
  Condition |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      4,470       44.70       44.70
          2 |      3,157       31.57       76.27
          3 |      1,926       19.26       95.53
          4 |        197        1.97       97.50
          5 |        227        2.27       99.77
          9 |         23        0.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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