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

      Light |
  Condition |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      4,050       40.50       40.50
          2 |      3,478       34.78       75.28
          3 |      2,032       20.32       95.60
          4 |        186        1.86       97.46
          5 |        236        2.36       99.82
          9 |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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