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

      Light |
  Condition |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      4,673       46.73       46.73
          2 |      2,295       22.95       69.68
          3 |      2,375       23.75       93.43
          4 |        186        1.86       95.29
          5 |        253        2.53       97.82
          6 |        162        1.62       99.44
          7 |          1        0.01       99.45
          8 |          2        0.02       99.47
          9 |         53        0.53      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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