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

    Roadway |
       Flow |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,541       15.41       15.41
          2 |        161        1.61       17.02
          3 |        943        9.43       26.45
          4 |      7,116       71.16       97.61
          5 |        151        1.51       99.12
          9 |         88        0.88      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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