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

 Trafficway |
       Flow |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,534       65.34       65.34
          2 |      2,015       20.15       85.49
          3 |      1,060       10.60       96.09
          4 |        332        3.32       99.41
          9 |         59        0.59      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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