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

      Route |
    Signing |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,257       12.57       12.57
          2 |      1,273       12.73       25.30
          3 |      2,541       25.41       50.71
          4 |      1,850       18.50       69.21
          5 |         30        0.30       69.51
          6 |      2,944       29.44       98.95
          8 |        102        1.02       99.97
          9 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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