Frequencies for first 10,000 rows of valign variable in vehicle dataset :

    roadway |
  alignment |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         52        0.52        0.52
          1 |      7,888       78.88       79.40
          2 |        881        8.81       88.21
          3 |      1,036       10.36       98.57
          4 |         51        0.51       99.08
          8 |         41        0.41       99.49
          9 |         51        0.51      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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