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

    roadway |
  alignment |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         63        0.63        0.63
          1 |      7,809       78.09       78.72
          2 |        845        8.45       87.17
          3 |      1,036       10.36       97.53
          4 |         54        0.54       98.07
          8 |        149        1.49       99.56
          9 |         44        0.44      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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