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

    roadway |
  alignment |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         72        0.72        0.72
          1 |      7,433       74.33       75.05
          2 |        838        8.38       83.43
          3 |      1,029       10.29       93.72
          4 |         40        0.40       94.12
          8 |        496        4.96       99.08
          9 |         92        0.92      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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