Frequencies for motdir variable in pbtype dataset :

   Motorist |
  Direction |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        312        5.80        5.80
          2 |        309        5.75       11.55
          3 |        328        6.10       17.65
          4 |        293        5.45       23.10
          7 |        640       11.90       35.01
          8 |      3,362       62.54       97.54
          9 |        132        2.46      100.00
------------+-----------------------------------
      Total |      5,376      100.00

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