Frequencies for wgtcd_tr variable in vehnit dataset :

      TRUCK |
WEIGHT CODE |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        108        9.68        9.68
          2 |        158       14.16       23.84
          3 |         23        2.06       25.90
          4 |         10        0.90       26.79
          5 |          9        0.81       27.60
          6 |         26        2.33       29.93
          7 |         17        1.52       31.45
          8 |         90        8.06       39.52
          9 |         52        4.66       44.18
          . |        623       55.82      100.00
------------+-----------------------------------
      Total |      1,116      100.00

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