Frequencies for wgtcd_tr variable in vehnit dataset :

      TRUCK |
WEIGHT CODE |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        112        8.04        8.04
          2 |        177       12.71       20.75
          3 |         17        1.22       21.97
          4 |          8        0.57       22.54
          5 |         13        0.93       23.47
          6 |         26        1.87       25.34
          7 |         10        0.72       26.06
          8 |        141       10.12       36.18
          9 |         96        6.89       43.07
          . |        793       56.93      100.00
------------+-----------------------------------
      Total |      1,393      100.00

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