Frequencies for ptrkwtvar variable in parkwork dataset :

   Shipping |
     Weight |
   Variance |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        602       60.08       60.08
         00 |        284       28.34       88.42
         01 |         49        4.89       93.31
         02 |         33        3.29       96.61
         03 |         15        1.50       98.10
         04 |          6        0.60       98.70
         05 |          4        0.40       99.10
         07 |          6        0.60       99.70
         09 |          1        0.10       99.80
         14 |          2        0.20      100.00
------------+-----------------------------------
      Total |      1,002      100.00

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