Frequencies for pcargtyp variable in parkwork dataset :

 Cargo Body |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        901       84.68       84.68
          1 |         74        6.95       91.64
          2 |          4        0.38       92.01
          3 |         20        1.88       93.89
          4 |         11        1.03       94.92
          6 |          2        0.19       95.11
          7 |          2        0.19       95.30
          8 |          1        0.09       95.39
         11 |          1        0.09       95.49
         12 |          1        0.09       95.58
         22 |          2        0.19       95.77
         28 |          4        0.38       96.15
         96 |         21        1.97       98.12
         97 |         11        1.03       99.15
         98 |          6        0.56       99.72
         99 |          3        0.28      100.00
------------+-----------------------------------
      Total |      1,064      100.00

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