Frequencies for first 10,000 rows of road_fnc variable in person dataset :

       RDWY |
   FUNCTION |
      CLASS |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,181       11.81       11.81
          2 |      1,229       12.29       24.10
          3 |        690        6.90       31.00
          4 |      1,331       13.31       44.31
          5 |        216        2.16       46.47
          6 |        714        7.14       53.61
          9 |         20        0.20       53.81
         11 |        768        7.68       61.49
         12 |        384        3.84       65.33
         13 |      1,632       16.32       81.65
         14 |      1,043       10.43       92.08
         15 |        331        3.31       95.39
         16 |        423        4.23       99.62
         19 |         22        0.22       99.84
         99 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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