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

       RDWY |
   FUNCTION |
      CLASS |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        894        8.94        8.94
          2 |      1,142       11.42       20.36
          3 |        927        9.27       29.63
          4 |      1,136       11.36       40.99
          5 |        213        2.13       43.12
          6 |        656        6.56       49.68
          9 |         28        0.28       49.96
         11 |        797        7.97       57.93
         12 |        639        6.39       64.32
         13 |      1,364       13.64       77.96
         14 |      1,144       11.44       89.40
         15 |        555        5.55       94.95
         16 |        483        4.83       99.78
         19 |         13        0.13       99.91
         99 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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