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

       RDWY |
   FUNCTION |
      CLASS |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        808        8.08        8.08
          2 |      1,354       13.54       21.62
          3 |      1,096       10.96       32.58
          4 |      1,325       13.25       45.83
          5 |        245        2.45       48.28
          6 |        755        7.55       55.83
          9 |         23        0.23       56.06
         11 |        487        4.87       60.93
         12 |        341        3.41       64.34
         13 |      1,897       18.97       83.31
         14 |        960        9.60       92.91
         15 |        314        3.14       96.05
         16 |        384        3.84       99.89
         99 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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