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

       RDWY |
   FUNCTION |
      CLASS |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        868        8.68        8.68
          2 |      1,349       13.49       22.17
          3 |      1,018       10.18       32.35
          4 |      1,289       12.89       45.24
          5 |        277        2.77       48.01
          6 |        611        6.11       54.12
          9 |         36        0.36       54.48
         11 |        584        5.84       60.32
         12 |        408        4.08       64.40
         13 |      1,838       18.38       82.78
         14 |      1,038       10.38       93.16
         15 |        295        2.95       96.11
         16 |        376        3.76       99.87
         19 |          6        0.06       99.93
         99 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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