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

    roadway |
   function |
      class |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        738        7.38        7.38
          2 |      1,504       15.04       22.42
          3 |        715        7.15       29.57
          4 |        995        9.95       39.52
          5 |        178        1.78       41.30
          6 |        503        5.03       46.33
          9 |         17        0.17       46.50
         11 |        933        9.33       55.83
         12 |        704        7.04       62.87
         13 |      1,766       17.66       80.53
         14 |      1,157       11.57       92.10
         15 |        389        3.89       95.99
         16 |        387        3.87       99.86
         19 |          5        0.05       99.91
         99 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016