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

       RDWY |
   FUNCTION |
      CLASS |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,045       10.45       10.45
          2 |      1,195       11.95       22.40
          3 |      1,037       10.37       32.77
          4 |      1,135       11.35       44.12
          5 |        237        2.37       46.49
          6 |        513        5.13       51.62
          9 |         57        0.57       52.19
         11 |        766        7.66       59.85
         12 |        698        6.98       66.83
         13 |      1,439       14.39       81.22
         14 |      1,050       10.50       91.72
         15 |        391        3.91       95.63
         16 |        406        4.06       99.69
         19 |         29        0.29       99.98
         99 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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