Frequencies for first 10,000 rows of vsurcond variable in vehicle dataset :

    roadway |
    surface |
  condition |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         65        0.65        0.65
          1 |      9,012       90.12       90.77
          2 |        725        7.25       98.02
          3 |         28        0.28       98.30
          4 |         52        0.52       98.82
          5 |          1        0.01       98.83
          6 |          5        0.05       98.88
          8 |          1        0.01       98.89
         10 |          9        0.09       98.98
         11 |         11        0.11       99.09
         98 |         19        0.19       99.28
         99 |         72        0.72      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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