Frequencies for first 10,000 rows of sur_cond variable in accident dataset :

    Roadway |
    Surface |
  Condition |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      8,859       88.59       88.59
          2 |        922        9.22       97.81
          3 |         54        0.54       98.35
          4 |         83        0.83       99.18
          5 |         32        0.32       99.50
          8 |         21        0.21       99.71
          9 |         29        0.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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