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

    Roadway |
    Surface |
  Condition |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      8,874       88.74       88.74
          2 |        908        9.08       97.82
          3 |         45        0.45       98.27
          4 |         88        0.88       99.15
          5 |         46        0.46       99.61
          8 |         16        0.16       99.77
          9 |         23        0.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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