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

    Roadway |
    Surface |
  Condition |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      8,557       85.57       85.57
          2 |      1,178       11.78       97.35
          3 |         97        0.97       98.32
          4 |         59        0.59       98.91
          5 |         41        0.41       99.32
          8 |         25        0.25       99.57
          9 |         43        0.43      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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