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

   Accident |
 Date-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        775        7.75        7.75
          2 |        704        7.04       14.79
          3 |        884        8.84       23.63
          4 |        807        8.07       31.70
          5 |        975        9.75       41.45
          6 |        925        9.25       50.70
          7 |        917        9.17       59.87
          8 |        991        9.91       69.78
          9 |        901        9.01       78.79
         10 |        773        7.73       86.52
         11 |        691        6.91       93.43
         12 |        657        6.57      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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