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

   Accident |
 Date-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        744        7.44        7.44
          2 |        736        7.36       14.80
          3 |        842        8.42       23.22
          4 |        831        8.31       31.53
          5 |        904        9.04       40.57
          6 |        918        9.18       49.75
          7 |        874        8.74       58.49
          8 |        932        9.32       67.81
          9 |        855        8.55       76.36
         10 |        873        8.73       85.09
         11 |        799        7.99       93.08
         12 |        692        6.92      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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