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

 crash date |
    (month) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        812        8.12        8.12
          2 |        730        7.30       15.42
          3 |        861        8.61       24.03
          4 |        876        8.76       32.79
          5 |        817        8.17       40.96
          6 |        854        8.54       49.50
          7 |        874        8.74       58.24
          8 |        885        8.85       67.09
          9 |        833        8.33       75.42
         10 |        849        8.49       83.91
         11 |        806        8.06       91.97
         12 |        803        8.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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