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

 crash date |
    (month) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        778        7.78        7.78
          2 |        701        7.01       14.79
          3 |        833        8.33       23.12
          4 |        821        8.21       31.33
          5 |        834        8.34       39.67
          6 |        839        8.39       48.06
          7 |        847        8.47       56.53
          8 |        849        8.49       65.02
          9 |        844        8.44       73.46
         10 |        928        9.28       82.74
         11 |        846        8.46       91.20
         12 |        880        8.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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