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

 crash date |
    (month) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        766        7.66        7.66
          2 |        716        7.16       14.82
          3 |        816        8.16       22.98
          4 |        819        8.19       31.17
          5 |        842        8.42       39.59
          6 |        831        8.31       47.90
          7 |        866        8.66       56.56
          8 |        896        8.96       65.52
          9 |        848        8.48       74.00
         10 |        937        9.37       83.37
         11 |        851        8.51       91.88
         12 |        812        8.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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