Frequencies for first 10,000 rows of first_mo variable in vehicle dataset :

      First |
Accident,et |
    c-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,233       42.33       42.33
          1 |        410        4.10       46.43
          2 |        398        3.98       50.41
          3 |        414        4.14       54.55
          4 |        430        4.30       58.85
          5 |        452        4.52       63.37
          6 |        425        4.25       67.62
          7 |        426        4.26       71.88
          8 |        470        4.70       76.58
          9 |        415        4.15       80.73
         10 |        440        4.40       85.13
         11 |        390        3.90       89.03
         12 |        422        4.22       93.25
         99 |        675        6.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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