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

      First |
Accident,et |
    c-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,677       46.77       46.77
          1 |        387        3.87       50.64
          2 |        377        3.77       54.41
          3 |        422        4.22       58.63
          4 |        378        3.78       62.41
          5 |        413        4.13       66.54
          6 |        410        4.10       70.64
          7 |        378        3.78       74.42
          8 |        389        3.89       78.31
          9 |        414        4.14       82.45
         10 |        401        4.01       86.46
         11 |        384        3.84       90.30
         12 |        373        3.73       94.03
         99 |        597        5.97      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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