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

      First |
Accident,et |
    c-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,105       41.05       41.05
          1 |        456        4.56       45.61
          2 |        438        4.38       49.99
          3 |        439        4.39       54.38
          4 |        435        4.35       58.73
          5 |        464        4.64       63.37
          6 |        402        4.02       67.39
          7 |        435        4.35       71.74
          8 |        458        4.58       76.32
          9 |        391        3.91       80.23
         10 |        425        4.25       84.48
         11 |        399        3.99       88.47
         12 |        412        4.12       92.59
         99 |        741        7.41      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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