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

      First |
Accident,et |
    c-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,182       41.82       41.82
          1 |        430        4.30       46.12
          2 |        397        3.97       50.09
          3 |        411        4.11       54.20
          4 |        424        4.24       58.44
          5 |        429        4.29       62.73
          6 |        405        4.05       66.78
          7 |        386        3.86       70.64
          8 |        435        4.35       74.99
          9 |        441        4.41       79.40
         10 |        416        4.16       83.56
         11 |        421        4.21       87.77
         12 |        422        4.22       91.99
         99 |        801        8.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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