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

      First |
Accident,et |
    c-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,273       42.73       42.73
          1 |        370        3.70       46.43
          2 |        373        3.73       50.16
          3 |        435        4.35       54.51
          4 |        454        4.54       59.05
          5 |        449        4.49       63.54
          6 |        429        4.29       67.83
          7 |        472        4.72       72.55
          8 |        418        4.18       76.73
          9 |        412        4.12       80.85
         10 |        449        4.49       85.34
         11 |        409        4.09       89.43
         12 |        397        3.97       93.40
         99 |        660        6.60      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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