Frequencies for month variable in person dataset :

   Accident |
 Date-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         86        6.51        6.51
          2 |        196       14.83       21.33
          3 |         85        6.43       27.76
          4 |         99        7.49       35.25
          5 |         82        6.20       41.45
          6 |         92        6.96       48.41
          7 |         86        6.51       54.92
          8 |        111        8.40       63.31
          9 |        110        8.32       71.63
         10 |        151       11.42       83.06
         11 |         72        5.45       88.50
         12 |        152       11.50      100.00
------------+-----------------------------------
      Total |      1,322      100.00

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