Frequencies for first 10,000 rows of month variable in accident dataset :

      month |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        796        7.96        7.96
          2 |        728        7.28       15.24
          3 |        898        8.98       24.22
          4 |        802        8.02       32.24
          5 |        849        8.49       40.73
          6 |        833        8.33       49.06
          7 |        890        8.90       57.96
          8 |        884        8.84       66.80
          9 |        842        8.42       75.22
         10 |        915        9.15       84.37
         11 |        845        8.45       92.82
         12 |        718        7.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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