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

   Accident |
 Date-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        778        7.78        7.78
          2 |        720        7.20       14.98
          3 |        792        7.92       22.90
          4 |        737        7.37       30.27
          5 |        908        9.08       39.35
          6 |        896        8.96       48.31
          7 |        890        8.90       57.21
          8 |        935        9.35       66.56
          9 |        832        8.32       74.88
         10 |        848        8.48       83.36
         11 |        844        8.44       91.80
         12 |        819        8.19       99.99
         99 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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