Frequencies for pmonth variable in parkwork dataset :

 Crash Date |
    (Month) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         82        7.71        7.71
          2 |         64        6.02       13.72
          3 |         91        8.55       22.27
          4 |         99        9.30       31.58
          5 |        114       10.71       42.29
          6 |         97        9.12       51.41
          7 |         98        9.21       60.62
          8 |         93        8.74       69.36
          9 |         81        7.61       76.97
         10 |         85        7.99       84.96
         11 |         83        7.80       92.76
         12 |         77        7.24      100.00
------------+-----------------------------------
      Total |      1,064      100.00

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