Frequencies for pday variable in parkwork dataset :

 crash date |
      (day) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         50        4.36        4.36
          2 |         29        2.53        6.89
          3 |         35        3.05        9.95
          4 |         43        3.75       13.70
          5 |         42        3.66       17.36
          6 |         28        2.44       19.81
          7 |         36        3.14       22.95
          8 |         45        3.93       26.88
          9 |         47        4.10       30.98
         10 |         33        2.88       33.86
         11 |         46        4.01       37.87
         12 |         30        2.62       40.49
         13 |         28        2.44       42.93
         14 |         45        3.93       46.86
         15 |         42        3.66       50.52
         16 |         40        3.49       54.01
         17 |         37        3.23       57.24
         18 |         45        3.93       61.17
         19 |         37        3.23       64.40
         20 |         36        3.14       67.54
         21 |         20        1.75       69.28
         22 |         33        2.88       72.16
         23 |         45        3.93       76.09
         24 |         49        4.28       80.37
         25 |         28        2.44       82.81
         26 |         27        2.36       85.17
         27 |         37        3.23       88.39
         28 |         49        4.28       92.67
         29 |         29        2.53       95.20
         30 |         37        3.23       98.43
         31 |         18        1.57      100.00
------------+-----------------------------------
      Total |      1,146      100.00

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