Frequencies for pday variable in parkwork dataset :

 crash date |
      (day) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         33        2.91        2.91
          2 |         38        3.35        6.27
          3 |         47        4.15       10.41
          4 |         33        2.91       13.33
          5 |         23        2.03       15.36
          6 |         48        4.24       19.59
          7 |         38        3.35       22.95
          8 |         27        2.38       25.33
          9 |         44        3.88       29.21
         10 |         38        3.35       32.57
         11 |         33        2.91       35.48
         12 |         46        4.06       39.54
         13 |         33        2.91       42.45
         14 |         26        2.29       44.75
         15 |         45        3.97       48.72
         16 |         43        3.80       52.52
         17 |         52        4.59       57.11
         18 |         48        4.24       61.34
         19 |         27        2.38       63.72
         20 |         30        2.65       66.37
         21 |         28        2.47       68.84
         22 |         44        3.88       72.73
         23 |         26        2.29       75.02
         24 |         34        3.00       78.02
         25 |         44        3.88       81.91
         26 |         44        3.88       85.79
         27 |         41        3.62       89.41
         28 |         36        3.18       92.59
         29 |         29        2.56       95.15
         30 |         37        3.27       98.41
         31 |         18        1.59      100.00
------------+-----------------------------------
      Total |      1,133      100.00

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