Frequencies for first 10,000 rows of day variable in vehicle dataset :

 crash date |
      (day) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        342        3.42        3.42
          2 |        303        3.03        6.45
          3 |        399        3.99       10.44
          4 |        297        2.97       13.41
          5 |        312        3.12       16.53
          6 |        336        3.36       19.89
          7 |        317        3.17       23.06
          8 |        359        3.59       26.65
          9 |        300        3.00       29.65
         10 |        339        3.39       33.04
         11 |        337        3.37       36.41
         12 |        316        3.16       39.57
         13 |        323        3.23       42.80
         14 |        319        3.19       45.99
         15 |        318        3.18       49.17
         16 |        340        3.40       52.57
         17 |        387        3.87       56.44
         18 |        325        3.25       59.69
         19 |        305        3.05       62.74
         20 |        315        3.15       65.89
         21 |        331        3.31       69.20
         22 |        288        2.88       72.08
         23 |        345        3.45       75.53
         24 |        294        2.94       78.47
         25 |        323        3.23       81.70
         26 |        322        3.22       84.92
         27 |        369        3.69       88.61
         28 |        337        3.37       91.98
         29 |        279        2.79       94.77
         30 |        321        3.21       97.98
         31 |        202        2.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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