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

 crash date |
      (day) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        374        3.74        3.74
          2 |        340        3.40        7.14
          3 |        353        3.53       10.67
          4 |        337        3.37       14.04
          5 |        336        3.36       17.40
          6 |        341        3.41       20.81
          7 |        304        3.04       23.85
          8 |        377        3.77       27.62
          9 |        342        3.42       31.04
         10 |        334        3.34       34.38
         11 |        309        3.09       37.47
         12 |        365        3.65       41.12
         13 |        337        3.37       44.49
         14 |        344        3.44       47.93
         15 |        286        2.86       50.79
         16 |        284        2.84       53.63
         17 |        315        3.15       56.78
         18 |        339        3.39       60.17
         19 |        311        3.11       63.28
         20 |        311        3.11       66.39
         21 |        303        3.03       69.42
         22 |        376        3.76       73.18
         23 |        333        3.33       76.51
         24 |        295        2.95       79.46
         25 |        316        3.16       82.62
         26 |        327        3.27       85.89
         27 |        298        2.98       88.87
         28 |        371        3.71       92.58
         29 |        246        2.46       95.04
         30 |        297        2.97       98.01
         31 |        199        1.99      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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