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

 Crash Date |
      (DAY) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        336        3.36        3.36
          2 |        374        3.74        7.10
          3 |        349        3.49       10.59
          4 |        332        3.32       13.91
          5 |        361        3.61       17.52
          6 |        348        3.48       21.00
          7 |        327        3.27       24.27
          8 |        304        3.04       27.31
          9 |        317        3.17       30.48
         10 |        330        3.30       33.78
         11 |        334        3.34       37.12
         12 |        296        2.96       40.08
         13 |        312        3.12       43.20
         14 |        309        3.09       46.29
         15 |        347        3.47       49.76
         16 |        292        2.92       52.68
         17 |        307        3.07       55.75
         18 |        380        3.80       59.55
         19 |        320        3.20       62.75
         20 |        311        3.11       65.86
         21 |        292        2.92       68.78
         22 |        309        3.09       71.87
         23 |        340        3.40       75.27
         24 |        337        3.37       78.64
         25 |        338        3.38       82.02
         26 |        305        3.05       85.07
         27 |        316        3.16       88.23
         28 |        332        3.32       91.55
         29 |        299        2.99       94.54
         30 |        319        3.19       97.73
         31 |        227        2.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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