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

 crash date |
      (day) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        343        3.43        3.43
          2 |        297        2.97        6.40
          3 |        397        3.97       10.37
          4 |        313        3.13       13.50
          5 |        315        3.15       16.65
          6 |        334        3.34       19.99
          7 |        320        3.20       23.19
          8 |        365        3.65       26.84
          9 |        303        3.03       29.87
         10 |        342        3.42       33.29
         11 |        341        3.41       36.70
         12 |        318        3.18       39.88
         13 |        328        3.28       43.16
         14 |        313        3.13       46.29
         15 |        323        3.23       49.52
         16 |        343        3.43       52.95
         17 |        386        3.86       56.81
         18 |        332        3.32       60.13
         19 |        300        3.00       63.13
         20 |        317        3.17       66.30
         21 |        316        3.16       69.46
         22 |        292        2.92       72.38
         23 |        343        3.43       75.81
         24 |        289        2.89       78.70
         25 |        320        3.20       81.90
         26 |        311        3.11       85.01
         27 |        367        3.67       88.68
         28 |        331        3.31       91.99
         29 |        281        2.81       94.80
         30 |        320        3.20       98.00
         31 |        200        2.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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