Frequencies for first 10,000 rows of hour variable in person dataset :

    Time of |
Accident-Ho |
         ur |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        431        4.31        4.31
          1 |        430        4.30        8.61
          2 |        325        3.25       11.86
          3 |        191        1.91       13.77
          4 |        218        2.18       15.95
          5 |        270        2.70       18.65
          6 |        271        2.71       21.36
          7 |        296        2.96       24.32
          8 |        256        2.56       26.88
          9 |        282        2.82       29.70
         10 |        316        3.16       32.86
         11 |        315        3.15       36.01
         12 |        378        3.78       39.79
         13 |        408        4.08       43.87
         14 |        537        5.37       49.24
         15 |        587        5.87       55.11
         16 |        510        5.10       60.21
         17 |        637        6.37       66.58
         18 |        684        6.84       73.42
         19 |        585        5.85       79.27
         20 |        505        5.05       84.32
         21 |        482        4.82       89.14
         22 |        556        5.56       94.70
         23 |        505        5.05       99.75
         24 |          4        0.04       99.79
         99 |         21        0.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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