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

    Time of |
Accident-Ho |
         ur |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        522        5.22        5.22
          1 |        586        5.86       11.08
          2 |        492        4.92       16.00
          3 |        304        3.04       19.04
          4 |        206        2.06       21.10
          5 |        187        1.87       22.97
          6 |        231        2.31       25.28
          7 |        229        2.29       27.57
          8 |        219        2.19       29.76
          9 |        208        2.08       31.84
         10 |        249        2.49       34.33
         11 |        271        2.71       37.04
         12 |        289        2.89       39.93
         13 |        322        3.22       43.15
         14 |        426        4.26       47.41
         15 |        483        4.83       52.24
         16 |        541        5.41       57.65
         17 |        587        5.87       63.52
         18 |        640        6.40       69.92
         19 |        683        6.83       76.75
         20 |        589        5.89       82.64
         21 |        553        5.53       88.17
         22 |        591        5.91       94.08
         23 |        574        5.74       99.82
         24 |          5        0.05       99.87
         99 |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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