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

    Time of |
Accident-Ho |
         ur |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        500        5.00        5.00
          1 |        503        5.03       10.03
          2 |        414        4.14       14.17
          3 |        303        3.03       17.20
          4 |        214        2.14       19.34
          5 |        233        2.33       21.67
          6 |        322        3.22       24.89
          7 |        277        2.77       27.66
          8 |        247        2.47       30.13
          9 |        260        2.60       32.73
         10 |        251        2.51       35.24
         11 |        293        2.93       38.17
         12 |        353        3.53       41.70
         13 |        394        3.94       45.64
         14 |        459        4.59       50.23
         15 |        477        4.77       55.00
         16 |        536        5.36       60.36
         17 |        561        5.61       65.97
         18 |        613        6.13       72.10
         19 |        565        5.65       77.75
         20 |        542        5.42       83.17
         21 |        560        5.60       88.77
         22 |        512        5.12       93.89
         23 |        528        5.28       99.17
         24 |          6        0.06       99.23
         99 |         77        0.77      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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