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

    Time of |
Accident-Ho |
         ur |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        504        5.04        5.04
          1 |        511        5.11       10.15
          2 |        454        4.54       14.69
          3 |        265        2.65       17.34
          4 |        217        2.17       19.51
          5 |        260        2.60       22.11
          6 |        281        2.81       24.92
          7 |        287        2.87       27.79
          8 |        228        2.28       30.07
          9 |        211        2.11       32.18
         10 |        264        2.64       34.82
         11 |        295        2.95       37.77
         12 |        358        3.58       41.35
         13 |        354        3.54       44.89
         14 |        420        4.20       49.09
         15 |        507        5.07       54.16
         16 |        498        4.98       59.14
         17 |        549        5.49       64.63
         18 |        632        6.32       70.95
         19 |        602        6.02       76.97
         20 |        555        5.55       82.52
         21 |        604        6.04       88.56
         22 |        543        5.43       93.99
         23 |        500        5.00       98.99
         24 |          5        0.05       99.04
         99 |         96        0.96      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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