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

    Time of |
Accident-Ho |
         ur |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        473        4.73        4.73
          1 |        510        5.10        9.83
          2 |        478        4.78       14.61
          3 |        297        2.97       17.58
          4 |        218        2.18       19.76
          5 |        225        2.25       22.01
          6 |        250        2.50       24.51
          7 |        276        2.76       27.27
          8 |        228        2.28       29.55
          9 |        241        2.41       31.96
         10 |        267        2.67       34.63
         11 |        317        3.17       37.80
         12 |        302        3.02       40.82
         13 |        351        3.51       44.33
         14 |        452        4.52       48.85
         15 |        495        4.95       53.80
         16 |        511        5.11       58.91
         17 |        551        5.51       64.42
         18 |        631        6.31       70.73
         19 |        588        5.88       76.61
         20 |        589        5.89       82.50
         21 |        592        5.92       88.42
         22 |        536        5.36       93.78
         23 |        542        5.42       99.20
         24 |          9        0.09       99.29
         99 |         71        0.71      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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