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

    Time of |
Accident-Ho |
         ur |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        539        5.39        5.39
          1 |        507        5.07       10.46
          2 |        391        3.91       14.37
          3 |        218        2.18       16.55
          4 |        174        1.74       18.29
          5 |        193        1.93       20.22
          6 |        239        2.39       22.61
          7 |        267        2.67       25.28
          8 |        169        1.69       26.97
          9 |        279        2.79       29.76
         10 |        283        2.83       32.59
         11 |        364        3.64       36.23
         12 |        350        3.50       39.73
         13 |        358        3.58       43.31
         14 |        458        4.58       47.89
         15 |        442        4.42       52.31
         16 |        587        5.87       58.18
         17 |        592        5.92       64.10
         18 |        755        7.55       71.65
         19 |        631        6.31       77.96
         20 |        526        5.26       83.22
         21 |        537        5.37       88.59
         22 |        543        5.43       94.02
         23 |        580        5.80       99.82
         24 |         10        0.10       99.92
         99 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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