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

    Time of |
Accident-Mi |
       nute |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        899        8.99        8.99
          1 |         69        0.69        9.68
          2 |         66        0.66       10.34
          3 |         60        0.60       10.94
          4 |         62        0.62       11.56
          5 |        453        4.53       16.09
          6 |         52        0.52       16.61
          7 |         54        0.54       17.15
          8 |         79        0.79       17.94
          9 |         48        0.48       18.42
         10 |        544        5.44       23.86
         11 |         51        0.51       24.37
         12 |         82        0.82       25.19
         13 |         60        0.60       25.79
         14 |         50        0.50       26.29
         15 |        710        7.10       33.39
         16 |         47        0.47       33.86
         17 |         56        0.56       34.42
         18 |         57        0.57       34.99
         19 |         45        0.45       35.44
         20 |        554        5.54       40.98
         21 |         40        0.40       41.38
         22 |         58        0.58       41.96
         23 |         58        0.58       42.54
         24 |         66        0.66       43.20
         25 |        471        4.71       47.91
         26 |         46        0.46       48.37
         27 |         52        0.52       48.89
         28 |         52        0.52       49.41
         29 |         40        0.40       49.81
         30 |        946        9.46       59.27
         31 |         56        0.56       59.83
         32 |         54        0.54       60.37
         33 |         52        0.52       60.89
         34 |         47        0.47       61.36
         35 |        380        3.80       65.16
         36 |         58        0.58       65.74
         37 |         52        0.52       66.26
         38 |         57        0.57       66.83
         39 |         41        0.41       67.24
         40 |        523        5.23       72.47
         41 |         50        0.50       72.97
         42 |         59        0.59       73.56
         43 |         65        0.65       74.21
         44 |         66        0.66       74.87
         45 |        698        6.98       81.85
         46 |         35        0.35       82.20
         47 |         56        0.56       82.76
         48 |         73        0.73       83.49
         49 |         36        0.36       83.85
         50 |        613        6.13       89.98
         51 |         57        0.57       90.55
         52 |         60        0.60       91.15
         53 |         64        0.64       91.79
         54 |         39        0.39       92.18
         55 |        447        4.47       96.65
         56 |         67        0.67       97.32
         57 |         60        0.60       97.92
         58 |         65        0.65       98.57
         59 |         49        0.49       99.06
         99 |         94        0.94      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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