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

    Time of |
Accident-Mi |
       nute |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        903        9.03        9.03
          1 |         83        0.83        9.86
          2 |         55        0.55       10.41
          3 |         73        0.73       11.14
          4 |         57        0.57       11.71
          5 |        463        4.63       16.34
          6 |         47        0.47       16.81
          7 |         60        0.60       17.41
          8 |         84        0.84       18.25
          9 |         60        0.60       18.85
         10 |        544        5.44       24.29
         11 |         48        0.48       24.77
         12 |         71        0.71       25.48
         13 |         60        0.60       26.08
         14 |         54        0.54       26.62
         15 |        691        6.91       33.53
         16 |         49        0.49       34.02
         17 |         60        0.60       34.62
         18 |         75        0.75       35.37
         19 |         43        0.43       35.80
         20 |        586        5.86       41.66
         21 |         53        0.53       42.19
         22 |         52        0.52       42.71
         23 |         62        0.62       43.33
         24 |         61        0.61       43.94
         25 |        412        4.12       48.06
         26 |         55        0.55       48.61
         27 |         48        0.48       49.09
         28 |         67        0.67       49.76
         29 |         51        0.51       50.27
         30 |        882        8.82       59.09
         31 |         54        0.54       59.63
         32 |         48        0.48       60.11
         33 |         55        0.55       60.66
         34 |         54        0.54       61.20
         35 |        415        4.15       65.35
         36 |         53        0.53       65.88
         37 |         48        0.48       66.36
         38 |         69        0.69       67.05
         39 |         51        0.51       67.56
         40 |        488        4.88       72.44
         41 |         43        0.43       72.87
         42 |         56        0.56       73.43
         43 |         81        0.81       74.24
         44 |         43        0.43       74.67
         45 |        685        6.85       81.52
         46 |         50        0.50       82.02
         47 |         60        0.60       82.62
         48 |         64        0.64       83.26
         49 |         50        0.50       83.76
         50 |        589        5.89       89.65
         51 |         61        0.61       90.26
         52 |         61        0.61       90.87
         53 |         43        0.43       91.30
         54 |         53        0.53       91.83
         55 |        463        4.63       96.46
         56 |         53        0.53       96.99
         57 |         74        0.74       97.73
         58 |         86        0.86       98.59
         59 |         49        0.49       99.08
         99 |         92        0.92      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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