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

     minute |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        773        7.73        7.73
          1 |         81        0.81        8.54
          2 |         77        0.77        9.31
          3 |         82        0.82       10.13
          4 |         78        0.78       10.91
          5 |        427        4.27       15.18
          6 |         75        0.75       15.93
          7 |         64        0.64       16.57
          8 |         75        0.75       17.32
          9 |         69        0.69       18.01
         10 |        510        5.10       23.11
         11 |         54        0.54       23.65
         12 |        110        1.10       24.75
         13 |         61        0.61       25.36
         14 |         68        0.68       26.04
         15 |        576        5.76       31.80
         16 |         56        0.56       32.36
         17 |         68        0.68       33.04
         18 |        103        1.03       34.07
         19 |         69        0.69       34.76
         20 |        574        5.74       40.50
         21 |         57        0.57       41.07
         22 |         86        0.86       41.93
         23 |         77        0.77       42.70
         24 |         71        0.71       43.41
         25 |        439        4.39       47.80
         26 |         58        0.58       48.38
         27 |         62        0.62       49.00
         28 |         79        0.79       49.79
         29 |         74        0.74       50.53
         30 |        769        7.69       58.22
         31 |         52        0.52       58.74
         32 |         81        0.81       59.55
         33 |         63        0.63       60.18
         34 |         71        0.71       60.89
         35 |        393        3.93       64.82
         36 |         68        0.68       65.50
         37 |         79        0.79       66.29
         38 |         74        0.74       67.03
         39 |         82        0.82       67.85
         40 |        476        4.76       72.61
         41 |         68        0.68       73.29
         42 |        102        1.02       74.31
         43 |        105        1.05       75.36
         44 |         66        0.66       76.02
         45 |        539        5.39       81.41
         46 |         78        0.78       82.19
         47 |         63        0.63       82.82
         48 |         90        0.90       83.72
         49 |         70        0.70       84.42
         50 |        464        4.64       89.06
         51 |         60        0.60       89.66
         52 |         56        0.56       90.22
         53 |         64        0.64       90.86
         54 |         87        0.87       91.73
         55 |        394        3.94       95.67
         56 |         63        0.63       96.30
         57 |         87        0.87       97.17
         58 |        102        1.02       98.19
         59 |         70        0.70       98.89
         99 |        111        1.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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